@article{ZicheRiekRussetal.2021, author = {Ziche, Daniel and Riek, Winfried and Russ, Alexander and Hentschel, Rainer and Martin, Jan}, title = {Water Budgets of Managed Forests in Northeast Germany under Climate Change - Results from a Model Study on Forest Monitoring Sites}, series = {Applied Sciences}, volume = {11}, journal = {Applied Sciences}, number = {5}, publisher = {MDPI}, issn = {2076-3417}, doi = {10.3390/app11052403}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2470}, pages = {18}, year = {2021}, abstract = {To develop measures to reduce the vulnerability of forests to drought, it is necessary to estimate specific water balances in sites and to estimate their development with climate change scenarios. We quantified the water balance of seven forest monitoring sites in northeast Germany for the historical time period 1961-2019, and for climate change projections for the time period 2010-2100. We used the LWF-BROOK90 hydrological model forced with historical data, and bias-adjusted data from two models of the fifth phase of the Coupled Model Intercomparison Project (CMIP5) downscaled with regional climate models under the representative concentration pathways (RCPs) 2.6 and 8.5. Site-specific monitoring data were used to give a realistic model input and to calibrate and validate the model. The results revealed significant trends (evapotranspiration, dry days (actual/potential transpiration < 0.7)) toward drier conditions within the historical time period and demonstrate the extreme conditions of 2018 and 2019. Under RCP8.5, both models simulate an increase in evapotranspiration and dry days. The response of precipitation to climate change is ambiguous, with increasing precipitation with one model. Under RCP2.6, both models do not reveal an increase in drought in 2071-2100 compared to 1990-2019. The current temperature increase fits RCP8.5 simulations, suggesting that this scenario is more realistic than RCP2.6}, language = {en} } @article{BraunBitschHaering2021, author = {Braun, Charis Linda and Bitsch, Vera and H{\"a}ring, Anna Maria}, title = {Behind the scenes of a learning agri-food value chain: lessons from action research}, series = {Agriculture and Human Values}, volume = {39}, journal = {Agriculture and Human Values}, publisher = {Springer Science+Business Media B.V.}, issn = {1572-8366}, doi = {10.1007/s10460-021-10229-7}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2481}, pages = {119 -- 134}, year = {2021}, abstract = {The development of sustainable agri-food systems requires not only new academic knowledge, but also concrete social and organizational change in practice. This article reflects on the action research process that supported and explored the learning process in an emerging agri-food value chain in the Berlin-Brandenburg region in eastern Germany. The action research study involved value chain actors, academic researchers, and process facilitators in a learning network. By framing the network's learning and problem solving processes in concepts of organizational learning, lessons were drawn for researchers and value chain developers. The results underline the importance of process facilitation in a learning value chain to create a social space, in which the actors in the value chain can interact and find a common basis for collaboration. In the learning process, facilitators used an iterative design to consistently align learning activities with the needs of practitioners to ensure practical relevance. To establish new practices and partnerships, value chain actors challenged existing routines and developed new ideas and visions, while at the same time improving established practices within their organizations and along the entire value chain.}, language = {en} } @article{SchusterSpechtRieger2021, author = {Schuster, Rolf K. and Specht, Peter and Rieger, Siegfried}, title = {On the Helminth Fauna of the Muskrat (Ondatra zibethicus (Linnaeus, 1766)) in the Barnim District of Brandenburg State/Germany}, series = {Animals}, volume = {11}, journal = {Animals}, number = {8}, publisher = {MDPI}, issn = {2076-2615}, doi = {10.3390/ani11082444}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2496}, pages = {15}, year = {2021}, abstract = {The muskrat is a neozoon species that has occupied many countries of continental North Europe after its introduction from north America as fur animals. Due to its burrowing activity it damages river and canal banks and structures of flood control. For this reason, the eradication of this alien species is recommended. Muskrats are also of parasitological interest since they can act as suitable intermediate hosts for Echinococcus multilocularis. On the other hand, little is known on the other helminths that infect muskrats. A total of 130 muskrats of different age groups trapped in different habitats in the Barnim district of the Brandenburg state by a professional hunter were examined for parasites and seven trematodes (Echinostoma sp., Notocotylus noyeri, Plagiorchis elegans, Plagiorchis arvicolae, Psilosostoma simillimum, P. spiculigerum, Opisthorchis felineus and four larval cestode species (Hydatigera taeniaeformis, Taenia martis, Taenia polyacantha, Taenia crassiceps) were detected. Larval stages of E. multilocularis were not found. O. felineus was found for the first time in muskrats in Germany. All the named parasites were present in Europe prior to the introduction of muskrats. With a prevalence of 48.9\%, Strobilocercus fasciolaris, the larval stage of the cat tapeworm, H. taeniaeformis, was the most frequent parasite found in adult muskrats.}, language = {en} } @article{IbischDichteHamoretal.2021, author = {Ibisch, Pierre L. and Dichte, Angela and Hamor, Fedir D. and Holovko, Andrii and Pokynchereda, Vasyl F. and Ryback, Mykola P. and Shvediuk, Iuliia}, title = {About borders and limits: experiences with UNESCO Biosphere Reserves for transboundary cooperation in Ukraine and neighbouring countries}, series = {eco.mont - Journal on Protected Mountain Areas Research and Management}, volume = {13}, journal = {eco.mont - Journal on Protected Mountain Areas Research and Management}, publisher = {Verlag der {\"O}sterreichischen Akademie der Wissenschaften}, issn = {2073-1558}, doi = {10.1553/eco.mont-13-sis136}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2508}, pages = {136 -- 141}, year = {2021}, abstract = {In Eastern Europe, several UNESCO Biosphere Reserves (BRs) have been important promoters of transnational and transboundary nature conservation and sustainable development. Nevertheless, political and institutional barriers and scarcity of resources have hindered successful cross-border cooperation. The prospects for BRs in Eastern Europe are mixed, especially in relation to the challenges of ecosystem degradation and climate change, as well as socioeconomic and (geo)political crises. Based on our own experience of one and a half decades of growing cooperation between partners in Ukraine and Germany, we conclude that transnational cooperation between BRs and science is particularly rewarding and mutually beneficial.}, language = {en} } @article{SchillaciSchmidtMiranda2021, author = {Schillaci, Guido and Schmidt, Uwe and Miranda, Luis}, title = {Prediction Error-Driven Memory Consolidation for Continual Learning: On the Case of Adaptive Greenhouse Models}, series = {KI - K{\"u}nstliche Intelligenz}, volume = {35}, journal = {KI - K{\"u}nstliche Intelligenz}, publisher = {Springer}, issn = {1610-1987}, doi = {10.1007/s13218-020-00700-8}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2510}, pages = {71 -- 80}, year = {2021}, abstract = {This work presents an adaptive architecture that performs online learning and faces catastrophic forgetting issues by means of an episodic memory system and of prediction-error driven memory consolidation. In line with evidence from brain sciences, memories are retained depending on their congruence with the prior knowledge stored in the system. In this work, congruence is estimated in terms of prediction error resulting from a deep neural model. The proposed AI system is transferred onto an innovative application in the horticulture industry: the learning and transfer of greenhouse models. This work presents models trained on data recorded from research facilities and transferred to a production greenhouse.}, language = {en} } @article{deMiguelDiezTolosanaEstebanPurfuerstetal.2021, author = {de Miguel-D{\´i}ez, Felipe and Tolosana Esteban, Eduardo and Purf{\"u}rst, Thomas and Cremer, Tobias}, title = {Analysis of the Influence That Parameters Crookedness and Taper Have on Stack Volume by Using a 3D-Simulation Model of Wood Stacks}, series = {Forests}, volume = {12}, journal = {Forests}, number = {2}, publisher = {MDPI}, issn = {1999-4907}, doi = {10.3390/f12020238}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2527}, pages = {10}, year = {2021}, abstract = {The influence that parameters crookedness and taper have on the stack volume was analyzed by using a 3D-simulation model in this study. To do so, log length, diameters at the midpoint and both ends, crookedness, bark thickness, taper and ovality were measured in 1000 logs of Scots pine. From this database, several data sets with different proportions of crooked and tapered logs in stack as well as with different degrees of taper and crookedness were created and taken as basis to simulate the stacks and carry out the analysis. The results show how the variation of these parameters influences the stack volume and provide their volume variation grades. These rates of variation were compared with measurement guidelines of some countries and previous research works. In conclusion, the parameters crookedness and taper influence the stack volume to a considerable extent. Specifically, the stack volume is increased as the crookedness degree or the proportion of crooked logs increases. In contrast, the stack volume is reduced as the taper degree or the proportion of tapered logs increases. Furthermore, the results demonstrate the capability of this simulation model to provide accurate results which can serve as a basis for future studies.}, language = {en} } @article{BussolaFalcoAukesetal.2021, author = {Bussola, Francesca and Falco, Enzo and Aukes, Ewert and Stegmaier, Peter and Sorge, Stefan and Ciolli, Marco and Gagliano, Caterina and Geneletti, Davide}, title = {Piloting a more inclusive governance innovation strategy for forest ecosystem services management in Primiero, Italy}, series = {Ecosystem Services}, volume = {52}, journal = {Ecosystem Services}, publisher = {Elsevier}, doi = {10.1016/j.ecoser.2021.101380}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2531}, pages = {17}, year = {2021}, abstract = {Forests are increasingly recognized for their role, importance and multifunctionality in terms of provisioning, regulating and cultural ecosystem services they provide. Even if timber production remains the most economically valuable provisioning service in Primiero, the importance of and need for multifunctionality of forests is acknowledged. This article analyses the development of Forest Ecosystem Services (FES) governance innovation strategies by the Provincial Forest Agency as a policy entrepreneur in the area of Primiero, in Trentino, northeast of Italy. Based on detailed case study material, we create the heuristic of Kingdon's three streams model in order to reconstruct the development of and negotiations around the introduction of innovative approaches to the problem, policy and politics levels and to identify the chosen or missed windows of opportunity to deliver innovation in FES management. Findings show that the main issues perceived by the local stakeholders concern loss of biodiversity, of cultural identity and historical landscape values. The policy-entrepreneurial initiatives undertaken by the Forest Agency represent a governance mix of direct project execution, financial incentives, organisational incentives and information-based activities. The results highlight its efforts to move beyond the traditional top-down approach based on widely available public funds and towards coordination and collaborations among stakeholders, contribution of private investments, bureaucracy simplification and interconnection between participatory and institutional processes.}, language = {en} } @article{TakovPilarskaLindeetal.2021, author = {Takov, Danail and Pilarska, Daniela and Linde, Andreas and Barta, Marek}, title = {Infectious and parasitic diseases of phytophagous insect pests in the context of extreme environmental conditions}, series = {Central European Forestry Journal}, volume = {67}, journal = {Central European Forestry Journal}, number = {2}, publisher = {Sciendo}, issn = {2454-0358}, doi = {10.2478/forj-2020-0018}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2541}, pages = {72 -- 84}, year = {2021}, abstract = {The density of phytophagous insect pest populations is related (directly and indirectly) to several groups of factors that can be broadly divided into: abiotic, biotic and anthropogenic. Each extreme in the abiotic environment at a macro-level leads to a series of consecutive extremes in the biotic environment, which eventually results in micro-level responses in the individual organisms. The manifestation of factors acts in aggregate or in a sequence, creating a chain of processes around us. Insects very efficiently use the abundance of nutritional resources, resulting in a tremendous increase in their population density, and triggering control mechanisms through the emergence of parasitic and pathogenic infections (viruses, bacteria, fungi, microsporidia, protozoa and nematodes). The development of entomopathogenic infections in host populations is directly dependent on the characteristics of both the antagonist and the insect. It is associated with the lifestyle and life cycle of the insect, with features encoded in the mechanism of pathogen action, and limited by the pathogen's virulence and pathogenicity.}, language = {en} } @article{SchmelzleBrunsBeckmannetal.2021, author = {Schmelzle, Sebastian and Bruns, Stefan and Beckmann, Felix and Moosmann, Julian and Lautner, Silke}, title = {Using In Situ Synchrotron-Radiation-Based Microtomography to Investigate 3D Structure-Dependent Material Properties of Tension Wood}, series = {Advanced Engineering Materials}, volume = {23}, journal = {Advanced Engineering Materials}, number = {11}, publisher = {Wiley}, issn = {1438-1656}, doi = {10.1002/adem.202100235}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-1925}, pages = {1 -- 11}, year = {2021}, abstract = {Synchrotron-radiation-based microtomography enables the 3D analysis of biological samples in situ beyond simple visualization, providing accurate measurements and recording of temporal data. The microtomography end station at P05 (PETRA III, Hamburg, Germany), operated by the Helmholtz Zentrum Hereon, can accommodate complex sample environments such as a load frame for mechanical testing. Herein, the strain analysis of a volumetric time series dataset of small hardwood samples is presented. For this in situ mechanical testing, the load frame is operated in tensile mode, and the biogenic material samples are subdivided into those specialized for tensile forces and those of regular anatomical structure. Digital volume correlation analysis allows for the prediction of strain development at any position in the sample. The tissue specialized for tensile strength can align dislocations formed under tension such that the deformation is stronger and more ordered. The results show how high-resolution imaging of sequential loading and the subsequent localization of strain can reveal functional morphological relationships. These methods can be extended to other biological materials and may prove to be extremely relevant for the analyses of fibrous and/or layered composite materials.}, language = {en} } @article{SchaeferJagerSchwarzetal.2021, author = {Sch{\"a}fer, Jesco and Jager, Christopher and Schwarz, Ulrich and Winkler, Christoph}, title = {Improving the usability of piezoresistive bond lines in wood by using impedance measurements}, series = {Wood Science and Technology}, volume = {55}, journal = {Wood Science and Technology}, number = {4}, publisher = {Springer Nature}, issn = {0043-7719}, doi = {10.1007/s00226-021-01311-8}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-1942}, pages = {937 -- 954}, year = {2021}, abstract = {Various studies on wood adhesives filled with conductive fillers for future application to structural monitoring showed a piezoresistive (resistance change with strain) response of the adhesive bond lines that is measurable under direct current. The results also showed a relatively high signal noise with low sensitivity. Using impedance spectroscopy as a measurement technique, the improvements in frequency-dependent piezoresistivity over DC (Direct Current) resistography of multifunctional bonded wood were studied. Beech specimens were bonded by one-component polyurethane prepolymer (1C-PUR) filled with carbon black and tested under shear load. The quality of the piezoresistive properties was described by calculating the signal-to-noise ratio (SNR) of the measured signal. A setup-specific frequency band with optimized SNR between 100 kHz and 1 MHz could be derived from the measurements. Several frequencies showed a signal with higher quality resulting in a higher SNR. Regardless of the variations in impedance spectra for all specimens, this frequency band provided several frequencies with improved signal quality. These frequencies give a more reliable signal with lower noise compared to the signal from DC resistography.}, language = {en} } @article{WinklerHaaseSchwarzetal.2021, author = {Winkler, Christoph and Haase, Stefan and Schwarz, Ulrich and Jahreis, Markus}, title = {Piezoresistive bond lines for timber construction monitoring—experimental scale-up}, series = {Wood Science and Technology}, volume = {55}, journal = {Wood Science and Technology}, number = {4}, publisher = {Springer Nature}, issn = {0043-7719}, doi = {10.1007/s00226-021-01305-6}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-1959}, pages = {1379 -- 1400}, year = {2021}, abstract = {Several laboratory studies and experiments have demonstrated the usability of polymer films filled with electrically conductive filler as piezoresistive material. Applied to adhesives, the glue lines of wood products can achieve multifunctional—thus bonding and piezoresistive/strain sensing—properties. Based on critical load areas in timber constructions, upscaled test setups for simplified load situations were designed, especially with regard to a stress-free electrical contact. In a second step, another upscaling was done to small glulam beams. Based on an experimental test sequence, the piezoresistive reactions as well as the behaviour until failure were analysed. The results show in all cases that a piezoresistive reaction of the multifunctionally bonded specimens was measurable, giving a difference in the extent of relative change. Additionally, measured phenomena like inverse piezoresistive reactions, electrical resistance drift and the absence of a piezoresistive reaction were discussed, based on additional strain analysis by digital image correlation. A model of macroscopic and microscopic strains influencing the piezoresistive reaction of the electrically conductive bond line in wood was used to explain all experimental results. Finally, a first scale-up of piezoresistive bond lines from laboratory samples to glulam beams was possible and successful.}, language = {en} } @article{GillichMichlerStolteretal.2021, author = {Gillich, Benjamin and Michler, Frank-Uwe and Stolter, Caroline and Rieger, Siegfried}, title = {Differences in social-space-time behaviour of two red deer herds (Cervus elaphus)}, series = {acta ethologica}, volume = {24}, journal = {acta ethologica}, number = {3}, publisher = {Springer Nature}, issn = {0873-9749}, doi = {10.1007/s10211-021-00375-w}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-1962}, pages = {185 -- 195}, year = {2021}, abstract = {Social-space-time-behaviour has developed very differently (e.g. a, loner, a herd, a pack) in the animal kingdom and depends on many different factors, like food availability, competition, predator avoidance or disturbances. It is known, that red deer are differently distributed in human disturbed areas compared to areas with less anthropogenic influences. But knowledge about the potential influence of human presence on social associations and interactions is rare, albeit differences may result in changing impacts on the environment, such as habitat utilization and feeding damage. Therefore, we investigated differences in the space use and social association of red deer. We studied two radio-collared herds of non-migratory populations in two study areas, which were comparable in landscape structure and vegetation structure, but differed in accessibility for visitors and the extent of their presence. Between the two study sites we compared the home range size, the differences in the extent of home range overlap within each study site and the space-time association (Jacobs Index) of individuals. Additionally, we present data on seasonal variations of home range sizes and social association all year round. In order to compare human activity in the study sites, we used the data from our long-term camera trap monitoring. The herd in the area with more human activity had significantly smaller home ranges and had greater year-round social associations in almost all seasons, except summer. We assume that smaller home ranges and higher association between animals may result in a higher feeding pressure on plants and a patchier utilization in areas with higher disturbances.}, language = {en} } @article{BerendtPegelBlaskoetal.2021, author = {Berendt, Ferr{\´e}ol and Pegel, Erik and Blasko, Lubomir and Cremer, Tobias}, title = {Bark proportion of Scots pine industrial wood}, series = {European Journal of Wood and Wood Products}, volume = {79}, journal = {European Journal of Wood and Wood Products}, number = {3}, publisher = {Springer Nature}, issn = {0018-3768}, doi = {10.1007/s00107-021-01657-7}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-1975}, pages = {749 -- 752}, year = {2021}, abstract = {Bark characteristics are not only used in the forest-wood supply chain, for example to calculate standing volumes, but also to transform wood volumes and masses. In this study, bark thickness, bark volume and bark mass were analyzed on the basis of 150 Scots pine discs, with a mean diameter of 13 cm. The mean double bark thickness was 3.02 mm, the mean bark volume proportion was 5.6\% and mean bark mass proportion was 3.3\%. Bark proportions were significantly affected by the log-specific variables 'diameter over bark', 'proportion of bark damage' and 'double bark thickness'.}, language = {en} } @article{BerendtdeMiguelDiezWalloretal.2021, author = {Berendt, Ferr{\´e}ol and de Miguel-Diez, Felipe and Wallor, Evelyn and Blasko, Lubomir and Cremer, Tobias}, title = {Comparison of different approaches to estimate bark volume of industrial wood at disc and log scale}, series = {Scientific Reports}, volume = {11}, journal = {Scientific Reports}, publisher = {Springer Nature}, issn = {2045-2322}, doi = {10.1038/s41598-021-95188-z}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-1987}, pages = {8}, year = {2021}, abstract = {Within the wood supply chain, the measurement of roundwood plays a key role due to its high economic impact. While wood industry mainly processes the solid wood, the bark mostly remains as an industrial by-product. In Central Europe, it is common that the wood is sold over bark but that the price is calculated on a timber volume under bark. However, logs are often measured as stacks and, thus, the volume includes not only the solid wood content but also the bark portion. Mostly, the deduction factors used to estimate the solid wood content are based on bark thickness. The aim of this study was to compare the estimation of bark volume from scaling formulae with the real bark volume, obtained by xylometric technique. Moreover, the measurements were performed using logs under practice conditions and using discs under laboratory conditions. The mean bark volume was 6.9 dm3 and 26.4 cm3 for the Norway spruce logs and the Scots pine discs respectively. Whereas the results showed good performances regarding the root mean square error, the coefficient of determination (R2) and the mean absolute error for the volume estimation of the total volume of discs and logs (over bark), the performances were much lower for the bark volume estimations only.}, language = {en} } @article{BlumroederMayHaerdtleetal.2021, author = {Blumr{\"o}der, Jeanette Silvin and May, Felix and H{\"a}rdtle, Werner and Ibisch, Pierre L.}, title = {Forestry contributed to warming of forest ecosystems in northern Germany during the extreme summers of 2018 and 2019}, series = {Ecological Solutions and Evidence}, volume = {2}, journal = {Ecological Solutions and Evidence}, number = {3}, publisher = {Wiley}, issn = {2688-8319}, doi = {10.1002/2688-8319.12087}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-1992}, pages = {14}, year = {2021}, abstract = {1. Forest management influences a variety of ecosystem structures and processes relevant to meso- and microclimatic regulation, but little research has been done on how forest management can mitigate the negative effects of climate change on forest ecosystems. 2. We studied the temperature regulation capacity during the two Central European extreme summers in 2018 and 2019 in Scots pine plantations and European beech forests with different management-related structural characteristics. 3. We found that the maximum temperature was higher when more trees were cut and canopy was more open. Logging 100 trees per hectare increased maximum temperature by 0.21-0.34 K at ground level and by 0.09-0.17 K in 1.3 m above ground. Opening the forest canopy by 10\% significantly increased Tmax, measured 1.3 m above ground by 0.46 K (including pine and beech stands) and 0.35 K (only pine stands). At ground level, Tmax increased by 0.53 K for the model including pine and beech stands and by 0.41 K in pure pine stands. Relative temperature cooling capacity decreased with increasing wood harvest activities, with below average values in 2018 (and 2019) when more than 656 (and 867) trees per hectare were felled. In the pine forests studied, the relative temperature buffering capacity 1.3 m above ground was lower than average values for all sample plots when canopy cover was below 82\%. In both study years, mean maximum temperature measured at ground level and in 1.3 m was highest in a pine-dominated sample plots with relatively low stand volume (177 m3 ha-1) and 9 K lower in a sample plot with relatively high stock volumes of Fagus sylvatica (>565 m3 ha-1). During the hottest day in 2019, the difference in temperature peaks was more than 13 K for pine-dominated sample plots with relatively dense (72\%) and low (46\%) canopy cover. 4. Structural forest characteristics influenced by forest management significantly affect microclimatic conditions and therefore ecosystem vulnerability to climate change. We advocate keeping the canopy as dense as possible (at least 80\%) by maintaining sufficient overgrowth and by supporting deciduous trees that provide effective shade.}, language = {en} } @article{BerendtWolfgrammCremer2021, author = {Berendt, Ferr{\´e}ol and Wolfgramm, Felix and Cremer, Tobias}, title = {Reliability of photo-optical measurements of log stack gross volume}, series = {Silva Fennica}, volume = {55}, journal = {Silva Fennica}, number = {3}, issn = {2242-4075}, doi = {10.14214/sf.10555}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2003}, pages = {1 -- 13}, year = {2021}, abstract = {In terms of assessing economic impact, one of the most important elements in the wood supply chain is the measurement of round wood. Besides the one-by-one measurement of logs, logs are often measured when stacked at the forest road. The gross stacked volume includes the volume of the wood, bark and airspace and is widely used for industrial wood assortments. The increasing international attention given to photo-optical measurement systems for portable devices is due to their simplicity of use and efficiency. The aim of this study was to compare the gross volumes of hardwood log stacks measured using one widespread photo-optical app with two manual section-wise volume estimations of log stacks based on the German framework agreement for timber trade (RVR). The manual volume estimations were done starting from the left (RVRleft) and right (RVRright) sides of the log stacks. The results showed an average deviation of the photo-optical gross volume estimation in comparison to the manual estimation of -2.09\% (RVRleft) and -3.66\% (RVRright) while the deviation between RVRleft and RVRright was +2.54\%. However, the log stack gross volume had a highly significant effect on the deviation and better accuracy with smaller deviation were reached for larger log stacks. Moreover, results indicated that the gross volume estimations of higher quality log stacks were closer for the three analyzed methods compared to estimations of poor-quality log stacks.}, language = {en} } @techreport{CremerBerendtdeMiguelDiezetal.2020, type = {Working Paper}, author = {Cremer, Tobias and Berendt, Ferr{\´e}ol and de Miguel Diez, Felipe and Wolfgramm, Felix and Blasko, Lubomir}, title = {Accuracy of Photo-Optical Measurement of Wood Piles}, series = {Environmental Sciences Proceedings}, journal = {Environmental Sciences Proceedings}, number = {3(1)}, publisher = {MDPI}, issn = {2673-4931}, doi = {10.3390/IECF2020-08192}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2012}, pages = {4}, year = {2020}, abstract = {The accurate estimation of timber volume is of the utmost importance. For industrial timber, the volume is often estimated as stacked cubic meters. In addition to manual measurements, volume estimation is possible with photo-optical systems. Over 100 piles of industrial timber of broadleaved tree species were analyzed. In the study, a standard manual measurement method for the estimation of wood pile volumes was compared with a smartphone based photo-optical application for the determination of woodpile volume. Mean gross volume of the piles was approximately 56 m3 and mean width of piles was 9.43 m. A strong correlation was found between the manual measurements and the photo-optical measurement. However, volume estimation of large volume piles seems to perform better in comparison to piles with small volumes. Further research is needed to determine the effects of variables such as log quality or quality of pile on volume estimation accuracy.}, language = {en} } @article{BerendtTolosanaHoffmannetal.2020, author = {Berendt, Ferr{\´e}ol and Tolosana, Eduardo and Hoffmann, Stephan and Alonso, Paula and Schweier, Janine}, title = {Harvester Productivity in Inclined Terrain with Extended Machine Operating Trail Intervals: A German Case Study Comparison of Standing and Bunched Trees}, series = {Sustainability}, volume = {12}, journal = {Sustainability}, number = {21}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su12219168}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2022}, pages = {10}, year = {2020}, abstract = {The complexity of highly structured forests with multiple tree species, especially when coniferous and broadleaved tree species are mixed, as well as stands with extended machine operating trail spacing and inclined terrain, create challenging operational conditions for mechanized timber harvesting and extraction. Motor-manually felling trees within the midfield and bunching them at the machine operating trails, prior to the arrival of a harvester-forwarder system, is a complex operation. The aim of this study was to assess and compare tethered harvester productivities of a thinning operation, for felling and processing standing trees and for processing bunched trees, through a time study in forest stands with 40-m distances between machine operating trails. Total operational costs of the analyzed thinning operation were 69 €/m3o.b., including extraction using a multiple forwarder approach. Tree species, merchantable timber volume, and whether the trees were standing or presented as bunched logs all had a significant effect on the harvester time consumption. Moreover, harvester positioning time was significantly shorter when trees were already bunched at the machine operating trail. While the productivity of standing or bunched spruce trees did not differ significantly between the cases (approximately 18 m3o.b./productive machine hours excluding all delays (PMH0)), the productivity of standing broadleaved tree species (8.3 m3o.b./PMH0) was much lower than that of bunched trees (15.5 m3o.b./PMH0). Thus, the described timber harvesting and extraction system may be a valuable option for forest stands with high proportion of broadleaved trees.}, language = {en} } @article{MartensOeztuerkRindtetal.2022, author = {Martens, D{\"o}rte and {\"O}zt{\"u}rk, {\"O}yk{\"u}m and Rindt, Lara and Twarok, Jana and Steinhardt, Uta and Molitor, Heike}, title = {Supporting biodiversity: Structures of participatory actions in urban green spaces}, series = {Frontiers in Sustainable Cities}, volume = {4}, journal = {Frontiers in Sustainable Cities}, publisher = {Frontiers Media S.A.}, issn = {2624-9634}, doi = {10.3389/frsc.2022.952790}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3636}, pages = {13}, year = {2022}, abstract = {Biodiversity loss is an important topic considering climate change, global warming, and even the reasoning of current and future animal-related diseases, such as the COVID-19 pandemic. Urban biodiversity is also important because of the ecosystem services they provide, restorative benefits for well-being, and physical health of the people who live in urban areas. Each city has its own strategies to cope with this issue, and these strategies do not function without the contribution of habitants of the cities. We developed an index (BBS) of the existing possibilities to support urban biodiversity in Berlin to measure the awareness and willingness of the Berliners to participate and support urban biodiversity. A survey was conducted in a face-to-face situation in four districts of Berlin with 431 urban residents, measuring preference for three different levels of biodiversity, connectedness to residential greenspace, neighborhood and city, nature relatedness, and willingness in participatory actions around greenspace. The results show that the high biodiversity condition in a photo scenario was preferred by most residents, indicating the appreciation for urban biodiversity. The connectedness to the residential greenspace was high (and higher than the connectedness to neighborhood and city), showing large potential for quality of life. While the overall willingness to participate in actions to support urban greenspace was rather high, our index shows substantial differences in activities, which are perceived more or less. This is a key result for urban park management to increase urban biodiversity participation processes.}, language = {en} } @article{RoqueMacandzaZelleretal., author = {Roque, Dion{\´i}sio Virg{\´i}lio and Macandza, Val{\´e}rio Ant{\´o}nio and Zeller, Ulrich and Starik, Nicole and G{\"o}ttert, Thomas}, title = {Historical and current distribution and movement patterns of large herbivores in the Limpopo National Park, Mozambique}, series = {Frontiers in Ecology and Evolution}, volume = {10}, journal = {Frontiers in Ecology and Evolution}, publisher = {Frontiers Media S.A.}, issn = {2296-701X}, doi = {10.3389/fevo.2022.978397}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3641}, abstract = {This study provides a first attempt to describe the historical distribution and movement patterns of selected large herbivore (LH) species in Limpopo National Park (LNP), an area in Mozambique today connected to a network of transboundary conservation areas. Between 1976 and the early 2000s, most LH species were absent in this area following the civil war in Mozambique followed by intense poaching due to weak law enforcement capacity. Through the reconstruction of the historical and current distribution and movement patterns of seven LH species in five periods, we investigate possible changes in distribution and movement patterns over time. Data collection is based on a systematic literature search, censuses reports, online databases, dung count transects, and camera trap surveys. We mapped all LH observations and movements using ArcGIS 10.1. Our results reveal a dramatic collapse of LH populations between the peak of the colonial period and the post-colonial/civil war period (1800-2001), followed by a slight recovery from the post-proclamation of Great Limpopo Transfrontier Park to the current period (2002-2021). While LH population decline applied to all seven species, there are species-specific differences in the process of restoration: African elephant (Loxodonta africana), African buffalo (Syncerus caffer), and plains zebra (Equus quagga) appear to recover to a greater extent than giraffe (Giraffa camelopardalis), eland (Tragelaphus oryx), blue wildebeest (Connochaetes taurinus), and white rhino (Ceratotherium simum). We found evidence of the functioning of proposed wildlife corridors in the LNP. The results give reason to assume that restoration of populations of LH is still in a very early and vulnerable state and that further efforts are necessary to strengthen the slowly increasing populations of LH. Our results highlight the importance of combining past and current data as a guide for the restoration of threatened species in African savannas impacted by human activities.}, language = {en} } @article{PerkovićPaulVasićetal.2022, author = {Perković, Stanislava and Paul, Carsten and Vasić, Filip and Helming, Katharina}, title = {Human Health and Soil Health Risks from Heavy Metals, Micro(nano)plastics, and Antibiotic Resistant Bacteria in Agricultural Soils}, series = {Agronomy}, volume = {12}, journal = {Agronomy}, number = {12}, publisher = {MDPI}, issn = {2073-4395}, doi = {10.3390/agronomy12122945}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3739}, year = {2022}, abstract = {Humans are exposed to agricultural soils through inhalation, dermal contact, or the consumption of food. Human health may be at risk when soils are contaminated; while some soil contaminants such as heavy metals (HMs) have been extensively studied, others such as micro(nano)plastics (MNPs) or antibiotic-resistant bacteria (ARB) pose novel threats. This paper investigates the linkages between soil contamination and human health risk by reviewing the state of knowledge on HMs, MNPs, and ARB in agricultural soils. A keyword-based search in Web of Science, Scopus, and Google Scholar was conducted, complemented with a backward snowball search. We analysed main sources of contamination for agricultural soils, risks to human health differentiated by uptake pathway (ingestion, inhalation, dermal), and interactions of contaminants with microorganism, soil fauna, and plants. Results show that the emergence and spread of ARB and antibiotic resistant genes from agricultural soils and their contribution to antibiotic resistances of human pathogens is recognized as a significant threat. Likewise, a growing body of evidence indicates that MNPs are able to enter the food chain and to have potentially harmful effects on human health. For HM, knowledge of the effects on human health is well established. Multiple agricultural practices increase HM concentrations in soils, which may lead to adverse health effects from the ingestion of contaminated products or inhalation of contaminated soil particles. Severe knowledge gaps exist about the pathways of the contaminants, their behaviour in soil, and human uptake. Little is known about long-term exposure and impacts of MNPs, antibiotics and ARB on human health or about the possible combined effects of MNPs, ARB, and HMs. Missing monitoring systems inhibit a comprehensive assessment of human health risks. Our research demonstrates the need for human health risk assessment in the context of agricultural soils, in particular to be able to assess risks related to measures reinforcing the concept of the circular economy.}, language = {en} } @article{LorenzGersterWodzinowskietal.2022, author = {Lorenz, Tommy and Gerster, Lea and Wodzinowski, Dustin Elias and Wartenberg, Ariani and Martetschl{\"a}ger, Lea and Molitor, Heike and Cremer, Tobias and Bloch, Ralf}, title = {Innovative Teaching and Learning Formats for the Implementation of Agroforestry Systems—An Impact Analysis after Five Years of Experience with the Real-World Laboratory "Ackerbaum"}, series = {Forests}, volume = {13}, journal = {Forests}, number = {7}, publisher = {MDPI}, issn = {1999-4907}, doi = {10.3390/f13071064}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3092}, pages = {14}, year = {2022}, abstract = {Since 2017, the Eberswalde University for Sustainable Development (HNEE) offers transformative learning modules in their curricula, which are called ITL—Innovative Teaching and Learning formats. Student tutors change into the role of teachers and organize lectures, excursions, and assignments at the Real-World Laboratory "Ackerbaum"—an agroforestry system in the federal state of Brandenburg, Germany. Students can learn about agroforestry systems, participate in research, and take practical action. The examination of the module is a scientific report linked to the experimental area. In this study, an attempt was made to verify the quality and impact of teaching formats in the ITL via the analysis of 53 reports created by 170 students as well as surveys among participants. For this purpose, indicators were formulated that capture the quality of scientific methods and the contribution to higher education for sustainable development. Students and tutors appreciate the open working atmosphere and the possibility to actively participate in the course; many leave the module motivated. Some even move toward transformation in agriculture professionally as, e.g., consultants in the field of agroforestry. As a transformative institution, HNEE offers with ITL a rare opportunity for practical application, scientific methods, and transdisciplinary collaboration with different stakeholders to work on future models to change today's agriculture.}, language = {en} } @article{ThevsAlievEmilevaetal.2022, author = {Thevs, Niels and Aliev, Kumar and Emileva, Begayim and Yuldasheva, Dilfuza and Eshchanova, Guzal and Welp, Martin}, title = {Potential of Agroforestry to Provide Wood Resources to Central Asia}, series = {Forests}, volume = {13}, journal = {Forests}, number = {8}, publisher = {MDPI}, issn = {1999-4907}, doi = {10.3390/f13081193}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3104}, pages = {14}, year = {2022}, abstract = {Background: Agroforestry systems have the potential to provide timber and wood as a domestic raw material, as well as an additional source of income for rural populations. In Central Asia, tree windbreaks from mainly poplar trees have a long tradition, but were largely cut down as source for fuel wood after the disintegration of the Soviet Union. As Central Asia is a forest-poor region, restoration of tree windbreaks has the potential to provide timber and wood resources to that region. This study aimed to assess the potential of tree windbreaks to contribute to domestic timber and wood production. Methods: This study rests on a GIS-based analysis, in which tree lines (simulated by line shape files) were intersected with cropland area. The tree data to calculate timber and wood volumes stem from a dataset with 728 single trees from a relevant range of climatic conditions. Results: The potential annually available timber volumes from tree windbreaks with 500 m spacing are 2.9 million m3 for Central Asia as a whole and 1.5 million m3 for Uzbekistan alone, which is 5 times the current domestic roundwood production and imports of the country. Conclusions: tree windbreaks offer untapped potential to deliver wood resources domestically as a raw material for wood-based value chains.}, language = {en} } @article{StarikGoettert2022, author = {Starik, Nicole and G{\"o}ttert, Thomas}, title = {Bats adjust echolocation and social call design as a response to urban environments}, series = {Frontiers in Ecology and Evolution}, volume = {10}, journal = {Frontiers in Ecology and Evolution}, publisher = {Frontiers Media S.A.}, issn = {2296-701X}, doi = {10.3389/fevo.2022.939408}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3140}, year = {2022}, abstract = {Behavioral traits play a major role in the successful adaptation of wildlife to urban conditions. We investigated and compared the acoustic behavior of free ranging bats in rural (Havelland, Brandenburg) and urban (Berlin city center) green areas (n = 6 sites) to assess possible effects of urbanization on bat vocalizations using automated real-time recordings from May to October 2020 and 2021. We show that foraging and social call activity of commonly occurring bat species was lower in urban areas compared to rural areas. We present data on rural-urban variation in acoustic parameters of echolocation and Type D social calls (produced during flight) using the example of the common pipistrelle Pipistrellus pipistrellus. Calls from urban sites revealed significantly higher end and peak frequencies compared to rural site calls. In addition, urban social calls present a higher degree of complexity as they structurally differed from rural social calls with regard to assemblage and number of call components. Moreover, urban social calls were emitted in a presumably different context than rural calls: antagonistic social calls in urban areas were detected throughout the year and in the acoustic absence of conspecifics and heterospecifics. Our results provide evidence for the ability of P. pipistrellus to modulate temporal and spectral features of echolocation and social calls, as well as patterns of social call production, in order to compensate for constraints imposed by the urban acoustic environment. We suggest that this acoustic behavioral plasticity plays a major role in the degree of adaptation of insectivorous bats to urban habitats.}, language = {en} } @article{KrauseSandersMundetal.2019, author = {Krause, Stuart and Sanders, Tanja G. M. and Mund, Jan-Peter and Greve, Klaus}, title = {UAV-Based Photogrammetric Tree Height Measurement for Intensive Forest Monitoring}, series = {Remote Sensing}, journal = {Remote Sensing}, number = {11(7)}, publisher = {MDPI}, issn = {2072-4292}, doi = {10.3390/rs11070758}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3240}, pages = {18}, year = {2019}, abstract = {The measurement of tree height has long been an important tree attribute for the purpose of calculating tree growth, volume, and biomass, which in turn deliver important ecological and economical information to decision makers. Tree height has traditionally been measured by indirect field-based techniques, however these methods are rarely contested. With recent advances in Unmanned Aerial Vehicle (UAV) remote sensing technologies, the possibility to acquire accurate tree heights semi-automatically has become a reality. In this study, photogrammetric and field-based tree height measurements of a Scots Pine stand were validated using destructive methods. The intensive forest monitoring site implemented for the study was configured with permanent ground control points (GCPs) measured with a Total Station (TS). Field-based tree height measurements resulted in a similar level of error to that of the photogrammetric measurements, with root mean square error (RMSE) values of 0.304 m (1.82\%) and 0.34 m (2.07\%), respectively (n = 34). A conflicting bias was, however, discovered where field measurements tended to overestimate tree heights and photogrammetric measurements were underestimated. The photogrammetric tree height measurements of all trees (n = 285) were validated against the field-based measurements and resulted in a RMSE of 0.479 m (2.78\%). Additionally, two separate photogrammetric tree height datasets were compared (n = 251), and a very low amount of error was observed with a RMSE of 0.138 m (0.79\%), suggesting a high potential for repeatability. This study shows that UAV photogrammetric tree height measurements are a viable option for intensive forest monitoring plots and that the possibility to acquire within-season tree growth measurements merits further study. Additionally, it was shown that negative and positive biases evident in field-based and UAV-based photogrammetric tree height measurements could potentially lead to misinterpretation of results when field-based measurements are used as validation.}, language = {en} } @article{OchoaSanyeMengualSpechtetal.2019, author = {Ochoa, Jesus and Sany{\´e}-Mengual, Esther and Specht, Kathrin and Fern{\´a}ndez, Juan A. and Ba{\~n}{\´o}n, Sebasti{\´a}n and Orsini, Francesco and Magrefi, Francesca and Bazzocchi, Giovanni and Halder, Severin and Martens, D{\"o}rte and Kappel, Noemi and Gianquinto, Giorgio}, title = {Sustainable Community Gardens Require Social Engagement and Training: A Users' Needs Analysis in Europe}, series = {Sustainability}, journal = {Sustainability}, number = {11(14)}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su11143978}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3261}, year = {2019}, abstract = {Urban gardens are spreading in many cities across Europe, with community gardening being a fundamental form of urban agriculture. While the literature reveals the essential role that community gardens can play in terms of learning and education, no studies have investigated the training needs for participants in community gardens to ensure their successful development. The goal of this article is to evaluate the training requirements of urban community gardens to ensure their successful implementation and their contribution to sustainability in European cities. Two questionnaires of users' needs analysis were designed and implemented in Berlin, Bologna, Budapest, and Cartagena. The results unveiled the need to re-enforce the training in the formation and community building phases of community gardens towards ensuring the creation of an engaged gardening community to maintain activity, particularly for top-down activities (e.g., research-related gardens). Users claimed their need for being trained on crop management skills (e.g., maintenance, bed preparation, organic practices) and on communication skills to further disseminate their activity, thereby increasing the potential for citizen engagement. Such requirements could be overcome with the creation of urban gardens networks, where experiences and knowledge are shared among practitioners. Policy recommendations are provided based on the outputs of this study.}, language = {en} } @article{SchultzGlemnitzStachowetal.2022, author = {Schultz, Alfred and Glemnitz, Michael and Stachow, Ulrich and Schwierz, Friederike}, title = {Changes in a Bird Community in an Agricultural Landscape in Northeast Germany between 1999 and 2015}, series = {Land}, volume = {11}, journal = {Land}, number = {12}, editor = {Petri{\c{s}}or, Alexandru-Ionuţ}, publisher = {MDPI}, issn = {2073-445X}, doi = {10.3390/land11122115}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3750}, year = {2022}, abstract = {Temporal changes in the bird community of an agricultural landscape in northeast Germany were analysed covering three different analytical foci (landscape-wide, habitat types, sample plots) and two aggregation levels of bird observation data (whole bird community, bird guilds). The analyses are based on a systematic data sampling over two multi-year campaigns (1999-2002; 2013-2015). Our analyses address the question of how changes in the occurrences of agricultural birds (numbers of species and of individuals) at local spots manifest themselves in the landscape as a whole. By summarizing all findings concerning single variables (number of species, observation frequencies, abundances, different habitat types, bird guilds), a dramatic, systematic decline of the bird community at sample plots was discovered between the campaigns, which is not yet recognisable across the whole landscape in terms of species richness. Furthermore, we found that landscape-wide, the birds' use of habitat changed; the variability between single sample plots increased strongly and most species occurred at fewer sample plots over the whole landscape. Obviously, sample plots with high bird occurrences are becoming more relevant for maintaining bird communities over the whole landscape. Bird community composition changed significantly within the observation period.}, language = {en} } @article{BlumroederSchmidtGordonetal.2022, author = {Blumr{\"o}der, Jeanette Silvin and Schmidt, Frederic and Gordon, Anat and Grosse, Stefanie and Ibisch, Pierre L.}, title = {Ecosystemic resilience of a temperate post-fire forest under extreme weather conditions}, series = {Frontiers in Forests and Global Change}, volume = {5}, journal = {Frontiers in Forests and Global Change}, number = {5}, publisher = {Frontiers Media S.A.}, issn = {2624-893X}, doi = {10.3389/ffgc.2022.1070958}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3825}, pages = {1 -- 16}, year = {2022}, abstract = {Introduction The effects of climate change are exacerbating the fire risk in forests worldwide. Conifer plantations in particular are especially vulnerable to fire outbreaks. At the end of the extraordinarily hot and dry summer of 2018, a forest pine plantation burned in Brandenburg, NE Germany. Different forestry interventions were carried out after the fire, while one area of the damaged plantation remained untouched. Methods We investigated the resilience of the forest ecosystem and the effectiveness of different active and passive forest restoration measures during the subsequent relatively warm and dry years 2019-2021. Results One year after the fire, Populus tremula showed strong spontaneous colonization at all sites. In contrast, the majority of planted Pinus sylvestris plantlets died on the plots that had been salvage-logged after the fire. Three years after the fire, Populus tremula successfully established itself as the dominant tree species on all plots, with the highest abundance on the plot where the overstorey of the dead pines was left. Betula pendula, Salix caprea, and Pinus sylvestris showed lower abundance, with their proportion increasing with decreasing cover by dead trees. The distribution of regrowing trees is very heterogeneous across the different treatments and plots. In the clear-cut plots, the extreme microclimatic conditions expose the young trees to additional heat and drought, while the retention of deadwood measurably buffers the temperature and water stress. Discussion The resilience and adaptability of naturally regenerating forests that develop into ecosystems that are more diverse seem more promising than restoration through intervention. Apart from hampering restoration under extreme weather conditions, post-fire salvage logging contributes to soil degradation and loss of organic carbon.}, language = {en} } @article{MunierFrankeHeroldetal.2020, author = {Munier, Leo Felix and Franke, Tom and Herold, Nadine and Pfriem, Alexander}, title = {Humidity's Effect on the Dynamic-mechanical Behavior of Phenol-formaldehyde Impregnated Beech Wood Veneer}, series = {BioResources}, journal = {BioResources}, number = {15(1)}, doi = {10.15376/biores.15.1.1563-1574}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3841}, pages = {1563 -- 1574}, year = {2020}, abstract = {The dynamic-mechanical behavior of phenol-formaldehyde-impregnated beech wood (Fagus sylvatica L.) veneers was evaluated at various relative humidities. The aim was to identify the plasticizing effects of moisture on phenol-formaldehyde-impregnated veneers. Thin beech veneer samples were impregnated with a low and a medium molecular weight phenol- formaldehyde resin. The measurements were performed with a dynamic- mechanical thermal analysis equipped with a humidity generator. The storage modulus and the loss factor of the uncured phenol-formaldehyde- impregnated and the untreated control veneers were determined at a relative humidity of 15\%, 60\%, and 85\% and a constant temperature of 25 °C. The untreated control veneers exhibited the smallest reduction of the normalized storage modulus. In contrast, the phenol-formaldehyde- impregnated samples exhibited a more intense relative reduction of the storage modulus with increasing relative humidity. This effect was more distinct for samples impregnated with low molecular weight phenol- formaldehyde than for those impregnated with medium molecular weight phenol-formaldehyde. In addition, higher solids contents in the resins led to even smaller normalized storage modulus. Consistently, the loss factor indicated a greater softening of the samples with an increasing humidity and higher solids content of the phenol-formaldehyde.}, language = {en} } @article{GoettertStarik2022, author = {G{\"o}ttert, Thomas and Starik, Nicole}, title = {Human-Wildlife Conflicts across Landscapes—General Applicability vs. Case Specificity}, series = {Diversity}, volume = {14}, journal = {Diversity}, number = {5}, publisher = {MDPI}, issn = {1424-2818}, doi = {10.3390/d14050380}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2828}, pages = {18}, year = {2022}, abstract = {Here, we address the question of if/to what extent human-wildlife conflict (HWC) can be reduced or mitigated by supra-regional or even global approaches, or whether case- and region-specific strategies are necessary. First, we try to shift the perspective from humans towards wildlife and regard modern era (near) extinctions of selected wildlife species as an ultimate expression of HWC. We then reflect on the legitimacy of ecosystem comparisons beyond the borders of biogeographical regions—an important prerequisite for global approaches. In the following, we present two case scenarios that exemplarily illustrate the topic from different perspectives: carnivore-livestock conflicts (classical view, human perspective) and wind turbine-induced mortality of bats (wildlife perspective, rarely regarded as a form of HWC). On this basis, we try to develop a framework that enables a global approach, while adequately considering case- and region-specificity. We think that a globally valid and generally approachable dimension can be defined, as long as there is a natural link: in the present case the established monophyly of the orders Carnivora and Chiroptera, i.e., representatives descending from common ancestors, thus sharing common ecological features. This natural relationship among all representatives of a systematic group (specification of the "wildlife" concept) is key for the development of an overarching strategy that can be adjusted to a specific case.}, language = {en} } @article{LauterbachBantle2022, author = {Lauterbach, Josephine and Bantle, Christina}, title = {"For More Diversity, Better Taste and My Own Health" Exploring Organic Consumers' Purchasing Motives for Heirloom Vegetable Varieties}, series = {Sustainability}, journal = {Sustainability}, number = {14(7)}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su14074068}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2992}, pages = {16}, year = {2022}, abstract = {Agrobiodiversity is the foundation of our ecosystems and food supply. However, agrobiodiversity is declining rapidly. A prominent strategy to safeguard endangered varieties, an important component of agrobiodiversity, is their cultivation and preservation in their natural environments. In order to make the cultivation of these varieties attractive to farmers, a functioning value chain and communication concepts for these goods have to be developed. Using heirloom vegetable varieties as an example, we examine existing communication approaches for endangered varieties and evaluate their suitability to transport their added value to organic consumers. We furthermore examine organic consumers' purchasing motives to buy heirloom vegetable varieties. We collected data in three focus group discussions in Berlin (Germany) in 2018. This exploratory study shows that existing communication approaches for heirloom vegetable varieties strongly appeal to altruistic and biospheric purchasing motives. However, our results suggest that egoistic and hedonic purchasing motives are just as important to organic consumers. Hence, existing communication approaches for heirloom vegetable varieties, including the "Red List of Endangered Local Crops", are not entirely suitable to communicate the added value of biodiversity-enhancing products to consumers. Based on these results, we will develop a holistic communication scheme for heirloom vegetable varieties for organic supermarkets and further distribution channels in Germany.}, language = {en} } @article{MannGohrBlumroederetal.2023, author = {Mann, Deepika and Gohr, Charlotte and Blumr{\"o}der, Jeanette Silvin and Ibisch, Pierre L.}, title = {Does fragmentation contribute to the forest crisis in Germany?}, series = {Frontiers in Forests and Global Change}, volume = {6}, journal = {Frontiers in Forests and Global Change}, publisher = {Frontiers Media S.A.}, issn = {2624-893X}, doi = {10.3389/ffgc.2023.1099460}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3909}, pages = {12}, year = {2023}, abstract = {Intact forests contribute to the ecosystem functionality of landscapes by storing and sequestering carbon, buffering and cooling the microclimate, and providing a range of related ecosystem functions. Forest fragmentation not only poses a threat to many organisms but also reduces the resistance and resilience of the ecosystem, which is especially relevant to the ongoing climate crisis. The effects of recent extreme heat years on forests in Germany have not been studied in detail for the influence of fragmentation. We investigate the relation of forest fragmentation with temperature and vitality in Germany per ecoregion at the canopy level using satellite imagery at 1-km and 30-m resolution. We compiled and correlated forest maps for connectivity based on Thiessen polygons, canopy temperatures on the hottest days based on land surface temperature, and forest vitality based on the maximum normalized difference vegetation index per growing season. We differentiated between ecoregions and main forest types. In 2022, larger intact tree-covered areas that are less fragmented have relatively low temperatures on hot days and higher overall vitality. Nearly 98\% of the almost 1.95 million forest fragments at 30-m resolution in Germany are smaller than 1 km2, which cover nearly 30\% of the total forest area. To counteract the forest crisis, forest and landscape management should aim to reduce fragmentation and maintain tree biomass and forest cover in the landscape. Increasing the size of continuous forest fragments contributes to ecosystem-based adaptation to climate change.}, language = {en} } @article{GoettertPerry2023, author = {G{\"o}ttert, Thomas and Perry, Gad}, title = {Going Wild in the City—Animal Feralization and Its Impacts on Biodiversity in Urban Environments}, series = {Animals}, volume = {13}, journal = {Animals}, number = {4}, editor = {Bakaloudis, Dimitrios}, publisher = {MDPI}, issn = {2076-2615}, doi = {10.3390/ani13040747}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3992}, year = {2023}, abstract = {Simple Summary Understanding the impact of urbanization on biodiversity is a crucial task of our time. Here, we reflect on the importance of feralization in the relationship between ongoing urbanization and the worsening biodiversity crisis. Feralization is often viewed as the exact opposite of a domestication process—a perception that we argue is too simplistic. The interrelations between domestication, feralization, and the adaptation of taxa to novel, human-made environments such as cities are complex. Given their unique traits, feral(izing) taxa can play key roles in sustainability, sometimes problematic (i.e., invasive species) but at other times, improving human well-being in urban settings. Abstract Domestication describes a range of changes to wild species as they are increasingly brought under human selection and husbandry. Feralization is the process whereby a species leaves the human sphere and undergoes increasing natural selection in a wild context, which may or may not be geographically adjacent to where the originator wild species evolved prior to domestication. Distinguishing between domestic, feral, and wild species can be difficult, since some populations of so-called "wild species" are at least partly descended from domesticated "populations" (e.g., junglefowl, European wild sheep) and because transitions in both directions are gradual rather than abrupt. In urban settings, prior selection for coexistence with humans provides particular benefit for a domestic organism that undergoes feralization. One risk is that such taxa can become invasive not just at the site of release/escape but far away. As humanity becomes increasingly urban and pristine environments rapidly diminish, we believe that feralized populations also hold conservation value.}, language = {en} } @article{LitschelBerendtWagneretal.2023, author = {Litschel, Johannes and Berendt, Ferr{\´e}ol and Wagner, Hanna and Heidenreich, Simon and Bauer, David and Welp, Martin and Cremer, Tobias}, title = {Key Actors' Perspectives on Agroforestry's Potential in North Eastern Germany}, series = {Land}, volume = {12}, journal = {Land}, number = {2}, publisher = {MDPI}, issn = {2073-445X}, doi = {10.3390/land12020458}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4003}, pages = {1 -- 19}, year = {2023}, abstract = {As a land use management system, agroforestry has environmental, economic and societal benefits over conventional agriculture or forestry. Important benefits of combining tree growth with agricultural crops and/or forage production systems include higher biodiversity through more diverse habitats, the control of runoff and soil erosion, the augmentation of soil water availability, the creation of microclimates, carbon sequestration and provision of a more diverse farm economy. As the climate changes, north eastern Germany is likely to be particularly prone to severe effects from droughts and wind erosion in the future. However, the area of land under agroforestry makes up less than 2\% of the total agricultural area in Germany. Through qualitative interviews with key actors, this study analyzed the benefits of, potentials for and barriers to implementing agroforestry systems in the federal state of Brandenburg. Results showed that agroforestry systems have significant potential in relation to several benefits, particularly the mitigation of soil erosion and stabilization of microclimate regimes. Additionally, agroforestry has the potential to provide wood for energy production or material uses. Although a small but highly innovative and interlinked community exists, administrative barriers and high start-up costs currently hamper the transition from conventional agriculture to agroforestry systems.}, language = {en} } @article{UllahSaqibKaechele2022, author = {Ullah, Ayat and Saqib, Shahab E. and K{\"a}chele, Harald}, title = {Determinants of Farmers' Awareness and Adoption of Extension Recommended Wheat Varieties in the Rainfed Areas of Pakistan}, series = {Sustainability}, volume = {14}, journal = {Sustainability}, number = {6}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su14063194}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3496}, pages = {18}, year = {2022}, abstract = {Scientific evidence suggests that there is room for eradicating poverty and hunger by increasing food production through the adoption of modern agricultural practices by farmers. This study aimed, first, to explore the relationship between the farmers' awareness and adoption of improved wheat varieties. Second, it aimed to find the key factors that govern the farmers' awareness and adoption of extension-recommended innovations in the rainfed cropping system of the Khyber Pakhtunkhwa, Pakistan. Data were collected from 395 respondents. A binary logit model was used to analyze the effect of the farmers' socioeconomic and farm-specific characteristics on their awareness and adoption of the extension-suggested wheat varieties. Moreover, qualitative data from 40 key informants were collected for in-depth analysis. The results show a strong association between the farmers' awareness of a technology (improved wheat varieties) and its adoption. The results of the logit model show that their extension contacts, income from agriculture, and access to credit positively affected the farmers' awareness, whereas their education and household sizes negatively affected their awareness. Moreover, the factors that positively influenced the farmers' decision to adopt the technology included the extension contact, the confidence in the extension, the risk-bearing attitude, and the credit access, whereas the household size and education negatively affected it. The results of the key informant interviews reveal that the high incidence of poverty, the low soil fertility, the farmers' inability to make effective decisions, the lack of accurate weather predictability in the rainfed farming system, the lack of government interest, and the asymmetric information in the inputs markets contributed to the farmers' low levels of awareness and to their poor adoption of improved agricultural technologies. These results indicate that any intervention aimed at the awareness and adoption by farmers of improved technologies, such as new wheat varieties, should recognize the heterogeneity in the farmers' socioeconomic and farm-specific characteristics.}, language = {en} } @article{MissallWelpMehtaetal.2022, author = {Missall, Siegmund and Welp, Martin and Mehta, Kedar and Degembaeva, Nadira and Akmatov, Kuban and Z{\"o}rner, Wilfried}, title = {In Search for the Optimal Forest Use Behaviour: Riparian Forest Use in Central Asia, Using the Example of Ak-Tal, Naryn, Kyrgyzstan}, series = {Forests}, volume = {13}, journal = {Forests}, number = {8}, publisher = {MDPI}, issn = {1999-4907}, doi = {10.3390/f13081254}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3508}, pages = {19}, year = {2022}, abstract = {Riparian forests are rare and valuable ecosystems in Central Asia, both due to their significance for biodiversity and to their provision of vital ecosystem services to local residents. However, the actual forest use behaviour is under-researched, official figures may not be trustworthy, and the question of over-use is up in the air. This paper sets out to shed light on riparian forest use behaviour by local residents using the example of Ak-Tal Village upon the Naryn River in Kyrgyzstan: Which economic use patterns do they practice (focusing on fuel wood and pasture)? Which other ecosystem services do they recognise? Is there forest over-exploitation? To answer these questions, this study builds on local knowledge, by applying the methods of focus group discussions and a household survey. Results show an extreme discrepancy between official wood consumption figures (50-60 m3 p.a.) and figures based on household wood consumption (310-404 m3 p.a.). The forest also serves as an important winter pasture over the seven months between October and April (stocking density 0.61 livestock units/ha), but payments for these ecosystem services are low, with annually 40 KGS/ha. Local residents are aware of additional material and nonmaterial ecosystem services of the riparian forest. Opinions diverge upon the question if there is forest over-exploitation, potentially because different stakeholders have different concepts of an optimal forest status. Consequently, optimal forest use behaviour can only be defined by the local users themselves, e.g., in a future stakeholder dialogue.}, language = {en} } @article{HamidovHelming2020, author = {Hamidov, Ahmad and Helming, Katharina}, title = {Sustainability Considerations in Water-Energy-Food Nexus Research in Irrigated Agriculture}, series = {Sustainability}, volume = {12}, journal = {Sustainability}, number = {15}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su12156274}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3381}, pages = {20}, year = {2020}, abstract = {Irrigated agriculture is essential to satisfying the globally increasing demand for food and bio-based products. Yet, in water scarce regions, water-use for irrigation aggravates the competition for the use of water for other purposes, such as energy production, drinking water and sanitation. Solutions for sustainable food production through irrigated agriculture require a systemic approach to assess benefits and trade-offs across sectors. Here, the water-energy-food (WEF) nexus has become an important concept in natural resource management. It has been conceptualized to analyze linkages and trade-offs between the three sectors, across temporal and spatial scales. However, the concept has so far mainly been conceptual, with little empirical evidence or proof of concept in real world cases. The objective of this paper was to take stock of the rapidly advancing literature on the WEF nexus in irrigated agriculture, and to analyze how the concept was actually implemented in research studies, and how the nexus between water, food and energy was actually dealt with. The study period ranges from 2011 to 2019, and includes 194 articles. Results showed that the WEF nexus is indeed very relevant in irrigated agriculture, and the respective literature makes up one third of all WEF nexus papers. Modeling and empirical research have caught up with conceptual synthesis studies during the last four years, thereby indicating that the WEF nexus concept is indeed increasingly operationalized. However, most studies addressed the WEF nexus from a perspective of either socioeconomic, technological or environmental categories, and they place one of the dimensions of water, food or energy into the foreground. To address sustainable development, there is a need to fully integrate across research disciplines and thematic dimensions. Such studies are only starting to emerge. These findings are an important evidence-base for future WEF nexus research on irrigated agriculture, in support of sustainable solutions for water scarce regions, especially in settings undergoing transformations.}, language = {en} } @article{MacPhersonPaulHelming2020, author = {MacPherson, Joseph and Paul, Carsten and Helming, Katharina}, title = {Linking Ecosystem Services and the SDGs to Farm-Level Assessment Tools and Models}, series = {Sustainability}, volume = {12}, journal = {Sustainability}, number = {16}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su12166617}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3395}, pages = {19}, year = {2020}, abstract = {A number of tools and models have been developed to assess farm-level sustainability. However, it is unclear how well they potentially incorporate ecosystem services (ES), or how they may contribute to attaining the United Nations Sustainable Development Goals (SDGs). Understanding how farm-level assessment tools and models converge on these new paradigms of sustainability is important for drawing comparison on sustainability performances of farming systems, conducting meta-analyses and upscaling local responses to global driving forces. In this study, a coverage analysis was performed for several farm-level sustainability assessment (SA) tools (SAFA, RISE, KSNL, DLG) and models (MODAM, MONICA, APSIM), in regard to their potential for incorporating ES and contribution to attaining the SDGs. Lists of agricultural-relevant CICES classes and SDG targets were compiled and matched against the indicators of the tools and models. The results showed that SAFA possessed the most comprehensive coverage of ES and SDGs, followed by RISE and KSNL. In comparison to models, SA tools were observed to have a higher degree of potential for covering ES and SDGs, which was attributed to larger and broader indicators sets. However, this study also suggested that, overall, current tools and models do not sufficiently articulate the concept of ecosystem services.}, language = {en} } @article{VasićPaulStraussetal.2020, author = {Vasić, Filip and Paul, Carsten and Strauss, Veronika and Helming, Katharina}, title = {Ecosystem Services of Kettle Holes in Agricultural Landscapes}, series = {Agronomy}, volume = {10}, journal = {Agronomy}, number = {9}, publisher = {MDPI}, issn = {2073-4395}, doi = {10.3390/agronomy10091326}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3407}, pages = {22}, year = {2020}, abstract = {Kettle holes are small water bodies of glacial origin which mostly occur in agricultural landscapes. They provide numerous ecosystem services (ES), but their supply may be negatively affected by agricultural management. We conducted a literature review to identify which ES are supplied by kettle holes and to analyze feedbacks with agricultural management. Taking Germany as a test case, we also analyzed how kettle holes are addressed in policy documents and for which ES they are regulated. This was done to identify the societal value officially associated with kettle holes. The literature review found eight ES attributed to kettle holes, of which hydrological cycle and flood control, chemical condition of freshwaters, nursery populations and habitats and biotic remediation of wastes were addressed most often. In contrast, only the provision of habitat service was addressed in German policy documents related to kettle holes. We identified types of agricultural management that negatively affected the supply of ES by kettle holes, in particular artificial drainage, high levels of pesticide and fertilizer application, and management where tillage and erosion result in elevated sediment inputs. Additionally, climate change may lead to an increased drying up of kettle holes. Based on our finding, we conclude that the intensity of agricultural management around kettle holes threatens the supply of all ES while only the service of providing habitats for biodiversity is addressed in German policy regulations. Further regulation is required to induce agricultural management change towards a conservation of all ES supplied by kettle holes.}, language = {en} } @article{UllahMahmoodZebetal.2020, author = {Ullah, Ayat and Mahmood, Nasir and Zeb, Alam and K{\"a}chele, Harald}, title = {Factors Determining Farmers' Access to and Sources of Credit: Evidence from the Rain-Fed Zone of Pakistan}, series = {Agriculture}, volume = {10}, journal = {Agriculture}, number = {12}, publisher = {MDPI}, issn = {2077-0472}, doi = {10.3390/agriculture10120586}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3419}, pages = {13}, year = {2020}, abstract = {This study investigates the factors that affect farmers' access to agricultural credit and its role in adopting improved agricultural technologies in the rain-fed zone of Khyber Pakhtunkhwa (KP), Pakistan. Using logistic models, we assess and compare the relative role of farmers' socioeconomic attributes in their access to credit and adoption strategies. The results indicate a moderate positive association between farmers' access to agricultural credit and their adoption of improved agricultural technologies. The binary logit model's results indicate that farmers with a large-sized farm, high farm income, better access to information, and large physical asset ownership showed a positive influence on credit access. However, farming experience showed a negative effect on farmers' access to agricultural credit. Regarding farmers' credit sources, this study found that asset-rich farmers with more farming experience and better access to information relied more on banks than on input providers and informal credit sources. Similarly, older farmers with more education, larger farm sizes and high farm income were more likely to have borrowed from input providers than banks. We conclude that the role of the effective provision of information on credit and agricultural technology is imperative and requires separate policies that are specifically aimed at different groups of farmers with different socioeconomic and farm-related characteristics.}, language = {en} } @article{RussRiekWessolek2021, author = {Russ, Alexander and Riek, Winfried and Wessolek, Gerd}, title = {Three-Dimensional Mapping of Forest Soil Carbon Stocks Using SCORPAN Modelling and Relative Depth Gradients in the North-Eastern Lowlands of Germany}, series = {Applied Sciences}, volume = {11}, journal = {Applied Sciences}, number = {2}, publisher = {MDPI}, issn = {2076-3417}, doi = {10.3390/app11020714}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3427}, pages = {28}, year = {2021}, abstract = {To cope with the challenges in forest management that are contemporarily caused by climate change, data on current chemical and physical soil properties are more and more necessary. For this purpose, we present a further amalgam of depth functions and SCORPAN modelling to provide data at arbitrary depth layers. In this concept, regionalisation is split up into the modelling of plot totals and the estimation of vertical distributions. The intended benefits by splitting up are: consistency between estimates on plot level and depth layer level, avoidance of artificial depth gradients, straightforward interpretation of covariates in the sense of pedogenetic processes, and circumnavigation of the propagation of uncertainties associated with separation between horizons during field sampling. The methodology was tailored to the circumstances within the north-eastern lowlands and the utilisation of current inventory data of the National Forest Soil Inventory (NFSI) in Brandenburg (Germany). Using the regionalisation of soil organic carbon (SOC) as an example, the application is demonstrated and discussed in detail. The depth to groundwater table and terrain parameters related to the catchment area were the main factors in SOC storage. The use of kriging did not improve the model performance. The relative depth gradients of SOC were especially distinguished by tree species composition and stand age. We suppose that interesting fields of application may be found in scenario-based modelling of SOC and when SOC serves as a basis for hydrological modelling.}, language = {en} } @article{RiekRussMarx2021, author = {Riek, Winfried and Russ, Alexander and Marx, Marc}, title = {Concentrations of Inorganic and Organic Pollutants in Forest Soils as an Archive of Anthropogenic Inputs in the State of Brandenburg, Germany}, series = {Applied Sciences}, volume = {11}, journal = {Applied Sciences}, number = {3}, publisher = {MDPI}, issn = {2076-3417}, doi = {10.3390/app11031189}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3430}, pages = {22}, year = {2021}, abstract = {An important component of the National Forest Soils Inventory (NFSI) is the investigation of inorganic and organic pollutants. Forests are able to filter out large quantities of these substances from the atmosphere and incorporate them into the soil for a long time. The aim of this study was the integrative evaluation of organic and inorganic pollutant concentrations in forest soils in the state of Brandenburg, Germany. With the help of principle component analysis, the pollutant concentrations can essentially be explained by three significant environmental components, which explain 76\% of the total variance of all pollutants examined within the scope of the NFSI. The first component characterizes the extent of the atmospheric pollution caused by flue gases and fly ash from lignite combustion in the 1970s and 1980s and is mainly charged by the organic pollutants HCB and PAH, and the elements arsenic and chromium. This component shows positive relation to both spatially interpolated calcium-deposition data from the 1980s (as an indicator for the dust emission from coal combustion) and crown defoliation data of pine stands from the forest condition survey in the early 1990s. The depositions of zinc and cadmium from industrial sources, vehicle traffic and the use of fertilizers in agriculture mainly characterize the second principle component. The use of the pesticides DDT and lindane in the early 1980s and the associated pollutants input into the forest soils are expressed by the third component. In expanding the term archiving function of soils, the results illustrate their particular importance for the long-term archiving of anthropogenic inputs and the associated potential stress factors for forests.}, language = {en} } @article{BilandZebUllahetal.2021, author = {Biland, Mazhar and Zeb, Alam and Ullah, Ayat and K{\"a}chele, Harald}, title = {Why Do Households Depend on the Forest for Income? Analysis of Factors Influencing Households' Decision-Making Behaviors}, series = {Sustainability}, volume = {13}, journal = {Sustainability}, number = {16}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su13169419}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3441}, pages = {17}, year = {2021}, abstract = {Using survey information of 150 randomly selected households across 21 villages of the forest-rich district of Swat, Pakistan, this study assessed households' decision-making behaviors in depending on income from nearby forested land using socio-economic attributes. The evidence from the study may aid in making the existing policies be better targeted toward families that depend on the forest for income. Descriptive statistics and econometric techniques such as logit and tobit were used to analyze the data. Respondent households obtained the highest share of their income from off-farm activities (37\%) and least from forest activities (16\%). Fuelwood constitutes the biggest share (66\%) of forest income, followed by medical plants (20\%) and fodder (13\%). We found that households with more physical assets, more family members working in off-farm jobs, and households earning more income from off-farm jobs were significantly and negatively associated with households' decision to depend on forest income and total income obtained. We also found that households with less distance to the market and membership to joint forest management committees (JFMCs) were significantly and negatively associated with households' total income obtained. However, household size was significantly and positively related to households' decision of forest dependency. The study recommends the creation of off-farm opportunities and inclusion of local people in the management of forests through establishment of JFMCs, particularly for large and poor families.}, language = {en} } @article{RoqueGoettertMacandzaetal.2021, author = {Roque, Dion{\´i}sio and G{\"o}ttert, Thomas and Macandza, Val{\´e}rio Ant{\´o}nio and Zeller, Ulrich}, title = {Assessing Distribution Patterns and the Relative Abundance of Reintroduced Large Herbivores in the Limpopo National Park, Mozambique}, series = {Diversity}, volume = {13}, journal = {Diversity}, number = {10}, publisher = {MDPI}, issn = {1424-2818}, doi = {10.3390/d13100456}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3454}, pages = {20}, year = {2021}, abstract = {This study is the first systematic assessment of large herbivore (LH) communities in Limpopo National Park (LNP) in Mozambique, an area where most LH species were extinct until the early 2000s. We investigate whether LH community parameters are linked with the availability of habitat types or the distance between sampling sites and the origin of LH resettlement. We placed camera traps in five habitat types in resettled and not-resettled areas to compare species richness, relative abundance index, grazers-browsers-mixed feeder and na{\"i}ve occupancy of 15 LH species. While the richness decreased along the distance gradient of LH resettlement, relative abundance index strongly responded to habitat features. The grazer-browser-mixed feeder ratio oscillated, while from resettled to not-resettled areas, the ratio increased. Most species show a wide distribution range. The associations of most LH community parameters with habitat types rather than distance to initial release, together with the species-specific and guild-specific response patterns of LH, suggest LNP to already be in an intermediate stage of restoration. Our results highlight the importance of post-release monitoring of reintroduced wildlife as a tool to assess the success of ecological restoration initiatives in transboundary conservation areas.}, language = {en} } @article{StarikGoettertZeller2021, author = {Starik, Nicole and G{\"o}ttert, Thomas and Zeller, Ulrich}, title = {Spatial Behavior and Habitat Use of Two Sympatric Bat Species}, series = {Animals}, volume = {11}, journal = {Animals}, number = {12}, publisher = {MDPI}, issn = {2076-2615}, doi = {10.3390/ani11123460}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3465}, pages = {20}, year = {2021}, abstract = {Movement behavior and habitat use of the long-eared bat species Plecotus auritus and Plecotus austriacus were studied in the Havelland region in Brandenburg (Germany). Data collection included mist-netting, radiotelemetry, reconstruction of prey items, and monitoring of roosting sites. Body measurements confirm a high degree of phenotypic similarity between the two species. Total activity areas (100\% Minimum Convex Polygons, MCPS) of Plecotus austriacus (2828.3 ± 1269.43 ha) were up to five-fold larger compared to Plecotus auritus (544.54 ± 295.89 ha). The activity areas of Plecotus austriacus contained up to 11 distinct core areas, and their mean total size (149.7 ± 0.07 ha) was approximately three-fold larger compared to core areas of Plecotus auritus (49.2 ± 25.6 ha). The mean distance between consecutive fixes per night was 12.72 ± 3.7 km for Plecotus austriacus and 4.23 ± 2.8 km for Plecotus auritus. While Plecotus austriacus was located most frequently over pastures (>40\%) and meadows (>20\%), P. auritus was located mostly within deciduous (>50\%) and mixed forests (>30\%) in close vicinity to its roosts. Roost site monitoring indicates that the activity of P. austriacus is delayed relative to P. auritus in spring and declined earlier in autumn. These phenological differences are probably related to the species' respective diets. Levins' measure of trophic niche breadth suggests that the prey spectrum for P. auritus is more diverse during spring (B = 2.86) and autumn (B = 2.82) compared to P. austriacus (spring: B = 1.7; autumn: B = 2.1). Our results give reason to consider these interspecific ecological variations and species-specific requirements of P. auritus and P. austriacus to develop adapted and improved conservation measures.}, language = {en} } @misc{FranzkeCiulloGilmoreetal.2022, author = {Franzke, Christian L E and Ciullo, Alessio and Gilmore, Elisabeth A and Matias, Denise Margaret and Nagabhatla, Nidhi and Orlov, Anton and Paterson, Shona K and Scheffran, J{\"u}rgen and Sillmann, Jana}, title = {Perspectives on tipping points in integrated models of the natural and human Earth system: cascading effects and telecoupling}, series = {Environmental Research Letters}, volume = {17}, journal = {Environmental Research Letters}, number = {1}, publisher = {IOP Publishing Ltd}, issn = {1748-9326}, doi = {10.1088/1748-9326/ac42fd}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3476}, pages = {12}, year = {2022}, abstract = {The Earth system and the human system are intrinsically linked. Anthropogenic greenhouse gas emissions have led to the climate crisis, which is causing unprecedented extreme events and could trigger Earth system tipping elements. Physical and social forces can lead to tipping points and cascading effects via feedbacks and telecoupling, but the current generation of climate-economy models do not generally take account of these interactions and feedbacks. Here, we show the importance of the interplay between human societies and Earth systems in creating tipping points and cascading effects and the way they in turn affect sustainability and security. The lack of modeling of these links can lead to an underestimation of climate and societal risks as well as how societal tipping points can be harnessed to moderate physical impacts. This calls for the systematic development of models for a better integration and understanding of Earth and human systems at different spatial and temporal scales, specifically those that enable decision-making to reduce the likelihood of crossing local or global tipping points.}, language = {en} } @article{LoebjinskiRugPasternak2020, author = {Loebjinski, Maria and Rug, Wolfgang and Pasternak, Hartmut}, title = {The Influence of Improved Strength Grading In Situ on Modelling Timber Strength Properties}, series = {Buildings}, volume = {10}, journal = {Buildings}, number = {2}, publisher = {MDPI}, issn = {2075-5309}, doi = {10.3390/buildings10020030}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2736}, pages = {15}, year = {2020}, abstract = {The management and preservation of structures in our built environment are central and challenging tasks for practicing engineers. Within the CEN member states (European Committee for Standardization), the so-called Eurocodes form the basis of the design and verification of the load-bearing capacity of structures. Current Eurocodes do not contain special recommendations for existing structures, meaning that the principles for new structures are applied. This can lead to an incorrect estimation of the load-bearing capacity within the semi-probabilistic safety concept. A central task within the investigation and evaluation of existing structures is the strength grading of the material in situ using non-/semi-destructive technical devices. Studies show the potential of the ultrasonic time-of-flight measurement in combination with visual evaluation for an improved grading. The information on the material from an improved grading technique can be used to update the material parameters as a target variable using a measured reference variable. In this contribution, test data from a partner project (spruce, pine, and oak) are analyzed, applying the stochastic grading model of P{\"o}hlmann and Rackwitz. It can be shown that different grading techniques influence the updated distribution function of the material strength within the grade. The results depend on the timber species. Perspectives to develop updated models dependent on the knowledge available are shown and discussed.}, language = {en} } @article{EriksenVersluijsFuchsetal.2022, author = {Eriksen, Ane and Versluijs, Erik and Fuchs, Boris and Zimmermann, Barbara and Wabakken, Petter and Ordiz, Andr{\´e}s and Sunde, Peter and Wikenros, Camilla and Sand, H{\aa}kan and Gillich, Benjamin and Michler, Frank and Nordli, Kristoffer and Carricondo-Sanchez, David and Gorini, Lucrezia and Rieger, Siegfried}, title = {A Standardized Method for Experimental Human Approach Trials on Wild Wolves}, series = {Frontiers in Ecology and Evolution}, volume = {10}, journal = {Frontiers in Ecology and Evolution}, publisher = {Frontiers Media S.A.}, issn = {2296-701X}, doi = {10.3389/fevo.2022.793307}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2788}, pages = {17}, year = {2022}, abstract = {As wolves recolonize areas of Europe ranging from moderate to high anthropogenic impact, fear of wolves is a recurring source of conflict. Shared tools for evaluating wolf responses to humans, and comparing such responses across their range, can be valuable. Experiments in which humans approach wild wolves can increase our understanding of how wolves respond to humans, facilitating human-wolf coexistence. We have developed the first standardized protocol for evaluating wolf responses to approaching humans using high-resolution GPS data, and tested it on wild wolves. We present a field protocol for experimentally approaching GPS-collared wolves, a descriptive comparison of two statistical methods for detecting a measurable flight response, a tutorial for identifying wolf flight initiation and resettling positions, and an evaluation of the method when reducing GPS positioning frequency. The field protocol, a data collection form, and the tutorial with R code for extracting flight parameters are provided. This protocol will facilitate studies of wolf responses to approaching humans, applicable at a local, national, and international level. Data compiled in a standardized way from multiple study areas can be used to quantify the variation in wolf responses to humans within and between populations, and in relation to predictors such as social status, landscape factors, or human population density, and to establish a baseline distribution of wolf response patterns given a number of known predictors. The variation in wolf responses can be used to assess the degree to which results can be generalized to areas where GPS studies are not feasible, e.g., for predicting the range of likely wolf behaviors, assessing the likelihood of wolf-human encounters, and complementing existing tools for evaluating reports of bold wolves. Showing how wolves respond to human encounters should help demystify the behavior of wild wolves toward humans in their shared habitat.}, language = {en} } @article{LuoZuberiLiuetal.2021, author = {Luo, Anran and Zuberi, Mehwish and Liu, Jiayu and Perrone, Miranda and Schnepf, Simone and Leipold, Sina}, title = {Why common interests and collective action are not enough for environmental cooperation - Lessons from the China-EU cooperation discourse on circular economy}, series = {Global Environmental Change}, volume = {71}, journal = {Global Environmental Change}, publisher = {Elsevier}, doi = {10.1016/j.gloenvcha.2021.102389}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2554}, pages = {10}, year = {2021}, abstract = {Scholars have argued that circular economy (CE) must be upscaled and globalized to address excessive resource extraction and waste generation. Many CE practitioners consider the first international CE agreement between China and the EU a milestone towards such an effort. This analysis shows why this expectation is premature. European and Chinese stakeholders' optimistic and depoliticized CE narratives disable communication regarding development disparities, negative competition and distrust, which shape geopolitical rivalry. While skeptical narratives that address political barriers exist, they fall short of suggesting alternatives. Based on 72 stakeholder interviews, 40 documents and participant observation, these results highlight the critical importance of investigating narrative strategies to repoliticize environmental cooperation. Such narrative strategies would support contestation and negotiation on development disparities and open channels for joint conceptualization of implementation scales for environmental strategies, circular or otherwise. We therefore propose using constructivist perspectives of international relations to explore discursive barriers and enablers to global environmental action.}, language = {en} } @article{HalwaniRecklingEgamberdievaetal.2021, author = {Halwani, Mosab and Reckling, Moritz and Egamberdieva, Dilfuza and Omari, Richard Ansong and Bellingrath-Kimura, Sonoko Dorothea and Bachinger, Johann and Bloch, Ralf}, title = {Soybean Nodulation Response to Cropping Interval and Inoculation in European Cropping Systems}, series = {Frontiers in Plant Science}, volume = {12}, journal = {Frontiers in Plant Science}, publisher = {Frontiers Media S.A.}, issn = {1664-462X}, doi = {10.3389/fpls.2021.638452}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2576}, pages = {9}, year = {2021}, abstract = {To support the adaption of soybean [Glycine max (L) Merrill] cultivation across Central Europe, the availability of compatible soybean nodulating Bradyrhizobia (SNB) is essential. Little is known about the symbiotic potential of indigenous SNB in Central Europe and the interaction with an SNB inoculum from commercial products. The objective of this study was to quantify the capacity of indigenous and inoculated SNB strains on the symbiotic performance of soybean in a pot experiment, using soils with and without soybean history. Under controlled conditions in a growth chamber, the study focused on two main factors: a soybean cropping interval (time since the last soybean cultivation; SCI) and inoculation with commercial Bradyrhizobia strains. Comparing the two types of soil, without soybean history and with 1-4 years SCI, we found out that plants grown in soil with soybean history and without inoculation had significantly more root nodules and higher nitrogen content in the plant tissue. These parameters, along with the leghemoglobin content, were found to be a variable among soils with 1-4 years SCI and did not show a trend over the years. Inoculation in soil without soybean history showed a significant increase in a nodulation rate, leghemoglobin content, and soybean tissue nitrogen concentration. The study found that response to inoculation varied significantly as per locations in soil with previous soybean cultivation history. An inoculated soybean grown on loamy sandy soils from the location M{\"u}ncheberg had significantly more nodules as well as higher green tissue nitrogen concentration compared with non-inoculated plants. No significant improvement in a nodulation rate and tissue nitrogen concentration was observed for an inoculated soybean grown on loamy sandy soils from the location Fehrow. These results suggest that introduced SNB strains remained viable in the soil and were still symbiotically competent for up to 4 years after soybean cultivation. However, the symbiotic performance of the SNB remaining in the soils was not sufficient in all cases and makes inoculation with commercial products necessary. The SNB strains found in the soil of Central Europe could also be promising candidates for the development of inoculants and already represent a contribution to the successful cultivation of soybeans in Central Europe.}, language = {en} } @article{NosenkoHankeUheHeineetal.2021, author = {Nosenko, Tetyana and Hanke-Uhe, Manuel and Heine, Philip Alexander and Shahid, Afsheen and D{\"u}bel, Stefan and Rennenberg, Heinz and Schumacher, J{\"o}rg and Winkler, Jana Barbro and Schnitzler, J{\"o}rg-Peter and H{\"a}nsch, Robert and Kaufholdt, David}, title = {Plant Defense Proteins as Potential Markers for Early Detection of Forest Damage and Diseases}, series = {Frontiers in Forests and Global Change}, volume = {4}, journal = {Frontiers in Forests and Global Change}, publisher = {Frontiers}, issn = {2624-893X}, doi = {10.3389/ffgc.2021.654032}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2587}, pages = {5}, year = {2021}, abstract = {Over the last two decades, European forest ecosystems have been exposed to increasing stress associated with an increasing number, duration and severity of extreme events triggered by climate change (Dyderski et al., 2018). For forest plants, the concomitant stresses are not limited to direct detrimental effects of rising temperatures, drought and heavy rainfall, but also include enhanced virulence of native plant pathogens and herbivores and the introduction of new pests (Stenlid and Oliva, 2016). The detection of forest diseases at an early stage, when visible symptoms cannot yet be observed, is a crucial prerequisite to counteract regional spreading of pathogens. However, the effective monitoring of forest damage and diseases requires reliable and easy-to-use portable test systems.}, language = {en} } @article{PrimmerVarumoKrauseetal.2020, author = {Primmer, Eeva and Varumo, Liisa and Krause, Torsten and Orsi, Francesco and Geneletti, Davide and Brogaard, Sara and Aukes, Ewert and Ciolli, Marco and Grossmann, Carol and Hern{\´a}ndez-Morcillo, M{\´o}nica and Kister, Jutta and Kluv{\´a}nkov{\´a}, Tatiana and Loft, Lasse and Maier, Carolin and Meyer, Claas and Schleyer, Christian and Spacek, Martin and Mann, Carsten}, title = {Mapping Europe's institutional landscape for forest ecosystem service provision, innovations and governance}, series = {Ecosystem Services}, volume = {47}, journal = {Ecosystem Services}, publisher = {Elsevier}, issn = {2212-0416}, doi = {10.1016/j.ecoser.2020.101225}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2597}, pages = {11}, year = {2020}, abstract = {There has been a strong quest for mapping and assessing ecosystem services (ES) to support governance. Yet, the institutional landscape that governs ES provision across multiple contexts has received less attention. We fill this research gap by developing and operationalising a framework for the analysis of policy documents that address European forest ES provision. By coding and analysing references to forest ES as well as innovations and governance mechanisms addressing these ES in national strategies on forest, biodiversity and bioeconomy, we map the institutional landscape of forest ES provision in Europe. We further analyse how biophysical supply of forest ES is connected to policies paying attention to ES and identifying innovations and governance for their provision. Innovations identified in policies centre around value chains of wood and bioenergy or biodiversity conservation, while non-wood forest products, cultural heritage, and recreation receive little attention. Biophysical supply of provisioning ES is connected to policies emphasising many innovations, while little supply of regulating ES could trigger service innovations and several new governance mechanisms. As forest ecosystems have received much attention in global, European and national sustainability policies, our institutional mapping illustrates that there is room for more use of innovations in promoting ES provision.}, language = {en} } @article{BoseScherrerCamareroetal.2021, author = {Bose, Arun K. and Scherrer, Daniel and Camarero, j. Julio and Ziche, Daniel and Babst, Flurin and Bigler, Christof and Bolte, Andreas and Dorado-Li{\~n}{\´a}n, Isabel and Etzold, Sophia and Fonti, Patrick and Forrester, David I. and Gavinet, Jordane and Gazol, Antonio and Gonz{\´a}lez de Andr{\´e}s, Ester and Karger, Dirk Nikolaus and Lebourgeois, Francois and L{\´e}vesque, Mathieu and Mart{\´i}nez-Sancho, Elisabet and Menzel, Annette and Neuwirth, Burkhard and Nicolas, Manuel and Sanders, Tanja G. M. and Scharnweber, Tobias and Schr{\"o}der, Jens and Zweifel, Roman and Gessler, Arthur and Rigling, Andreas}, title = {Climate sensitivity and drought seasonality determine post-drought growth recovery of Quercus petraea and Quercus robur in Europe}, series = {Science of The Total Environment}, volume = {784}, journal = {Science of The Total Environment}, publisher = {Elsevier}, issn = {1879-1026}, doi = {10.1016/j.scitotenv.2021.147222}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-2609}, pages = {13}, year = {2021}, abstract = {Recent studies have identified strong relationships between delayed recovery of tree growth after drought and tree mortality caused by subsequent droughts. These observations raise concerns about forest ecosystem services and post-drought growth recovery given the projected increase in drought frequency and extremes. For quantifying the impact of extreme droughts on tree radial growth, we used a network of tree-ring width data of 1689 trees from 100 sites representing most of the distribution of two drought tolerant, deciduous oak species (Quercus petraea and Quercus robur). We first examined which climatic factors and seasons control growth of the two species and if there is any latitudinal, longitudinal or elevational trend. We then quantified the relative departure from pre-drought growth during droughts, and how fast trees were able to recover the pre-drought growth level. Our results showed that growth was more related to precipitation and climatic water balance (precipitation minus potential evapotranspiration) than to temperature. However, we did not detect any clear latitudinal, longitudinal or elevational trends except a decreasing influence of summer water balance on growth of Q. petraea with latitude. Neither species was able to maintain the pre-drought growth level during droughts. However, both species showed rapid recovery or even growth compensation after summer droughts but displayed slow recovery in response to spring droughts where none of the two species was able to fully recover the pre-drought growth-level over the three post-drought years. Collectively, our results indicate that oaks which are considered resilient to extreme droughts have also shown vulnerability when droughts occurred in spring especially at sites where long-term growth is not significantly correlated with climatic factors. This improved understanding of the role of drought seasonality and climate sensitivity of sites is key to better predict trajectories of post-drought growth recovery in response to the drier climate projected for Europe.}, language = {en} } @article{HentschelMoellerWenningetal.2018, author = {Hentschel, Rainer and M{\"o}ller, Katrin and Wenning, Aline and Degenhardt, Annett and Schr{\"o}der, Jens}, title = {Importance of Ecological Variables in Explaining Population Dynamics of Three Important Pine Pest Insects}, series = {Frontiers in Plant Science}, journal = {Frontiers in Plant Science}, number = {9}, publisher = {Frontiers Media S.A.}, issn = {1664-462X}, doi = {10.3389/fpls.2018.01667}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3285}, pages = {17}, year = {2018}, abstract = {Climate change challenges forest vitality both directly by increasing drought and heat periods and indirectly, e.g., by creating favorable conditions for mass outbreaks of phyllophagous insects. The large forests dominated by Scots pine (Pinus sylvestris L.) that cover the lowland regions in northeast Germany have already been affected regularly by cyclic mass propagations of defoliating insect species in the past with climate projections implying an even more advantageous environment for devastating outbreaks in the future. To improve predictive and responsive capacities we have investigated a wide range of ecological parameters to identify those most strongly related to past outbreak waves of three central species. In total, we analyzed 3,748 variables covering stand and neighborhood properties, site quality, and climatic conditions for an area of roughly 750,000 ha of pine forests in the period 2002-2016. To reflect sensitivity against varying climate, we computed "floating windows" in relation to critical phenological phases of the respective insects. The parameters with the highest explanatory power resulted from the variable importance measures of the Random Forest (RF) methodology and have been evaluated by a 10-fold cross-validation process. Our findings closely reflect the known specific gradation patterns and show that relative variable importance varies with species. While Lymantria monacha L. feeding was mainly dependent on the surroundings of the respective stand, Diprion pini L. proved to be almost exclusively susceptible to climatic effects in its population dynamics. Dendrolimus pini L. exhibited a mixed pattern of variable importance involving both climatic and forest structure parameters. In many cases the obtained statistical results support well-known ecological cause-effect relations and long-term population change dynamics. The RF delivered very high levels of sensitivity and specificity in the developed classifications and proved to be an excellent tool to handle the large amounts of data utilized for this study. While the presented classification approach may already support a better prognosis of the amplitude during the outbreak culmination, the obtained (most important) variables are proposed as preferable covariates for modeling population dynamics of the investigated insect species.}, language = {en} } @article{VogelGebbersOerteletal.2019, author = {Vogel, Sebastian and Gebbers, Robin and Oertel, Marcel and Kramer, Eckart}, title = {Evaluating Soil-Borne Causes of Biomass Variability in Grassland by Remote and Proximal Sensing}, series = {Sensors}, volume = {19}, journal = {Sensors}, number = {20}, publisher = {MDPI}, issn = {1424-8220}, doi = {10.3390/s19204593}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3294}, pages = {16}, year = {2019}, abstract = {On a grassland field with sandy soils in Northeast Germany (Brandenburg), vegetation indices from multi-spectral UAV-based remote sensing were used to predict grassland biomass productivity. These data were combined with soil pH value and apparent electrical conductivity (ECa) from on-the-go proximal sensing serving as indicators for soil-borne causes of grassland biomass variation. The field internal magnitude of spatial variability and hidden correlations between the variables of investigation were analyzed by means of geostatistics and boundary-line analysis to elucidate the influence of soil pH and ECa on the spatial distribution of biomass. Biomass and pH showed high spatial variability, which necessitates high resolution data acquisition of soil and plant properties. Moreover, boundary-line analysis showed grassland biomass maxima at pH values between 5.3 and 7.2 and ECa values between 3.5 and 17.5 mS m-1. After calibrating ECa to soil moisture, the ECa optimum was translated to a range of optimum soil moisture from 7\% to 13\%. This matches well with to the plant-available water content of the predominantly sandy soil as derived from its water retention curve. These results can be used in site-specific management decisions to improve grassland biomass productivity in low-yield regions of the field due to soil acidity or texture-related water scarcity.}, language = {en} } @article{HalwaniRecklingSchuleretal.2019, author = {Halwani, Mosab and Reckling, Moritz and Schuler, Johannes and Bloch, Ralf and Bachinger, Johann}, title = {Soybean in No-Till Cover-Crop Systems}, series = {Agronomy}, volume = {9}, journal = {Agronomy}, number = {12}, publisher = {MDPI}, issn = {2073-4395}, doi = {10.3390/agronomy9120883}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3314}, pages = {17}, year = {2019}, abstract = {Introducing agro-ecological techniques such as no-tillage systems with cover crops in rotations with soybean (Glycine max (L.) Merr.) could provide more resilience to changing climatic conditions and, at the same time, reduce soil erosion, nitrate leaching, and weed density in the main crop. However, there are challenges in introducing no-tillage techniques in crop systems in Europe as there is little quantitative knowledge about the agro-economic impact. The objectives of this study were to evaluate the agronomic and economic impacts of three soybean cropping systems involving a rye (Secale cereal L.) cover crop prior to soybean, i.e., two no-tillage systems; either herbicide-free with crimping the rye or herbicide-based without rye crimping and one plough-based in which rye was cut as green silage. The impacts of these cropping strategies were compared in a three-year cropping system experiment at a research station in north-eastern Germany with and without irrigation. The following parameters were measured: (1) cover crop biomass; (2) weed biomass; (3) soybean plant density; (4) soybean grain yield; and (5) gross margin of the cropping system. The results showed that all three soybean cropping systems can effectively suppress weeds. System (C), the no-tillage herbicide-based system, produced the lowest rye biomass and highest soybean yield; system (B), the no-tillage herbicide-free/crimped rye system, produced the highest rye biomass and lowest soybean yield compared to system (A), the standard cutting/plough-based system. The differences in rye biomass and soybean yield observed between the three systems could be mainly attributed to the timing of the cover crop termination and the soybean sowing date. The gross margin was highest in system (C), due to the high soybean grain yield. The low soybean grain yield in system (B) resulted in lower revenues and gross margins compared to systems (A) and (C), although system (B) could be economically attractive in organic farming with higher prices for organic soybean. In the particularly dry year 2016, gross margins were higher when soybean was irrigated compared to the rainfed cultivation, due to significantly higher grain yields. Before recommending the application of the no-tillage with cover crop technique for the conditions tested in north-eastern Germany, more investigations on the benefits and risks of this technique are needed. Further research needs to focus on maintaining a high rye biomass as well as on ensuring an early soybean planting date. Optimizing the crimping and drilling equipment is still required in order to develop good management practices for no-tillage herbicide-free systems in European conditions.}, language = {en} } @article{JhaKaecheleSieber2019, author = {Jha, Srijna and K{\"a}chele, Harald and Sieber, Stefan}, title = {Factors Influencing the Adoption of Water Conservation Technologies by Smallholder Farmer Households in Tanzania}, series = {Water}, volume = {11}, journal = {Water}, number = {12}, publisher = {MDPI}, issn = {2073-4441}, doi = {10.3390/w11122640}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3320}, pages = {18}, year = {2019}, abstract = {In Tanzania, the increasing population coupled with climate change amplifies issues of food insecurity and negatively impacts the livelihoods of smallholder farmer households. To address these issues a range of water conservation techniques (WCTs) have been useful. However, the adoption of these WCTs in Tanzania has been limited due to many reasons. With the objective to better understand and identify the factors that significantly influence the adoption of WCTs in Tanzania, the study uses survey data from 701 smallholder farmer households and a bivariate logistic regression, to provide, for the first time, a comprehensive model for the adoption of WCTs in Tanzania that includes a range of individual, household, socio-economic, and farmer perception related variables (factors). The evaluation shows that 120 farmers (17.12\%) adopted WCTs and finds the farmer perceptions of rainfall instability, household wealth, and food security to be crucial. The results suggest that policy interventions should encourage conservation behavior (especially when the rainfall is perceived to be uncertain), emphasize the economic and food security-related benefits of adopting WCTs, include strategies that make adoption of WCTs attractive to female-led households, attempt to reach greater number of farmers via social networks and provide better access to public funds for farmers.}, language = {en} } @article{MahmoodArshadKaecheleetal.2020, author = {Mahmood, Nasir and Arshad, Muhammad and K{\"a}chele, Harald and Shahzad, Muhammad Faisal and Ullah, Ayat and Mueller, Klaus}, title = {Fatalism, Climate Resiliency Training and Farmers' Adaptation Responses: Implications for Sustainable Rainfed-Wheat Production in Pakistan}, series = {Sustainability}, volume = {12}, journal = {Sustainability}, number = {4}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su12041650}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3338}, pages = {21}, year = {2020}, abstract = {Climate change is a severe threat to the agricultural sector in general and to rainfed farming in particular. The aim of this study was to investigate the factors that can potentially affect the adaptation process against climate change. This study focused on wheat farmers and farming systems in the rainfed agroecological zone of Pakistan. Farmers' data related to climate change fatalism, the availability of climate-specific extension services, socioeconomic and institutional variables, and farm characteristics were collected. A logit model to assess farmers' decisions to adopt an adaptation measure and a multinomial logit model to assess their choice of various adaptation measures were used. The results showed that fatalistic farmers were unlikely to implement climate change adaptation measures. The variables related to the climate-specific extension services, including farmers' participation in training on climate-resilient crop farming and the availability of mobile communication-based advisory services, had highly significant and positive impacts on farmers' decisions and their choice of adaptation measures. Input market access and tractor ownership also had positive and significant impacts on farmers' decisions to adapt and their choice of adaptation measures. This study highlights the need to improve rainfed-wheat farmers' education levels to change their fatalistic attitudes towards climate change. Furthermore, government action is needed to provide climate-specific extension services to ensure sustainable production levels that will ultimately lead to food and livelihood security under a changing climate.}, language = {en} } @article{JhaKaecheleLanaetal.2020, author = {Jha, Srijna and K{\"a}chele, Harald and Lana, Marcos and Amjath-Babu, T.S and Sieber, Stefan}, title = {Exploring Farmers' Perceptions of Agricultural Technologies: A Case Study from Tanzania}, series = {Sustainability}, volume = {13}, journal = {Sustainability}, number = {3}, publisher = {MDPI}, issn = {2071-1050}, doi = {10.3390/su12030998}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3340}, pages = {21}, year = {2020}, abstract = {The low agricultural productivity of key crops and food insecurity continue to be key issues in Sub-Saharan Africa (SSA) and Tanzania. The growing population, depleting resources, and changing climate further amplify these issues. Globally, many agricultural technologies (AgTs) are available as pathways for improved agricultural productivity and food security, however, they have had relatively little success in SSA and Tanzania. This is because the uptake of AgTs is a complex process, which is highly localized, involving multiple actors, stages, and spatial and time dimensions. Smallholder farmers often experience issues of sustainability, constraints for adoption, and scaling-up throughout the uptake process of AgTs, all of which vary by region. This indicates a need for a systematic and simultaneous understanding of sustainability, constraints for adoption, and scaling-up of AgTs to better guide agricultural strategy and policy interventions in SSA and Tanzania. Moreover, in order to understand the local settings better, a consideration of the perceptions of the farmers themselves, who are the primary actors in the uptake process of AgTs, is key. Acknowledging this, the study takes on a case study approach, using the scaling-up assessment (ScalA) method and three focus group discussions with a total of 44 smallholder farmers to systematically and simultaneously assess the sustainability, constraints for adoption, and scaling-up of three AgTs (use of fertilizers, improved seeds, and small-scale irrigation) in Tanzania. The study finds that the farmers perceive all three AgTs to be sustainable for the study region. Adoption rates are perceived to be medium for use of fertilizers, high for improved seeds, and low for small-scale irrigation. The most significant constraints for adoption experienced by the farmers are lack of technical physical inputs, marketing facilities, and know-how. Scaling-up is perceived to be well fulfilled for use of fertilizers and improved seeds, but only partially fulfilled for small-scale irrigation, which is the most limited of the three AgTs. The most significant constraints for scaling-up experienced by farmers are a lack of confidence in the added value of the AgTs beyond project activities, marketing facilities, and technical physical inputs. The overall success potential is high for the use of fertilizers and improved seeds, and the average for small-scale irrigation. The farmers' perceptions partially indicate why the bundle of AgTs is lacking in the study region and provide a basis for discussing targeted agricultural and policy interventions in Tanzania.}, language = {en} } @article{AneesMannSharmaetal.2020, author = {Anees, Mangalasseril Mohammad and Mann, Deepika and Sharma, Mani and Banzhaf, Ellen and Joshi, Pawan K}, title = {Assessment of Urban Dynamics to Understand Spatiotemporal Differentiation at Various Scales Using Remote Sensing and Geospatial Tools}, series = {Remote Sensing}, volume = {12}, journal = {Remote Sensing}, number = {8}, publisher = {MDPI}, issn = {2072-4292}, doi = {10.3390/rs12081306}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3368}, pages = {30}, year = {2020}, abstract = {Analysis of urban dynamics is a pivotal step towards understanding landscape changes and developing scientifically sound urban management strategies. Delineating the patterns and processes shaping the evolution of urban regions is an essential part of this step. Utilizing remote-sensing techniques and Geographic Information System (GIS) tools, we performed an integrated analysis on urban expansion in Srinagar city and surrounding areas from 1999 to 2017 at multiple scales in order to assist urban planning initiatives. To capture various spatial indicators of expansion, we analysed (i) land use/land cover (LULC) changes, (ii) rate and intensity of changes to built-up areas, (iii) spatial differentiation in landscape metrics (at 500, 1000 and 2000 m cell-size), and (iv) growth type of the urban expansion. Global Moran's I statistics and local indicators of spatial association (LISA) were also employed to identify hotspots of change in landscape structure. Our methodology utilizes a range of geovisualization tools which are capable of appropriately addressing various elements required for strategic planning in growing cities. The results highlight aggregation and homogenization of the urban core as well as irregularity and fragmentation in its periphery. A combination of spatial metrics and growth type analysis supports the supposition that there is a continuum in the diffusion-coalescence process. This allows us to extend our understanding of urban growth theory and to report deviations from accepted stages of growth. As our results show, each dominating growth phase of the city—both diffusion (1999) and coalescence (2009 and 2017)—is interspersed with features from the other type. An improved understanding of spatial differentiation and the identification of hotspots can serve to make urban planning more tailored to such local conditions. An important insight derived from the results is the applicability of remote-sensing data in urban planning measures and the usefulness of freely available medium resolution data in gaining a comprehensive understanding of the evolution of cities.}, language = {en} } @article{VogelBoeneckeKlingetal.2020, author = {Vogel, Sebastian and B{\"o}necke, Eric and Kling, Charlotte and Kramer, Eckart and L{\"u}ck, Katrin and Nagel, Anne and Philipp, Golo and R{\"u}hlmann, J{\"o}rg and Schr{\"o}ter, Ingmar and Gebbers, Robin}, title = {Base Neutralizing Capacity of Agricultural Soils in a Quaternary Landscape of North-East Germany and Its Relationship to Best Management Practices in Lime Requirement Determination}, series = {Agronomy}, volume = {10}, journal = {Agronomy}, number = {6}, publisher = {MDPI}, issn = {2073-4395}, doi = {10.3390/agronomy10060877}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-3370}, pages = {18}, year = {2020}, abstract = {Despite being a natural soil-forming process, soil acidification is a major agronomic challenge under humid climate conditions, as soil acidity influences several yield-relevant soil properties. It can be counterbalanced by the regular application of agricultural lime to maintain or re-establish soil fertility and to optimize plant growth and yield. To avoid underdose as well as overdose, lime rates need to be calculated carefully. The lime rate should be determined by the optimum soil pH (target pH) and the response of the soil to lime, which is described by the base neutralizing capacity (BNC). Several methods exist to determine the lime requirement (LR) to raise the soil pH to its optimum. They range from extremely time-consuming equilibration methods, which mimic the natural processes in the soil, to quick tests, which rely on some approximations and are designed to provide farmers with timely and cost-efficient data. Due to the higher analytical efforts, only limited information is available on the real BNC of particular soils. In the present paper, we report the BNC of 420 topsoil samples from Central Europe (north-east Germany), developed on sediments from the last ice age 10,000 years ago under Holocene conditions. These soils are predominantly sandy and low in humus, but they exhibit a huge spatial variability in soil properties on a small scale. The BNC was determined by adding various concentrations of Ca(OH)2 and fitting an exponential model to derive a titration curve for each sample. The coefficients of the BNC titration curve were well correlated with soil properties affecting soil acidity and pH buffer capacity, i.e., pH, soil texture and soil organic matter (SOM). From the BNC model, the LRs (LRBNC) were derived and compared with LRVDLUFA based on the standard protocol in Germany as established by the Association of German Agricultural Analytic and Research Institutes (VDLUFA). The LRBNC and LRVDLUFA correlated well but the LRVDLUFA were generally by approximately one order of magnitude higher. This is partly due to the VDLUFA concept to recommend a maintenance or conservation liming, even though the pH value is in the optimum range, to keep it there until the next lime application during the following rotation. Furthermore, the VDLUFA method was primarily developed from field experiments where natural soil acidification and management practices depressed the effect of lime treatment. The BNC method, on the other hand, is solely based on laboratory analysis with standardized soil samples. This indicates the demand for further research to develop a sound scientific algorithm that complements LRBNC with realistic values of annual Ca2+ removal and acidification by natural processes and N fertilization.}, language = {en} } @article{TannebergerBirrCouwenbergetal.2022, author = {Tanneberger, Franziska and Birr, Friedrich and Couwenberg, John and Kaiser, Moritz and Luthardt, Vera and Nerger, Monique and Pfister, Sonja and Oppermann, Rainer and Zeitz, Jutta and Beyer, Colja and van der Linden, Sebastian and Wichtmann, Wendelin and N{\"a}rmann, Felix}, title = {Saving soil carbon, greenhouse gas emissions, biodiversity and the economy: paludiculture as sustainable land use option in German fen peatlands}, series = {Regional Environmental Change}, volume = {22}, journal = {Regional Environmental Change}, publisher = {Springer Nature}, issn = {1436-3798}, doi = {10.1007/s10113-022-01900-8}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-5003}, year = {2022}, abstract = {Peatlands in the European Union are largely drained for agriculture and emit 25\% of the total agricultural greenhouse gas emissions. Drainage-based peatland use has also negative impacts on water quality, drinking water provision and biodiversity. Consequently, key EU environmental policy objectives include the rewetting of all drained peatlands as an essential nature-based solution. Rewetting of peatlands can be combined with site-adapted land use, so-called paludiculture. Paludiculture produces biomass from wet and rewetted peatlands under conditions that maintain the peat body, facilitate peat accumulation and can provide many of the ecosystem services associated with natural, undrained peatlands. The biomass can be used for a wide range of traditional and innovative food, feed, fibre and fuel products. Based on examples in Germany, we have analysed emerging paludiculture options for temperate Europe with respect to greenhouse gas fluxes, biodiversity and indicative business economics. Best estimates of site emission factors vary between 0 and 8 t CO2eq ha-1 y-1. Suitability maps for four peatland-rich federal states (76\% of total German peatland area) indicate that most of the drained, agriculturally used peatland area could be used for paludiculture, about one-third of the fen area for any paludiculture type. Fen-specific biodiversity benefits from rewetting and paludiculture, if compared to the drained state. Under favourable conditions, paludiculture can be economically viable, but costs and revenues vary considerably. Key recommendations for large-scale implementation are providing planning security by paludiculture spatial planning, establishing best practice sites and strengthening research into crops, water tables and management options.}, language = {en} } @article{AmblardMann2021, author = {Amblard, Laurence and Mann, Carsten}, title = {Understanding collective action for the achievement of EU water policy objectives in agricultural landscapes: Insights from the Institutional Design Principles and Integrated Landscape Management approaches}, series = {Environmental Science \& Policy}, journal = {Environmental Science \& Policy}, number = {125}, publisher = {Elsevier}, issn = {1462-9011}, doi = {10.1016/j.envsci.2021.08.015}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-5017}, pages = {76 -- 86}, year = {2021}, abstract = {This paper aims to identify drivers and barriers to the achievement of EU water policy objectives in the agricultural sector by adopting an institutional perspective on water quality management at the landscape level. We apply a conceptual framework combining Integrated Landscape Management (ILM) and Institutional Design Principles (IDP) perspectives to analyze cooperation initiatives involving water suppliers and agricultural stakeholders to protect drinking water catchments from agricultural diffuse pollution. Three cases representing different forms of cooperation in rural landscapes in France were investigated on the basis of primary data collected at the local, water-basin and national levels. The results show that the success of multi-stakeholder collective action depends on both local factors such as characteristics of the water resource and stakeholders (knowledge, resources, trust and social capital) and on factors linked to the EU and national water and agricultural policy frameworks. In addition to the identification of drivers of and constraints on the implementation of EU water policy in agricultural landscapes, the analysis highlights the conceptual added value in combining the IDP and ILM approaches to understand policy implementation processes at the landscape level.}, language = {en} } @article{MissallAblizHaliketal.2018, author = {Missall, Siegmund and Abliz, Abdulla and Halik, {\"U}m{\"u}t and Thevs, Niels and Welp, Martin}, title = {Trading Natural Riparian Forests for Urban Shelterbelt Plantations—A Sustainability Assessment of the K{\"o}kyar Protection Forest in NW China}, series = {Water}, journal = {Water}, number = {10(3)}, issn = {2073-4441}, doi = {10.3390/w10030343}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-5022}, pages = {18}, year = {2018}, abstract = {Cities at the fringe of the Taklimakan desert in NW China are prone to dust and sand storms with serious consequences for human well-being. The K{\"o}kyar Protection Forest was established in the 1980s as an ecological engineering project with the intent of protecting the city of Aksu, NW China, from these impacts. It is designed as a combination of poplar shelterbelts and orchards, irrigated by river water from the Aksu River, the main tributary of the Tarim River. Prevalent literature describes it as an afforestation project for combatting desertification with manifold positive effects for the economic, social, and environmental dimension of sustainable development. This paper sets out to challenge these claims by a sustainability assessment in which the plantation is examined from a broader perspective, embedding it to the wider context of social and environmental problems in South Xinjiang. Methods comprise evapotranspiration calculations, interviews, a socioeconomic household survey, stakeholder dialogues, and literature research. Results affirm its economic sustainability, but see a mixed record for the social sphere. From the nature conservation point of view, it has to be classified as unsustainable because its high irrigation water consumption results in the downstream desiccation and desertification of natural riparian forests along the Tarim River, causing a forest loss in the downstream area twice the size of the forest gain in the upstream area. There is a trade-off between artificial shelterbelt plantations for urban ecosystem services on the one hand side, and natural riparian forests and their biodiversity on the other hand side. The paper recommends restricting agricultural extension, and using locally adapted less water consuming agroforestry schemes to protect urban dwellers from dust stress.}, language = {en} } @article{MartensMolitor2020, author = {Martens, D{\"o}rte and Molitor, Heike}, title = {Play in appropriate natural environments to support child development}, series = {PsyEcology : Bilingual Journal of Environmental Psychology / Revista Biling{\"u}e de Psicolog{\´i}a Ambiental}, volume = {11}, journal = {PsyEcology : Bilingual Journal of Environmental Psychology / Revista Biling{\"u}e de Psicolog{\´i}a Ambiental}, number = {3}, publisher = {Taylor \& Francis}, issn = {2171-1976}, doi = {10.1080/21711976.2020.1782040}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-5034}, pages = {363 -- 396}, year = {2020}, abstract = {Nature experiences are important aspects in the development of children, with positive effects on the physical, mental and social level. Nature experience areas, that is, play areas with natural elements only, instead of constructed play elements, address the aim to support child development. This article analyses the effects of three nature experience areas in a metropolitan area, compared with three playgrounds serving as control areas. In a quasi-experimental design, behaviour observations on play behaviour and autonomy of children playing in either nature experience areas or control playgrounds were conducted in 2017. Results show that the play of children in the nature experience areas was more complex than that of those on the playground. The frequencies of children playing in nature experience areas are lower than on the playground. The autonomous behaviour, measured by social interactions, the involvement of adults and an autonomous mobility, shows a differentiated picture between the three areas. Natural experience areas could provide important aspects to support child developments, and improvements are being discussed.}, language = {en} } @article{VogelBoeneckeKlingetal.2022, author = {Vogel, Sebastian and B{\"o}necke, Eric and Kling, Charlotte and Kramer, Eckart and L{\"u}ck, Katrin and Philipp, Golo and R{\"u}hlmann, J{\"o}rg and Schr{\"o}ter, Ingmar and Gebbers, Robin}, title = {Direct prediction of site-specific lime requirement of arable fields using the base neutralizing capacity and a multi-sensor platform for on-the-go soil mapping}, series = {Precision Agriculture}, volume = {23}, journal = {Precision Agriculture}, number = {1}, publisher = {Springer US}, issn = {1385-2256}, doi = {10.1007/s11119-021-09830-x}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4140}, pages = {127 -- 149}, year = {2022}, abstract = {Liming agricultural fields is necessary for counteracting soil acidity and is one of the oldest operations in soil fertility management. However, the best management practice for liming in Germany only insufficiently considers within-field soil variability. Thus, a site-specific variable rate liming strategy was developed and tested on nine agricultural fields in a quaternary landscape of north-east Germany. It is based on the use of a proximal soil sensing module using potentiometric, geoelectric and optical sensors that have been found to be proxies for soil pH, texture and soil organic matter (SOM), which are the most relevant lime requirement (LR) affecting soil parameters. These were compared to laboratory LR analysis of reference soil samples using the soil's base neutralizing capacity (BNC). Sensor data fusion utilizing stepwise multi-variate linear regression (MLR) analysis was used to predict BNC-based LR (LRBNC) for each field. The MLR models achieved high adjusted R2 values between 0.70 and 0.91 and low RMSE values from 65 to 204 kg CaCO3 ha-1. In comparison to univariate modeling, MLR models improved prediction by 3 to 27\% with 9\% improvement on average. The relative importance of covariates in the field-specific prediction models were quantified by computing standardized regression coefficients (SRC). The importance of covariates varied between fields, which emphasizes the necessity of a field-specific calibration of proximal sensor data. However, soil pH was the most important parameter for LR determination of the soils studied. Geostatistical semivariance analysis revealed differences between fields in the spatial variability of LRBNC. The sill-to-range ratio (SRR) was used to quantify and compare spatial LRBNC variability of the nine test fields. Finally, high resolution LR maps were generated. The BNC-based LR method also produces negative LR values for soil samples with pH values above which lime is required. Hence, the LR maps additionally provide an estimate on the quantity of chemically acidifying fertilizers that can be applied to obtain an optimal soil pH value.}, language = {en} } @article{SabatiniBluhmKunetal.2021, author = {Sabatini, Francesco Maria and Bluhm, Hendrik and Kun, Zoltan and Aksenov, Dmitry and Atauri, Jos{\´e} A. and Buchwald, Erik and Burrascano, Sabina and Cateau, Eug{\´e}nie and Diku, Abdulla and Duarte, In{\^e}s Marques and Fern{\´a}ndez L{\´o}pez, {\´A}ngel B. and Garbarino, Matteo and Grigoriadis, Nikolaos and Horv{\´a}th, Ferenc and Keren, Srđan and Kitenberga, Mara and Kiš, Alen and Kraut, Ann and Ibisch, Pierre L. and Larrieu, Laurent and Lombardi, Fabio and Matovic, Bratislav and Melu, Radu Nicolae and Meyer, Peter and Midteng, Rein and Mikac, Stjepan and Mikol{\´a}š, Martin and Mozgeris, Gintautas and Panayotov, Momchil and Pisek, Rok and Nunes, Le{\´o}nia and Ruete, Alejandro and Schickhofer, Matthias and Simovski, Bojan and Stillhard, Jonas and Stojanovic, Dejan and Szwagrzyk, Jerzy and Tikkanen, Olli-Pekka and Toromani, Elvin and Volosyanchuk, Roman and Vrška, Tom{\´a}š and Waldherr, Marcus and Yermokhin, Maxim and Zlatanov, Tzvetan and Zagidullina, Asiya and Kuemmerle, Tobias}, title = {European primary forest database v2.0}, series = {Scientific Data}, volume = {8}, journal = {Scientific Data}, publisher = {Nature Publishing Group UK}, issn = {2052-4463}, doi = {10.1038/s41597-021-00988-7}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4173}, pages = {14}, year = {2021}, abstract = {Primary forests, defined here as forests where the signs of human impacts, if any, are strongly blurred due to decades without forest management, are scarce in Europe and continue to disappear. Despite these losses, we know little about where these forests occur. Here, we present a comprehensive geodatabase and map of Europe's known primary forests. Our geodatabase harmonizes 48 different, mostly field-based datasets of primary forests, and contains 18,411 individual patches (41.1 Mha) spread across 33 countries. When available, we provide information on each patch (name, location, naturalness, extent and dominant tree species) and the surrounding landscape (biogeographical regions, protection status, potential natural vegetation, current forest extent). Using Landsat satellite-image time series (1985-2018) we checked each patch for possible disturbance events since primary forests were identified, resulting in 94\% of patches free of significant disturbances in the last 30 years. Although knowledge gaps remain, ours is the most comprehensive dataset on primary forests in Europe, and will be useful for ecological studies, and conservation planning to safeguard these unique forests.}, language = {en} } @article{SpiesZuberiMaehlisetal.2022, author = {Spies, Michael and Zuberi, Mehwish and M{\"a}hlis, Madlen and Zakirova, Aksana and Alff, Henryk and Raab, Christoph}, title = {Towards a participatory systems approach to managing complex bioeconomy interventions in the agrarian sector}, series = {Sustainable Production and Consumption}, journal = {Sustainable Production and Consumption}, number = {31}, publisher = {Elsevier}, issn = {2352-5509}, doi = {10.1016/j.spc.2022.03.020}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4205}, pages = {557 -- 568}, year = {2022}, abstract = {Calls for a "sustainable bioeconomy" have recently begun to proliferate in academic and political circles as an answer to global challenges such as the rapidly increasing world population and changing environmental conditions due to climate change. To build economies that rely on various sources of biomass rather than on fossil-based resources, bioeconomy policies highlight a need to explore ways in which productivity in agriculture can be increased. While the focus on productivity growth has largely been inspired by technology optimism and modernisation thinking, the local knowledge of farmers and other rural stakeholders - as a means of contributing to socially and ecologically more sustainable bioeconomy pathways - has frequently been sidelined. This perspective article proposes and discusses a participatory approach to strategy formulation and evaluation in agricultural transformation and bioeconomy development that is based on the methodological toolbox MARISCO (Adaptive MAnagement of vulnerability and RISk at COnservation sites). By offering a means of developing a comprehensive knowledge map, bringing together both insights and perspectives from diverse local stakeholders, this approach enables a systemic evaluation of the social and ecological effects of intervention strategies on the ground. The article outlines the benefits - and challenges - of such a systemic and participatory approach and briefly sketches how the results can be utilised in more sustainable governance processes in the development of bioeconomy strategies. We conclude that our adapted MARISCO methodology offers a viable tool to make more visible the perspectives and knowledge of biomass producers for policymakers and to contribute to a much-needed discursive shift in bioeconomy debates towards more holistic and inclusive perspectives.}, language = {en} } @article{BraunBitschHaering2022, author = {Braun, Charis Linda and Bitsch, Vera and H{\"a}ring, Anna Maria}, title = {Developing agri-food value chains: learning networks between exploration and exploitation}, series = {The Journal of Agricultural Education and Extension}, journal = {The Journal of Agricultural Education and Extension}, publisher = {Taylor \& Francis}, issn = {1389-224X}, doi = {10.1080/1389224X.2022.2082499}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4700}, pages = {22}, year = {2022}, abstract = {Purpose The present study explores the development of agri-food value chains from an organizational learning perspective, using the German organic food sector as an example. We illustrate how the development of local value chains unfolds over time and outline how facilitation can support this process. Design/methodology/approach The study used an action research design to facilitate change in practice and to create new knowledge. Data were collected through qualitative interviews, participant observation, and documentation of workshops and other learning activities. Data analysis and conceptualization followed a grounded theory approach. Findings The development process of value chains occurs in three phases, from joint exploration of the problem, through a phase of experimentation and implementation, to further cultivation of established collaborations among value chain actors. The development process oscillates between intra- and inter-organizational learning as well as explorative and exploitative activities. Practical implications The results of this study can help to understand and to further professionalize the practice of value chain development and provide guidance for facilitators and other stakeholder working in this field. Theoretical implications By drawing on the theory of exploration and exploitation, the study enhances the understanding of value chains collaboration in an inter-organizational setting. The study conceptualizes the development of agri-food value chains and the role of facilitators in the process. Originality/value There is little research to date that considers the development of value chains as a collaborative learning process. The presented grounded theory of local value chain development may inform further research on the transition towards a more sustainable agri-food system.}, language = {en} } @article{BehrendtPeterSterlyetal.2022, author = {Behrendt, Gerlinde and Peter, Sarah and Sterly, Simone and H{\"a}ring, Anna Maria}, title = {Community financing for sustainable food and farming: a proximity perspective}, series = {Agriculture and Human Values}, volume = {39}, journal = {Agriculture and Human Values}, number = {3}, publisher = {Springer Nature}, doi = {10.1007/s10460-022-10304-7}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4711}, pages = {1063 -- 1075}, year = {2022}, abstract = {An increasing number of small and medium-sized enterprises (SMEs) in the German organic agri-food sector involves citizens through different community financing models. While such models provide alternative funding sources as well as marketing opportunities to SMEs, they allow private investors to combine their financial and ethical concerns by directly supporting the development of a more sustainable food system. Due to the low level of financial intermediation, community financing is characterized by close relations between investors and investees. Against this background, we apply the proximity concept from economic geography to explore spatial and relational aspects of community financing in the German organic agri-food sector. Based on a qualitative multiple case study approach, we find that the relevance of proximity is twofold. While different forms of proximity between SMEs and their potential investors are key success factors, proximity is also considered as one desired outcome of community financing. Furthermore, our results reveal that the extent to which SMEs rely on particular proximity dimensions distinguishes two different approaches to community financing.}, language = {en} } @article{BehrendtvonMuenchhausenHaering2023, author = {Behrendt, Gerlinde and von M{\"u}nchhausen, Susanne and H{\"a}ring, Anna Maria}, title = {How to fund learning and innovation networks for sustainable agriculture: a conceptual framework}, series = {The Journal of Agricultural Education and Extension}, journal = {The Journal of Agricultural Education and Extension}, publisher = {Taylor \& Francis}, issn = {1389-224X}, doi = {10.1080/1389224X.2023.2179085}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4724}, year = {2023}, abstract = {Purpose Learning and innovation networks for sustainable agriculture (LINSA) are considered drivers of innovation towards a more sustainable agri-food system. However, sustaining long-term funding remains a challenge for many networks. This paper aims to provide a comprehensive conceptualization of how funding relates to LINSA continuation and suggests a classification of relevant funding instruments. Design/Methodology/Approach Being purely conceptual, this paper combines perspectives of strategic management and nonprofit finance with empirical insights from innovation network literature to develop a conceptual framework on LINSA funding. Findings The conceptual framework suggests that thriving LINSA require both an appropriate funding mix, which corresponds with the benefits provided, and an anticipatory utilization of financial resources to build and maintain relevant intangible resources. The availability of funding instruments which incorporate these findings is crucial for successful LINSA. Practical Implications The conceptual framework provides guidance to practitioners and policy makers who reflect on appropriate strategies and instruments for LINSA funding. Theoretical Implications By integrating perspectives from different disciplines, namely the resource-based view and the benefits theory of nonprofit finance, this paper contributes to an increased understanding of funding in network organizations. Originality/Value This is the first paper to offer an explicit conceptualization of how funding relates to LINSA development. It also provides a classification of relevant funding instruments.}, language = {en} } @article{MannLoftHernandezMorcillo2021, author = {Mann, Carsten and Loft, Lasse and Hern{\´a}ndez-Morcillo, M{\´o}nica}, title = {Assessing forest governance innovations in Europe: Needs, challenges and ways forward for sustainable forest ecosystem service provision}, series = {Ecosystem Services}, journal = {Ecosystem Services}, number = {52}, publisher = {Elsevier}, issn = {2212-0416}, doi = {10.1016/j.ecoser.2021.101384}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4731}, year = {2021}, abstract = {This Special Issue provides insights into conceptual approaches, methodological procedures and practice findings for the development and assessment of governance innovations for the sustainable provision of forest ecosystem services (FES) in Europe. We depart from the observation that the sustainable and balanced provision of FES requires novel policy, management and business approaches that need to overcome challenges in order to emerge, develop and flourish. These challenges are rooted in the diversity of forest ecosystems and institutional contexts, a lack of system understanding, of innovation dynamics, the public good character of many FES, and a production-oriented reference frame for forest management. We use a set of good governance innovation practices in form of new actor alliances and payment schemes as a basis for assessment and learning how to promote different kinds or bundles of FES. The contributing authors of the SI combine several methodological approaches to understand the working conditions of such innovations, including integrated mapping, stakeholder and governance analysis, and a forward-looking scenario approach for innovation assessment. Applying multi-methods and multi-actor approaches fruitfully orchestrated a constructive debate among stakeholders on the chances and challenges of governance innovations in Europe, to allow for their uptake in forest policy, business and practice.}, language = {en} } @article{MaierHebermehlGrossmannetal.2021, author = {Maier, Carolin and Hebermehl, Wiebke and Grossmann, Carol M. and Loft, Lasse and Mann, Carsten and Hern{\´a}ndez-Morcillo, M{\´o}nica}, title = {Innovations for securing forest ecosystem service provision in Europe - A systematic literature review}, series = {Ecosystem Services}, journal = {Ecosystem Services}, publisher = {Elsevier}, issn = {2212-0416}, doi = {10.1016/j.ecoser.2021.101374}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4741}, pages = {13}, year = {2021}, abstract = {Forest ecosystems provide a range of goods and services that are essential to human well-being. Yet global environmental problems, increasing urbanization, industrialization pressures, and dominant market mechanisms put into jeopardy the long term sustainable provision of forest ecosystem services (FES). Markets tend to favor private goods, such as timber, and are typically less able to provide sustainable financing mechanisms for public goods and services, such as carbon storage, biodiversity conservation or recreational value. European forest owners and policy makers alike are looking for governance innovations that generate economic opportunity while ensuring the future provision of FES. This systematic literature review aims to consolidate existing academic empirical research on local or regional level governance innovations in Europe concerned with generating forest-based revenue through FES provision. Thus, it complements conceptual literature dealing with challenges and opportunities of financing the provision of FES. When conducting the review we followed the process guidelines developed by 'Collaboration for Environmental Evidence' (Collaboration for Environmental Evidence, 2018). Out of a total of 3962 scanned papers, 23 papers containing 48 case studies were identified and analyzed in detail, to address the following guiding questions: (1) What types of FES related (governance) innovations for forest-based revenue generation exist and which FES do they address? (2) What are the motivations driving innovation development? (3) What are the implications for forest management? We found four types of governance innovations: forest product and organizational innovations which largely relate to provisioning FES; service innovations, which generally relate to cultural FES; and financial incentive systems or payment schemes targeting mostly regulating services. We identify potential synergies between two high-priority EU policy objectives: rural economic development and securing future FES provision. Currently, governance innovations' forest management implications and associated impact on (future) FES provision are rarely addressed in this literature. We recommend future policy and research to give greater consideration to the interdependencies between securing a range of FES, (rural) economic development, and forest management, to realize potential synergies.}, language = {en} } @article{MannLoftHernandezMorcilloetal.2022, author = {Mann, Carsten and Loft, Lasse and Hern{\´a}ndez-Morcillo, M{\´o}nica and Primmer, Eeva and Bussola, Francesca and Falco, Enzo and Geneletti, Davide and Dobrowolska, Ewelina and Grossmann, Carol M. and Bottaro, Giorgia and Schleyer, Christian and Kluvankova, Tatiana and Garcia, Gino and Lovrić, Marko and Torralba, Mario and Plieninger, Tobias and Winkel, Georg}, title = {Governance Innovations for forest ecosystem service provision - Insights from an EU-wide survey}, series = {Environmental Science \& Policy}, journal = {Environmental Science \& Policy}, number = {132}, publisher = {Elsevier}, issn = {1462-9011}, doi = {10.1016/j.envsci.2022.02.032}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4758}, pages = {282 -- 295}, year = {2022}, abstract = {This paper analyses the occurrence of governance innovations for forest ecosystem service (FES) provision in the forestry sector in Europe and the factors that influence innovation development. Based on a European-wide online survey, public and private forest owners and managers representing different property sizes indicate what type of governance innovation activities they engage in, and why. To investigate forestry innovations as systems, the analysis focuses on biophysical, social and technical factors influencing innovation development. The results of our exploratory quantitative analysis show that most innovation activities identified are largely oriented towards biomass production. Accordingly, most forest owners implement efficiency-driven optimisation strategies for forest management and technological improvement for provisioning service supply, to generate income. In contrast, the provision of regulating and cultural services is not yet a prominent part of forestry innovation activities.Reasons are rooted in a market-oriented economic rationale focusing on timber production, a lack of financial resources to compensate for other FES provisions or institutions to provide backup and security to forest owners and managers for engaging in innovation development. Given that the provision of a wide range of FES is a politically well-established objective for forest management in Europe, a strategy is needed that helps to align actors and sectors for supporting and co-financing related forest management approaches and business models. The current revision of the forest related policy framework on EU level under the EU Green deal poses a window of opportunity for better fostering novel governance approaches for more sustainable FES provision.}, language = {en} } @article{HernandezMorcilloTorralbaBaigesetal.2022, author = {Hern{\´a}ndez-Morcillo, M{\´o}nica and Torralba, M. and Baiges, T. and Bernasconi, A. and Bottaro, G. and Brogaard, S. and Bussola, F. and D{\´i}az-Varela, E. and Geneletti, D. and Grossmann, C. M. and Kister, J. and Klingler, M. and Loft, L. and Lovric, M. and Mann, C. and Pipart, N. and Roces-D{\´i}az, J. V. and Sorge, S. and Tiebel, M. and Tyrv{\"a}inen, L. and Varela, E. and Winkel, G. and Plieninger, T.}, title = {Scanning the solutions for the sustainable supply of forest ecosystem services in Europe}, series = {Sustainability Science}, volume = {17}, journal = {Sustainability Science}, number = {5}, publisher = {Springer Nature}, issn = {1862-4065}, doi = {10.1007/s11625-022-01111-4}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4764}, pages = {2013 -- 2029}, year = {2022}, abstract = {Forests are key components of European multifunctional landscapes and supply numerous forest ecosystem services (FES) fundamental to human well-being. The sustainable provision of FES has the potential to provide responses to major societal challenges, such as climate change, biodiversity loss, or rural development. To identify suitable strategies for the future sustenance of FES, we performed a solution scanning exercise with a group of transdisciplinary forest and FES experts from different European regions. We identified and prioritized fifteen major challenges hindering the balanced provision of multiple FES and identified a series of potential solutions to tackle each of them. The most prominent challenges referred to the increased frequency and impacts of extreme weather events and the normative mindset regarding forest management. The respective solutions pointed to the promotion of forest resilience via climate-smart forestry and mainstreaming FES-oriented management through a threefold strategy focusing on education, awareness raising, and networking. In a subsequent survey, most solutions were assessed as highly effective, transferable, monitorable, and with potential for being economically efficient. The implementation of the solutions could have synergistic effects when applying the notion of leverage points. Seven emerging pathways towards the sustainable supply of FES have been identified. These pathways build on each other and are organized based on their potential for transformation: (1) shifting forest management paradigms towards pluralistic ecosystem valuation; (2) using integrated landscape approaches; (3) increasing forest resilience; (4) coordinating actions between forest-related actors; (5) increasing participation in forest planning and management; (6) continuous, open, and transparent knowledge integration; and (7) using incentive-based instruments to support regulating and cultural FES. These pathways can contribute to the implementation of the new EU Forestry Strategy to support the balanced supply of multiple FES.}, language = {en} } @article{SorgeMannSchleyeretal.2022, author = {Sorge, Stefan and Mann, Carsten and Schleyer, Christian and Loft, Lasse and Spacek, Martin and Hern{\´a}ndez-Morcillo, M{\´o}nica and Kluvankova, Tatiana}, title = {Understanding dynamics of forest ecosystem services governance: A socio-ecological-technical-analytical framework}, series = {Ecosystem Services}, journal = {Ecosystem Services}, number = {55}, publisher = {Elsevier}, issn = {2212-0416}, doi = {10.1016/j.ecoser.2022.101427}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4771}, year = {2022}, abstract = {Little is known about the emergence and development of novel governance approaches for forest ecosystem services provision, what drives them, and how they can be fostered. Existing frameworks often deal with single aspects of resource management and thus fail to assess processes, multi-level influences, and interacting dimensions and factors in a system-based understanding. In this article, we introduce the conceptual foundation and an empirical application of an adapted Social-Ecological System framework with additional elements that builds on the idea of complex and interlinked social-ecological-technical-forestry-innovation systems that allows for the identification of key factors for revealing forest ecosystem services dynamics to understand the emergence and development of such governance innovations. The development and testing of the framework was based on six case studies for knowledge co-creation. To showcase its application, two governance innovations were examined: a voluntary carbon market payment scheme in Germany and a network approach for forest-pasture management in Italy. The application of the framework reveals required adaptations to improve innovation by systematically unpacking the system dimensions and identifying fostering and hindering factors and their interdependencies. We highlight the output of a sound system-based information basis that allows for purposeful innovation conditioning by policy makers, practitioners, and other related actors.}, language = {en} } @article{AngelstamAsplundBastianetal.2021, author = {Angelstam, Per K. and Asplund, Brita and Bastian, Olaf and Engelmark, Ola and Fedoriak, Mariia and Grunewald, Karsten and Ibisch, Pierre L. and Lindvall, Per and Manton, Michael and Nilsson, Magnus and Nilsson, Sten B. and Roberntz, Peter and Shkaruba, Anton and Skoog, Per and Soloviy, Ihor and Svoboda, Miroslav and Teplyakov, Victor and Tivell, Anders and Westholm, Erik and Zhuk, Alina and {\"O}ster, Leif}, title = {Tradition as asset or burden for transitions from forests as cropping systems to multifunctional forest landscapes: Sweden as a case study}, series = {Forest Ecology and Management}, journal = {Forest Ecology and Management}, number = {505}, publisher = {Elsevier}, issn = {0378-1127}, doi = {10.1016/j.foreco.2021.119895}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4789}, pages = {17}, year = {2021}, abstract = {Expectations of what forests and woodlands should provide vary among locations, stakeholder groups, and over time. Developing multifunctional forests requires understanding of the dynamic roles of traditions and cultural legacies in social-ecological systems at multiple levels and scales. Implementing policies about multifunctional forests requires a landscape and social-ecological perspective, and recognition of both spatial and temporal features at multiple scales. This study explores the dissemination of even-aged silviculture in central, eastern and northern Europe, and the consequences of choosing different vantage points in social-ecological systems for mapping of barriers, and to identify levers, towards multifunctional forest landscapes. Using a narrative approach, we first summarise the development of even-aged silviculture in four European regions. Next, we focus on Sweden as a keen adopter of even-aged silviculture, and identify levers at three groups of vantage points. They were (1) biosphere with biodiversity as short-hand for composition, structure and function of ecosystems, which support human well-being at multiple scales; (2) society in terms of different levels of stakeholder interactions from local to global, and (3) economy represented by value chain hierarchies and currencies. The emergence of even-aged silviculture >200 years ago formed an expanding frontier from central to northern Europe. Sustained yield wood production and biodiversity conservation encompass different portfolios of ecosystem aspects and spatio-temporal scales. Ignorance and lack of knowledge about these differences enforce their mutual rivalry. An exploratory review of six groups of stakeholders at multiple levels in the traditional industrial forest value chain highlights inequalities in terms of distribution of income and power across different levels of governance. This effectively marginalises other than powerful industrial actors. The distribution of financial results along the value chain is dynamic in space and time, and not all benefits of forest ecosystems can be measured using monetary valuation. There are also other currencies and incentives. A discussion of cultural trajectories in central and eastern European, Russian and Swedish forest management illustrates that forest history patterns repeat themselves. Longitudinal case studies of countries and regions can help foster holistic multi-dimensional and multi-level systems thinking. Application of deep levers of change is likely to require external drivers. A key challenge is to handle the manufacturing of doubt and decay of truth, i.e., the appearance of alternative facts, and the diminishing role of evidence and systems analyses in political and civic discourses. This transition is fuelled by new and rapidly evolving digital arenas.}, language = {en} } @inproceedings{deMiguelDiezTolosanaEstebanCremer2021, author = {de Miguel-D{\´i}ez, Felipe and Tolosana-Esteban, Eduardo and Cremer, Tobias}, title = {3D-Simulation of Wood Stacks to Analyze the Influence of Log Properties on Stack Volume}, series = {Environmental Sciences Proceeding}, booktitle = {Environmental Sciences Proceeding}, number = {3(1)}, publisher = {MDPI}, issn = {2673-4931}, doi = {10.3390/IECF2020-08063}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4452}, pages = {6}, year = {2021}, abstract = {The quantification of the solid wood content in a wood stack has been an object of investigation since the 18th century. Particularly, the log parameters exert a considerable influence on the volume of the stack, such as (1) the log midpoint diameter, (2) average bark thickness, (3) crookedness, and (4) log taper. Although many of these parameters have already been studied and some are already considered in many countries when measuring wood stacks, their influence has not been analyzed individually so far since a broad statistical database is needed and the data collection is very costly. Consequently, a 3D-simulation model was developed based on a cross-platform game engine. This model generates virtual wood stacks based on a data set of logs which are defined by the user. The simulation of a stack can be done in a few seconds only and each stack generated can be visualized once all iterations are done. The simulation results are the stacked cubic volume, solid wood cubic volume, and the respective conversion factors. The model, fed with both real data and user-defined data, allows for a detailed analysis of the effect of each parameter on the results, as the user can vary their values discretionary. To obtain the first results from real data, 1000 logs of Scots pine (Pinus sylvestris L.) were measured. The first simulations based on these data show reliable results and it is possible to quantify the influence of the proportion of crooked wood in a pile on the stack volume and the conversion factor. In addition, the results are highly in line with the real trials that have already been performed in parallel. A further scientific evaluation and statistical analysis will be done in a second study phase. However, the model already provides a reasonable tool that is easy to apply for the forest and wood industry in order to make the most accurate estimate possible of the solid wood content in a wood pile.}, language = {en} } @inproceedings{deMiguelDiezRederWalloretal.2021, author = {de Miguel-D{\´i}ez, Felipe and Reder, Stefan and Wallor, Evelyn and Bahr, Henrik and Mund, Jan-Peter and Cremer, Tobias}, title = {Long Range and High-Speed Personal Laser Scanning (PLS) and Simultaneous Localization and Mapping (SLAM) Technology in Roundwood Measurement}, series = {Proceedings of the SilviLaser Conference 2021}, booktitle = {Proceedings of the SilviLaser Conference 2021}, doi = {10.34726/wim.1929}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4462}, pages = {3}, year = {2021}, language = {en} } @article{deMiguelDiezGuiguePettenkoferetal.2022, author = {de Miguel-D{\´i}ez, Felipe and Guigue, Phillippe and Pettenkofer, Tim and Tolosana-Esteban, Eduardo and Purf{\"u}rst, Thomas and Cremer, Tobias}, title = {Development and evaluation of a novel 3D simulation software for modelling wood stacks}, series = {PLoS ONE}, journal = {PLoS ONE}, number = {17(3)}, issn = {1932-6203}, doi = {10.1371/journal.pone.0264414}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4472}, pages = {17}, year = {2022}, abstract = {Assessing the solid wood content is crucial when acquiring stacked roundwood. A frequently used method for this is to multiply determined conversion factors by the measured gross volume. However, the conversion factors are influenced by several log and stack parameters. Although these parameters have been identified and studied, their individual influence has not yet been analyzed using a broad statistical basis. This is due to the considerable financial resources that the data collection entails. To overcome this shortcoming, a 3D-simulation model was developed. It generates virtual wood stacks of randomized composition based on one individual data set of logs, which may be real or defined by the user. In this study, the development and evaluation of the simulation model are presented. The model was evaluated by conducting a sensitivity and a quantitative analysis of the simulation outcomes based on real measurements of 405 logs of Norway spruce and 20 stacks constituted with these. The results of the simulation outcomes revealed a small overestimation of the net volume of real stacks: by 1.2\% for net volume over bark and by 3.2\% for net volume under bark. Furthermore, according to the calculated mean bias error (MBE), the model underestimates the gross volume by 0.02\%. In addition, the results of the sensitivity analysis confirmed the capability of the model to adequately consider variations in the input parameters and to provide reliable outcomes.}, language = {en} } @article{deMiguelDiezPettenkoferWalloretal.2022, author = {de Miguel-D{\´i}ez, Felipe and Pettenkofer, Tim and Wallor, Evelyn and Tolosana-Esteban, Eduardo and Purf{\"u}rst, Thomas and Cremer, Tobias}, title = {Influence of log and stack parameters on the conversion factors for Norway Spruce wood stacks using a 3D simulation model}, series = {International Journal of Forest Engineering}, volume = {33}, journal = {International Journal of Forest Engineering}, number = {2}, publisher = {Taylor \& Francis}, issn = {1494-2119}, doi = {10.1080/14942119.2022.2038023}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4482}, pages = {119 -- 128}, year = {2022}, abstract = {One method for estimating the solid wood content in a stack involves using conversion factors and multiplying these by the measured gross volume. The conversion factors can vary depending on several log and stack parameters. The aim of this study was to analyze eleven parameters using a 3D simulation model based on 541 measured logs of Norway spruce. To this end, 50 data sets were created from measured logs, where the parameters of interest in this study (e.g., length, crookedness, taper …) were classified according to different ranges. After that, 64 runs of simulations were carried out. In each simulation run, 150 stacks were modeled. The simulation results were compared with previous studies and with the measurement guidelines of several countries. This analysis revealed that the parameters midpoint diameter, length, crookedness, delimbing quality and the proportion of moderately and highly crooked logs in a stack have a considerable influence on the conversion factors. Taper, proportion of butt logs in a stack and stack height have a modest effect as do the proportion of tapered and crooked logs for low and high taper and low crookedness. In contrast, ovality and the proportion of logs stacked in opposite directions have a marginal influence on the conversion factors. Based on findings from these analyses, the current measurement guidelines of different countries can now be adapted to achieve a higher degree of accuracy.}, language = {en} } @article{deMiguelDiezRederWalloretal.2022, author = {de Miguel-D{\´i}ez, Felipe and Reder, Stefan and Wallor, Evelyn and Bahr, Henrik and Blasko, Lubomir and Mund, Jan-Peter and Cremer, Tobias}, title = {Further application of using a personal laser scanner and simultaneous localization and mapping technology to estimate the log's volume and its comparison with traditional methods}, series = {International Journal of Applied Earth Observation and Geoinformation}, journal = {International Journal of Applied Earth Observation and Geoinformation}, number = {109}, publisher = {Elsevier}, issn = {1872-826X}, doi = {10.1016/j.jag.2022.102779}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4496}, pages = {7}, year = {2022}, abstract = {The aim of this study was the development of a methodical processing line for estimating the log's volume from scanning logs using a long-range high-speed personal laser scanner (PLS) GeoSLAM ZEB HORIZON and simultaneous localization and mapping (SLAM) technology in an open-source software framework of Cloud Compare. Additionally, the accuracy and precision of using PLS and the suggested method when measuring roundwood volume was examined compared to measurements made using a xylometer and estimations obtained from applying the formulae of Huber, Smalian and Newton. For this purpose, several parameters were measured in 50 logs of Norway spruce with an average length of 2.53 m and a mean diameter of 19.97 cm. Afterwards, the volume of these 50 logs was measured with a xylometer. The results of these measurements served as reference values. The same 50 logs were subsequently scanned with the PLS. The scans were converted into point clouds and were analyzed in Cloud Compare to estimate the volume of the scanned logs. Next, the root mean square error (RMSE) and the mean bias error (MBE) as well as their relative values were calculated for the volumes determined in Cloud Compare and estimated with the above mentioned formulae. The calculated RMSE (and relative RMSE) determined a deviation of the logs' volumes estimated in Cloud Compare from the xylometric volumes of 2.88 dm3 (3.54\%) whereas the deviations of the log's volumes calculated applying the formulae of Huber, Smalian and Newton from the xylometric volumes were respectively 9.63 dm3 (11.83\%), 10.33 dm3 (12.69\%) and 4.69 dm3 (5.76\%). The calculated MBE (and relative MBE) showed that the estimated volumes in Cloud Compare and those using the formulae were overestimated, with the lowest overestimation of 0.10 dm3 (0.12\%) in Cloud Compare and the highest, 5.50 dm3 (6.75\%), using the Smalian formula. Therefore, it can be stated that results of suggested methodical processing line came closest to the logs' volumes obtained with the xylometer, i.e., they were more accurate and precise compared to the conventionally formulae for log's volume estimation. The implementation of this method has the potential filling a gap towards a wall-to-wall complete digitization of the roundwood commercialization and ensure transparency and acceptance between the stakeholders involved in the wood supply chain.}, language = {en} } @misc{SanneKampeLenzetal.2020, author = {Sanne, Moritz and Kampe, Anja and Lenz, Claudia and Gossel, Stefan and Wagner, Sabine and Haibel, Astrid and Melcher, Eckhard and Leu, Carsten and Pfriem, Alexander and Lautner, Silke}, title = {Introduction of shock wave technology to fir wood preservation}, series = {International Wood Products Journal}, volume = {12}, journal = {International Wood Products Journal}, number = {1}, publisher = {Taylor \& Francis}, issn = {2042-6445}, doi = {10.1080/20426445.2020.1838215}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4536}, pages = {3 -- 6}, year = {2020}, abstract = {Similar to a normal wave, a shock wave travels as energy through matter but it causes an abrupt rise of pressure, temperature and density. In this study, the influence of shock waves on wood structure were investigated in the light of possible future industrial utilization e.g. timber impregnating treatment. The constructed autoclave is capable of creating shock waves either by an electrical pulse breakdown of a spark gap arrangement or by electromagnetic actuators. The penetration depths of the fir wood test samples were measured using light microscopy, SEM and micro-computed tomography. Our results showed that by varying the intensity of the incident shock wave, the distance between the shock wave generating device and the test sample, and/or the orientation of test sample in relation to the shockwave, the wood tissue structure had been heavily disintegrated or hardly affected at all. An improvement on impregnation could not be found.}, language = {en} } @article{PopescuPfriem2020, author = {Popescu, Carmen-Mihaela and Pfriem, Alexander}, title = {Treatments and modification to improve the reaction to fire of wood and wood based products—An overview}, series = {Fire and Materials}, volume = {44}, journal = {Fire and Materials}, number = {1}, publisher = {Wiley}, issn = {0308-0501}, doi = {10.1002/fam.2779}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4541}, pages = {100 -- 111}, year = {2020}, abstract = {Wood and wood-based products are widely used for structural building elements, but due to their composition, they are susceptible of combusting if exposed to fire. Fire safety is an important issue of building safety, especially when the building's fire load contents enhance the risks of fire spread. Therefore, the involved materials are very important to address the fire safety requirements. When existing timber structures are involved, the most usual way to improve its reaction to fire is to treat wood with fire retardant materials. The idea of this paper is to give an overall overview, on the existing fire-retardant and intumescent coating materials, modification, and treatments that can be applied to wood and wood-based products in order to improve their reaction to fire.}, language = {en} } @article{CremerBlasko2017, author = {Cremer, Tobias and Blasko, Lubomir}, title = {Analyse der fotooptischen Vermessung von Kiefernstamm- und -industrieholz im Vergleich zum Sektionsraumaß}, series = {Allgemeine Forst- und Jagdzeitung}, volume = {188}, journal = {Allgemeine Forst- und Jagdzeitung}, number = {7/8}, publisher = {J. D. Sauerl{\"a}nder}, issn = {0002-5852}, doi = {10.23765/afjz0002008}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4551}, pages = {127 -- 139}, year = {2017}, language = {de} } @article{SanneMunierFoersteretal.2020, author = {Sanne, Moritz and Munier, Leo Felix and F{\"o}rster, Theresa and Dreyer, Christian and Pfriem, Alexander}, title = {Einfluss der Schlichte von Celluloseregeneratsfasern auf die Zugscherfestigkeit bei Holzverklebungen}, series = {Holztechnologie}, volume = {61}, journal = {Holztechnologie}, number = {5}, issn = {0018-3881}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4560}, pages = {38 -- 42}, year = {2020}, abstract = {Es wurden L{\"a}ngszugscherversuch an mit Celluloseregenaratfaser (CRF) verst{\"a}rktem Epoxidharz durchgef{\"u}hrt. Dabei wurden die Festigkeiten von CRF mit und ohne Schlichtemittel verglichen. Die dauerhafte Ausbildung eines stabilen Verbundes zwischen CRF und Epoxidharz ist weiterhin problematisch. Der Einsatz eines Schlichtemittels wirkt sich nicht auf die Verklebbarkeit der Fasern in der Matrix aus. Sowohl die Werte des Zugscherversuchs als auch die makroskopischen Bruchbilder und die mikroskopischen Analysen von Rissen in der Matrix zeigen keine nennenswerten Unterschiede zwischen beiden untersuchten Varianten.}, language = {de} } @article{FriedrichLuetjeFournetGengnageletal.2021, author = {Friedrich, Jan and L{\"u}tje-Fournet, Lucas and Gengnagel, Christoph and Pfriem, Alexander}, title = {Brandschutztechnische Ert{\"u}chtigung von Holzoberfl{\"a}chen durch Pyrolyse: Verbesserung der brandhemmenden Wirkung von pyrolysierten Fassadenh{\"o}lzern}, series = {Holztechnologie}, volume = {62}, journal = {Holztechnologie}, number = {2}, issn = {0018-3881}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4579}, pages = {23 -- 35}, year = {2021}, abstract = {Im Rahmen des Forschungsprojektes PyroForCE wurde untersucht, inwieweit sich das Brandverhalten von Fassadenh{\"o}lzern alleine durch die Erzeugung einer oberfl{\"a}chlichen Pyrolyseschicht so ver{\"a}ndern l{\"a}sst, dass dadurch die Anforderungen f{\"u}r eine Klassifizierung als schwerentflammbarer Baustoff dauerhaft erf{\"u}llt werden. Hierzu wurde eine kontinuierlich arbeitende Holzpyrolyseanlage entwickelt, mit der reproduzierbare Pyrolysefl{\"a}chen auf Pr{\"u}fk{\"o}rpern der Holzarten Eiche, L{\"a}rche und Fichte erzeugt werden konnten. Durch eine zus{\"a}tzliche Stabilisierung mit Natriumwasserglas lassen sich sowohl die oberfl{\"a}chliche Abriebfestigkeit erh{\"o}hen als auch die Brandschutzwirkung verbessern. So modifizierte Fassadenh{\"o}lzer k{\"o}nnen im Single-Burn-Item-Test eine Klassifikatione als "schwerentflammbares" Bauprodukt erreichen. Damit ist das Ziel erreicht, nur durch Oberfl{\"a}chenpyrolyse in VErbindung mit einer Stabilisierung durch rein mineralische Wassergl{\"a}ser das Brandverhalten von Fassadenh{\"o}lzern so zu ver{\"a}ndern, dass eine Zuordnung zu den schwerentflammbaren Baustoffen erreicht werden kann und diese damit als Fassadenmaterial im st{\"a}dtischen Kontext und der Geb{\"a}udeklasse 4 und 5 einsetzt werden d{\"u}rfen.}, language = {de} } @article{MensahAhiekporHeroldetal.2022, author = {Mensah, Isaac and Ahiekpor, Julius Cudjoe and Herold, Nadine and Bensah, Edem Cudjoe and Pfriem, Alexander and Antwi, Edward and Amponsem, Bright}, title = {Biomass and plastic co-pyrolysis for syngas production: Characterisation of Celtis mildbraedii sawdust as a potential feedstock}, series = {Scientific African}, journal = {Scientific African}, number = {16}, publisher = {Elsevier}, issn = {2468-2276}, doi = {10.1016/j.sciaf.2022.e01208}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4588}, pages = {9}, year = {2022}, abstract = {Celtis mildbraedii sawdust (CMS) from Ghana was characterised to investigate its suitability with polyethylene terephthalate (PET) for syngas production via co-pyrolysis. The physical and chemical properties assessed include proximate and ultimate compositions, pH value, higher heating value (HHV), and lignocellulosic composition. Also, the thermal behaviour at different heating rates (5, 10, and 20 K/min) and qualitative prediction of organic compounds of CMS were examined using thermogravimetric analysis (TG/DTG) and NIR spectroscopy techniques, respectively. Results of proximate analysis (moisture = 17.15 ± 0.0 wt.\%, ash = 1.13 ± 0.4 wt.\%, volatile matter = 68.39 ± 0.4 wt.\%, fixed carbon = 13.33 ± 0.8 wt.\%); ultimate analysis (C = 48.51 wt.\%, H = 6.66 wt.\%, N = 0.51 wt.\%, S = 0.02 wt.\%, O = 44.30 wt.\%); pH values (cold phase = 7.60, hot phase = 6.30); HHV (15.37 - 18.03 MJ/kg); and lignocellulosic composition (extractives = 13.80 ± 0.57 wt.\%, hemicellulose = 21.95 ± 3.89 wt.\%, lignin = 17.35 ± 0.35 wt.\%, cellulose = 46.90 ± 2.97 wt.\%) were obtained. The maximum mass loss was 83.48\% at 289.8 °C at 5 K/min. It was concluded that CMS is a highly potential biomass resource for syngas production with an empirical formula of CH1.64O0.69N0.009S0.0001.}, language = {en} } @article{WinklerKruegerSarnaghietal.2022, author = {Winkler, Christoph and Kr{\"u}ger, Robert and Sarnaghi, Ani Khaloian and Kluge, Patrick and van de Kuilen, Jan-Willem and Schwarz, Ulrich}, title = {Mechanische Eigenschaften von Sch{\"a}lfunierlagen in Sperrh{\"o}lzern}, series = {Holztechnologie}, journal = {Holztechnologie}, number = {1}, issn = {0018-3881}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4597}, pages = {25 -- 36}, year = {2022}, abstract = {In dieser Publikation wird der Frage nachgegangen, ob mit Klebstoff beschichtete Furniere gegen{\"u}ber nativen Furnieren geeigneter sind, um Kennwerte zur Berechnung und Simulation von Sperrh{\"o}lzern zu erhalten. Der Frage wurde mittels experimentellen Versuchen, analytischer Berechnung und Simulation nachgegangen und die Ergebnisse anhand von Buchenfurnier, teils beschichtet mit Phenol-Resorzin-Formaldehyd-Klebstoffen, dikutiert. Die Ergebnisse zeigen, dass beschichtete Furniere eine bessere {\"U}bereinstimmung mit BErechnungsans{\"a}tzen und Simulationen von Sperrh{\"o}lzern als native Furniere bieten und auch einem vereinfachten Ansatz eines Laminats aus Furnieren mit separaten Klebstoffschichten {\"u}berlegen sind.}, language = {de} } @article{WeissMichlerGillichetal.2022, author = {Weiss, Fabio and Michler, Frank Uwe and Gillich, Benjamin and Tillmann, J{\"o}rg and Ciuti, Simone and Heurich, Marco and Rieger, Siegfried}, title = {Displacement Effects of Conservation Grazing on Red Deer (Cervus elaphus) Spatial Behaviour}, series = {Environmental Management}, volume = {70}, journal = {Environmental Management}, publisher = {Springer Nature}, issn = {0364-152X}, doi = {10.1007/s00267-022-01697-6}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4609}, pages = {763 -- 779}, year = {2022}, abstract = {Conservation grazing uses semi-feral or domesticated herbivores to limit encroachment in open areas and to promote biodiversity. However, we are still unaware of its effects on wild herbivores. This study investigates the influence of herded sheep and goats on red deer (Cervus elaphus) spatial behavior by testing three a-priori hypotheses: (i) red deer are expected to avoid areas used by livestock, as well as adjacent areas, when livestock are present, albeit (ii) red deer increase the use of these areas when sheep and goats are temporarily absent and (iii) there is a time-lagged disruption in red deer spatial behavior when conservation grazing practice ends. Using GPS-telemetry data on red deer from a German heathland area, we modelled their use of areas grazed by sheep and goats, using mixed-effect logistic regression. Additionally, we developed seasonal resource selection functions (use-availability design) to depict habitat selection by red deer before, during, and after conservation grazing. Red deer used areas less during conservation grazing throughout all times of the day and there was no compensatory use during nighttime. This effect mostly persisted within 21 days after conservation grazing. Effects on habitat selection of red deer were detectable up to 3000 meters away from the conservation grazing sites, with no signs of either habituation or adaption. For the first time, we demonstrate that conservation grazing can affect the spatio-temporal behavior of wild herbivores. Our findings are relevant for optimizing landscape and wildlife management when conservation grazing is used in areas where wild herbivores are present.}, language = {en} } @inproceedings{BernhardGosselWill2022, author = {Bernhard, Miriam and Gossel, Britta M. and Will, Andreas}, title = {Der Zusammenhang zwischen der strategischen Technologieorientierung und dem organisationalen Lernen in Medienorganisationen}, series = {Internet-Intermedi{\"a}re und virtuelle Plattformen medien{\"o}konomisch betrachtet: Proceedings zur Jahrestagung der Fachgruppe Medien{\"o}konomie der Deutschen Gesellschaft f{\"u}r Publizistik- und Kommunikationswissenschaft 2021, Hamburg}, booktitle = {Internet-Intermedi{\"a}re und virtuelle Plattformen medien{\"o}konomisch betrachtet: Proceedings zur Jahrestagung der Fachgruppe Medien{\"o}konomie der Deutschen Gesellschaft f{\"u}r Publizistik- und Kommunikationswissenschaft 2021, Hamburg}, editor = {Deutsche Gesellschaft f{\"u}r Publizistik- und Kommunikationswissenschaft e.V.,}, doi = {10.21241/ssoar.78775.v2}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4615}, pages = {163 -- 176}, year = {2022}, abstract = {Zukunftstechnologien {\"u}ben schon seit geraumer Zeit Transformationsdruck auf Medienorganisationen aus (K{\"u}ng, 2008). Medienorganisationen sind daher gezwungen, gezielt zu reagieren, sich zu ver{\"a}ndern und zu lernen. Ein theoretisches Konstrukt, das diesen Prozess erkl{\"a}rt, ist die Theorie des organisationalen Lernens (OL) (Senge, 2006). In der allgemeinen Managementforschung ist OL bereits ein etablierter theoretische Ansatz (Dick, 2005), bei Medienorganisationen wurde OL bislang kaum erforscht (Bernhard \& Will, 2021). Die strategische Orientierung der Organisation stellt eine M{\"o}glichkeit zur F{\"o}rderung des OL dar (Se{\c{c}}kin-Hala{\c{c}}, 2019). Insbesondere die strategische Technologieorientierung (TO) k{\"o}nnte in Anbetracht von Zukunftstechnologien hilfreich f{\"u}r OL sein (ebd.). Vor diesem Hintergrund besch{\"a}ftigt sich dieser Beitrag mit der folgenden Frage: Besteht ein Zusammenhang zwischen der Technologieorientierung (TO) und dem organisationalen Lernen (OL) in Medienorganisationen? Zur Beantwortung dieser Frage wurde eine explorative Onlineumfrage (Zeitraum: Dez. 2020 bis Jan. 2021) unter deutschen Medienmanager*innen (N=46) durchgef{\"u}hrt. F{\"u}r die Untersuchung wurden die Instrumente von Hakala \& Kohtam{\"a}ki (2011) f{\"u}r die TO und von Marsick \& Watkins (2003) f{\"u}r das OL {\"u}bernommen. Die Umfragedaten wurden mithilfe der Rangkorrelation nach Spearman analysiert. Kernergebnis der Untersuchung ist, dass ein signifikanter Zusammenhang zwischen TO und OL besteht.}, language = {de} } @article{Gossel2022, author = {Gossel, Britta M.}, title = {Analogies in Entrepreneurial Communication and Strategic Communication: Definition, Delimitation of Research Programs and Future Research}, series = {International Journal of Strategic Communication}, volume = {16}, journal = {International Journal of Strategic Communication}, number = {2}, publisher = {Taylor \& Francis}, issn = {1553-118X}, doi = {10.1080/1553118X.2021.2015689}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4659}, pages = {134 -- 156}, year = {2022}, abstract = {This article aims to build a better understanding of entrepreneurial communication and strategic communication. The term entrepreneurial is finding its way into the discussion of communication science in general and strategic communication in particular, for example, through the consideration of startups. So far, the term entrepreneurial communication remains vague, is hardly defined and is not systematically distinguished from strategic communication. By applying an analogies lens in the context of problematizing, differences between the terms entrepreneurial and strategic in entrepreneurial communication and strategic communication are explored based on selected given definitions. As a result, three unifying dimensions - development stage, mode, and logic - are developed to highlight fundamental differences between the two terms. To create potential for a future creation of entrepreneurial communication as research program, and to elaborate on future potential for strategic communication in relation to this, central theoretical approaches in entrepreneurship research and their potential to research entrepreneurial communication are explored.}, language = {en} } @article{Gossel2022, author = {Gossel, Britta M.}, title = {Entrepreneurial Journalism. Grenzen und grenz{\"u}berschreitende Potentiale}, series = {Communicatio Socialis (ComSoc)}, volume = {55}, journal = {Communicatio Socialis (ComSoc)}, number = {1}, publisher = {Nomos}, issn = {0010-3497}, doi = {10.5771/0010-3497-2022-1}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4683}, pages = {33 -- 43}, year = {2022}, language = {en} } @article{KochIbischBloch2022, author = {Koch, Olef and Ibisch, Pierre L. and Bloch, Ralf}, title = {Climate change and shifting land-use: Consequences for smallholder agroforestry systems and rural livelihoods in the southwest Ethiopian Highlands}, series = {Agroecology and Sustainable Food Systems}, volume = {46}, journal = {Agroecology and Sustainable Food Systems}, number = {5}, publisher = {Taylor \& Francis}, doi = {10.1080/21683565.2022.2067930}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4340}, pages = {672 -- 711}, year = {2022}, abstract = {Applying a Regional Integrated Vulnerability Assessment (RIVAS), this study aims to identify the local farming system characteristics of 54 smallholder agroforestry farms in Kafa Zone (Ethiopia), their climate change vulnerability, and how they are affected by current land-use changes. The study combines semi-structured interviews with a biophysical characterization of farm systems. The results show that the assessed farming systems' multifunctionality is essential to rural livelihoods while sustaining crop and tree diversity. While dry season crop diversity drives household's sufficiency and capacity to respond to crop failure, medium-low sufficiency of production in more than a third of the assessed systems, as well as soil degradation in cereal fields lessen adaptive capacity. For their contribution to climate resilience, diverse and perennial cropping regimes should be supported and maintained.}, language = {en} } @article{HofbauerBlochBachingeretal.2022, author = {Hofbauer, Michael and Bloch, Ralf and Bachinger, Johann and Gerke, Horst H.}, title = {Effects of shallow non-inversion tillage on sandy loam soil properties and winter rye yield in organic farming}, series = {Soil \& Tillage Research}, journal = {Soil \& Tillage Research}, number = {222}, publisher = {Elsevier}, issn = {0167-1987}, doi = {10.1016/j.still.2022.105435}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4354}, year = {2022}, abstract = {Due to an expected improvement of soil quality and soil water storage, the substitution of mouldboard ploughing by reduced tillage was identified as a potential climate change adaptation measure for organic farming in a relatively dry region with a humid continental climate. In a field trial on a sandy loam soil in eastern Germany, reduced tillage was carried out to 6 cm soil depth by means of a ring cutter and compared to mouldboard ploughing with 25 cm tillage depth. In the present study, the influence of ring cutter tillage on soil properties was investigated for the first time. The effects of shallow ring cutter tillage on soil physical parameters, soil organic matter distribution, soil mineral nitrogen content, total nitrogen uptake by the crop, root content, and grain yield of organically grown winter rye (Secale cereale L.) were analysed in the uppermost 20 cm of a sandy loam soil and compared to those of mouldboard ploughing. Under ring cutter tillage, soil bulk density was in 8-20 cm soil depth by up to 15\% higher than under mouldboard ploughing. In 9-15 cm soil depth, ring cutter tillage resulted in smaller contents of coarse macropores and mesopores, more micropores, and an 11\% smaller available water capacity compared to mouldboard ploughing. The total nitrogen uptake by winter rye was in the ring cutter treatment by up to 44\% smaller than in the mouldboard plough treatment. Root content was up to 209\% higher in 1-6 cm soil depth and up to 71\% smaller in 8-20 cm soil depth after ring cutter tillage than after mouldboard ploughing. Winter rye yield declined by 22-43\% in the ring cutter treatment relative to the mouldboard plough treatment. Shallow ring cutter tillage resulted in a root growth-restricting soil compaction in the non-tilled soil layers below 6 cm depth and led to a limitation of nitrogen mineralisation until spring. Both effects likely caused the considerable reduction of crop yield. The results suggest that shallow ring cutter tillage in organic farming seems to be not suitable for sandy loam soils as long as the risk of a soil compaction-induced limitation of root growth and nitrogen supply cannot be minimised.}, language = {en} } @article{DonatGeistertGrahmannetal.2022, author = {Donat, Marco and Geistert, Jonas and Grahmann, Kathrin and Bloch, Ralf and Bellingrath-Kimura, Sonoko D.}, title = {Patch cropping- a new methodological approach to determine new field arrangements that increase the multifunctionality of agricultural landscapes}, series = {Computers and Electronics in Agriculture}, journal = {Computers and Electronics in Agriculture}, number = {197}, publisher = {Elsevier}, issn = {0168-1699}, doi = {10.1016/j.compag.2022.106894}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4365}, pages = {1 -- 15}, year = {2022}, abstract = {Agricultural intensification decreased land cover complexity by converting small complex arable field geometries into large and simple structures which then were managed uniformly. These changes have led to a variety of negative environmental effects and influence ecosystem services. We present a novel small-scale and site-specific cropping system which splits a large field into small homogeneous sub-fields called 'patches' grouped in different yield potentials. A detailed workflow is presented to generate new spatially arranged patches with special focus on preprocessing and filtering of multi-year yield data, the variation in patch sizes and the adaptation of maximum working width to use available conventional farm equipment and permanent traffic lanes. The reduction of variance by the used cluster algorithm depends on the within-field heterogeneity. The patch size, the number of growing seasons (GS) used for clustering and the parallel shift of the patch structure along the permanent traffic lane resulted in a change in relative variance. Independent cross validation showed an increased performance of the classification algorithm with increasing number of GS used for clustering. The applied cluster analysis resulted in robust field segregation according to different yield potential zones and provides an innovative method for a novel cropping system.}, language = {en} } @article{GohrBlumroederSheiletal.2021, author = {Gohr, Charlotte and Blumr{\"o}der, Jeanette Silvin and Sheil, Douglas and Ibisch, Pierre L.}, title = {Quantifying the mitigation of temperature extremes by forests and wetlands in a temperate landscape}, series = {Ecological Informatics}, journal = {Ecological Informatics}, number = {66}, publisher = {Elsevier}, issn = {1574-9541}, doi = {10.1016/j.ecoinf.2021.101442}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4376}, year = {2021}, abstract = {As a result of ongoing climate change and more frequent heat events, the regulating services of land cover in terms of moderating and mitigating local temperatures are increasingly important. While the reduced temperatures found in forests and wetlands are recognized, their wider contribution to regional landscape cooling remains largely uncharacterized and unquantified. Herein, we propose and test a new method that estimates the temperature response and inertia of landscapes in high temperatures, based on land cover share. In order to achieve this goal, we combined the MODIS daytime land surface temperature (henceforth LST) time series and CORINE land cover data. We classified the time series in two ways, i.e. by stepwise temperature range (-10/-5 °C to +35/+40 °C) and by the occurrence of hot days (days with a mean LST ≥ 30 °C). As an explanatory variable, we developed and used a greenest pixel composite of the MODIS normalized difference vegetation index (NDVI) time series. In our study area, covering parts of northeastern Germany and western Poland, the fragmented landscape has heterogeneous temperature patterns, including urban heat islands, warm agricultural areas, cool forests and cold wetlands. We found that at high temperature ranges only forests and wetlands remained comparably cool, with LSTs up to 20.8 °C lower than the maximum LST in the study area. The analysis of land cover shares and LSTs revealed the substantial cooling effect of forests and wetlands in line with increasing land cover share in higher temperature ranges, as well as on hot days. The relation between LST and the NDVI indicated vegetation cover as the cause. We propose the corresponding metrics to quantify landscape-level temperature regulation. Equally, we advocate for management to identify these ecosystem services and their current and potential contributions, along with implications for sustaining and increasing, both tree cover and wetlands and thereby adapting landscapes to climate change.}, language = {en} } @article{SchaeferHaack2023, author = {Sch{\"a}fer, Martina and Haack, Michaela}, title = {Overcoming the efficiency paradigm—The challenges of introducing local organic beef in canteens}, series = {Frontiers in Sustainable Food Systems}, volume = {7}, journal = {Frontiers in Sustainable Food Systems}, publisher = {Frontiers Media S.A.}, issn = {2571-581X}, doi = {10.3389/fsufs.2023.1152185}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4395}, year = {2023}, abstract = {Introduction In recent years, there has been a growing recognition that public canteens can play an important role in supporting the transformation toward sustainable food systems and providing access to sustainable and healthy food for everybody—including the most vulnerable groups of the population. One important way in which canteens can contribute to this transformation is by increasing the share of organic and local products. These new political and public demands contrast with the organizational development of canteens over the past few decades, which has mainly been characterized by an increase in economic efficiency and a reduction in costs. Based on a project that was carried out in the Berlin-Brandenburg region (Germany), this paper exemplifies some of the challenges canteens face in the process of introducing organic and local products. Methods The empirical results are based on 31 qualitative interviews with canteen managers and kitchen staff as well as with the processing company involved. In addition, a survey of 500 canteen guests was conducted in the participating canteens. Results The analysis shows that the canteens had to adapt various organizational practices to ensure a healthy and sustainable diet at manageable cost. Introducing local organic beef in the canteens requires close cooperation with local farmers and processors, a change in procurement practices, transparency around the origin of the products, as well as adapted menu planning. Discussion Based on the empirical results, the paper discusses how these challenges can be met and which supportive measures can be taken on different governance levels. To change entrenched practices, process facilitators who support local cooperation along the value added chain are needed, and practical knowledge and professional training must be provided. The article concludes that there is a great potential to foster a sustainable and healthy diet via public and private canteens if the tension between efficiency and sustainability orientation can be overcome by adapting framework conditions.}, language = {en} } @incollection{Broezel2022, author = {Br{\"o}zel, Claudia}, title = {Developments in German e-Tourism: An Industry Perspective}, series = {Handbook of e-Tourism}, booktitle = {Handbook of e-Tourism}, editor = {Xiang, Zheng and Fuchs, Matthias and Gretzel, Ulrike and H{\"o}pken, Wolfram}, publisher = {Springer Nature}, isbn = {978-3-030-05324-6}, doi = {10.1007/978-3-030-05324-6_11-1}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4414}, publisher = {Hochschule f{\"u}r nachhaltige Entwicklung Eberswalde}, pages = {1 -- 32}, year = {2022}, abstract = {The tourism industry is driven by data. Digitization means efficiency and thus cost savings. The tourism industry, as a highly fragmented and complex worldwide industry, has a strong need for data coordination in order to produce and distribute bundles of travel services to customers. Due to their cost structures and the complex process of organizing worldwide transportation in real time, airlines were the first main drivers of digitalization in the travel industry. In Germany, the leisure market was initiated and first driven by state-dominated companies, but subsequently, a significant change in actors and global dependencies can be seen over the course of time. Until today, the recurring themes in the different stages of digitalization are communication formats and the power of various market actors. This has led to a standardization of data exchange formats between various data systems that allows data to be distributed efficiently worldwide and business processes to be completed in real time. This article includes the perspectives of three interview partners who helped shape the development of the German leisure market. It will be shown how the players and drivers of digitization have changed over time but that the key drivers have stayed the same: cost efficiency, data quality, and technical development.}, language = {en} } @article{GoergensMundCremeretal.2020, author = {G{\"o}rgens, Eric Bastos and Mund, Jan-Peter and Cremer, Tobias and de Conto, Tiago and Krause, Stuart and Valbuena, Ruben and Estraviz Rodriguez, Luiz Carlos}, title = {Automated operational logging plan considering multi-criteria optimization}, series = {Computers and Electronics in Agriculture}, journal = {Computers and Electronics in Agriculture}, number = {170}, publisher = {Elsevier}, issn = {0168-1699}, doi = {10.1016/j.compag.2020.105253}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:eb1-opus-4423}, year = {2020}, abstract = {Multiple goals should be considered while planning and executing forest management. This study proposes a new multidimensional framework for a precision forestry approach assisted by airborne laser scanning data (ALS). Therefore, successful management operations become a key element in the process of promoting protection through sustainable development. Thirteen relevant variables were derived from ALS data, such as: canopy height, terrain topography, relative vegetation density, forest gaps, slope restrictions, skidder restrictions, load truck restrictions, topographic wetness, flow accumulation, horizontal distance to drainage, vertical elevation from drainage, stream and headspring restrictions. Four different scenarios for the management plan optimization were studied: shortest distance, forest conservation, soil conservation and all combined. Results showed that the detailed forest information from ALS point clouds is useful to indicate regions not suitable for forest operations. Failure to properly consider the different factors involved may result in inadequate infrastructures, lower operational performance and constant re-planning requirements.}, language = {en} }