TY - JOUR A1 - Bose, Arun K. A1 - Scherrer, Daniel A1 - Camarero, j. Julio A1 - Ziche, Daniel A1 - Babst, Flurin A1 - Bigler, Christof A1 - Bolte, Andreas A1 - Dorado-Liñán, Isabel A1 - Etzold, Sophia A1 - Fonti, Patrick A1 - Forrester, David I. A1 - Gavinet, Jordane A1 - Gazol, Antonio A1 - González de Andrés, Ester A1 - Karger, Dirk Nikolaus A1 - Lebourgeois, Francois A1 - Lévesque, Mathieu A1 - Martínez-Sancho, Elisabet A1 - Menzel, Annette A1 - Neuwirth, Burkhard A1 - Nicolas, Manuel A1 - Sanders, Tanja G. M. A1 - Scharnweber, Tobias A1 - Schröder, Jens A1 - Zweifel, Roman A1 - Gessler, Arthur A1 - Rigling, Andreas T1 - Climate sensitivity and drought seasonality determine post-drought growth recovery of Quercus petraea and Quercus robur in Europe JF - Science of The Total Environment N2 - 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. KW - Climate change KW - Warming KW - Drought KW - Legacy effects KW - Acclimation KW - Tree rings Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-2609 SN - 1879-1026 VL - 784 PB - Elsevier ER - TY - JOUR A1 - Hentschel, Rainer A1 - Möller, Katrin A1 - Wenning, Aline A1 - Degenhardt, Annett A1 - Schröder, Jens T1 - Importance of Ecological Variables in Explaining Population Dynamics of Three Important Pine Pest Insects JF - Frontiers in Plant Science N2 - 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. KW - ecological modeling KW - Random Forest KW - mass outbreak KW - Pinus sylvestris KW - Lymantria monacha KW - Dendrolimus pini KW - Diprion pini Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-3285 SN - 1664-462X IS - 9 PB - Frontiers Media S.A. ER - TY - CHAP A1 - Körner, Michael A1 - Thiede, Johanna A1 - Belecky, Nils A1 - Kodym, Jannik A1 - Wilms, Florian A1 - Hinds, Charlotte A1 - Hänisch, Anne A1 - Dittkrist, Susann A1 - Kamran, Shahrukh A1 - Wodzinowski, Elias A1 - Böttcher, Jacob A1 - Majunke, Curt A1 - Schröder, Jens A1 - Guericke, Martin T1 - Zuwachsreaktionen nach Nadelverlusten durch Raupenfraß verschiedener Intensität bei Kiefer T2 - Deutscher Verband Forstlicher Forschungsanstalten - Sektion Ertragskunde - Beiträge zur Jahrestagung 2021 N2 - In der vorliegenden Untersuchung wurden nach fernerkundungsbasierter Vorauswahl Probeflächen in durch Raupenfraß der Nonne (Lymantria monacha L.) geschädigten Kieferreinbeständen mittleren Alters angelegt. Es wurden drei Schädigungsklassen (D40, D60, D85) und eine Referenzfläche (D15) berücksichtigt. Neben klassischen ertragskundlichen Aufnahmen wurde sich hauptsächlich auf die Entnahme von Bohrkernen an 15 Baumindividuen pro Probefläche und deren Auswertung konzentriert. Durch die Vermessung der Bohrkerne konnten Zeitreihen der Jahrringbreite (JRB) und nachfolgend des Jahrringindex (JRI) berechnet werden. Während für das Hauptfraßjahr 2003 alle vier Probeflächen mit einer ähnlichen Zuwachsreduktion reagierten, ergaben sich für das Folgejahr deutliche Unterschiede zwischen den geschädigten Flächen und der Referenz. Letztere erholte sich bereits wieder und wies einen JRI von 1,06 auf. Die geschädigten Flächen waren hingegen in ihrem Zuwachs noch stärker eingebrochen, was in einem JRI zwischen 0,20 (D60) und 0,30 (D40) bzw. 0,33 (D85) resultierte. Die folgende Berechnung von Resilienzkomponenten nach Lloret et al. (2011) verdeutlichte ebenfalls die Abhängigkeit zwischen Zuwachs und Entnadelungsgrad. Insbesondere die Recovery weist in diesem Zu- sammenhang darauf hin, dass durch die Freistellung der überlebenden Individuen und aufgrund gewisser Düngungseffekte nach dem Fraß ein Zuwachsniveau erreicht wurde, welches über dem der vierjährigen Periode vor dem Schadereignis liegt. Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-5541 UR - https://sektionertragskunde.nw-fva.de/2021/Band2021.pdf SP - 128 EP - 136 ER - TY - CHAP A1 - Schröder, Jens A1 - Guericke, Martin A1 - Körner, Michael T1 - Fingerprints of biotic agents in tree-ring and NDVI time series of forest stands T2 - TRACE - Tree Rings in Archeology, Climatology and Ecology - Virtual Conference 2021 Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-5559 ER - TY - CHAP A1 - Schröder, Jens A1 - Panka, Stefan A1 - Degenhardt, Annett T1 - Exoten wieder im Fokus - Erkenntnisse zu seltenen und nichtheimischen Baumarten von langfristigen Versuchsflächen T2 - Wissenstransfer in die Praxis : Tagungsband zum Jubiläumskolloquium "150 Jahre Waldforschung in Brandenburg" am 09.Juni 2021 T3 - Eberswalder forstliche Schriftenreihe - 70 Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-6262 SP - 13 EP - 24 ER - TY - CHAP A1 - Schröder, Jens A1 - van der Maaten-Theunissen, Marieke A1 - van der Maaten, Ernst A1 - Thurm, Eric A. T1 - Wuchsreaktionen der Rot-Buche auf die Witterung: ausgewählte Ergebnisse von Jahrringanalysen in Nordostdeutschland T2 - Zustand und Entwicklung der Rot-Buche in den Wäldern Brandenburgs unter den Bedingungen des Klimawandels T3 - Eberswalder forstliche Schriftenreihe - 71 Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-6272 SP - 46 EP - 55 ER - TY - CHAP A1 - Kätzel, Ralf A1 - Schröder, Jens T1 - Zur Zukunft der Rot-Buche im Brandenburger Wald – ein Zwischenfazit T2 - Zustand und Entwicklung der Rot-Buche in den Wäldern Brandenburgs unter den Bedingungen des Klimawandels T3 - Eberswalder forstliche Schriftenreihe - 71 Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-6282 SP - 129 EP - 130 ER - TY - CHAP A1 - Kätzel, Ralf A1 - Schröder, Jens A1 - Becker, Frank A1 - Leinemann, Ludger A1 - Grüll, Martin A1 - Hosius, Bernhard A1 - Löffler, Sonja T1 - Die Rot-Eiche (Quercus rubra L.) - Von der Ersatzbank ins Spielfeld? T2 - Wald im Wandel - Risiken und Lösungsansätze : Tagungsband zum 15. Eberswalder Winterkolloquium 2020 T3 - Eberswalder forstliche Schriftenreihe - 69 Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-6294 SP - 95 EP - 106 ER - TY - JOUR A1 - Linkevičius, Edgaras A1 - Schröder, Jens ED - Perazzo, Alejandro Javier Rescia T1 - Climatic Effects on the Growth of Fagus sylvatica L. in Mixed Stands with Pinus sylvestris L. in Lithuania JF - Sustainability N2 - Climate change and warming will potentially profoundly affect forest growth and yield. However, climate change is not only a threat but also an opportunity for tree species to be more productive or colonize new territories where previously they were fragmented or absent. European beech ( Fagus sylvatica L.) is a dominant and significant tree species in European forests with a pronounced ability to grow on a great variety of sites and to form mixtures with other tree species due to its shade tolerance. So far, only a few studies have analysed its growth and reaction to changing climatic conditions outside its natural gradient in the north. The aim of this study was therefore to clarify the main growth patterns and tree ring formation characteristics of beech (outside their natural distribution) in mixed stands with Scots pine ( Pinus sylvestris L.) The analyses were carried out in two-layered stands in the western part of Lithuania with tree-ring data measured on stem disks collected at 1 m height that were available from shelter-cut thinning activities in a number of forest stands in the region. Our results show that higher temperatures during the summer months of July and August generally inhibited the radial growth of beech under given site conditions. In contrast, warmer late-autumn and cooler early-winter periods together with warmer springs positively affected the radial increments. Above-average precipitation during the vegetation period contributed to the beech producing additional amounts of radial increments. The increasing temperature trends of the summer months and decreasing monthly amounts of precipitation during the vegetation period in recent decades tend to have adverse effects on the ecological conditions for beech growth and vitality in Lithuania. Despite these results, the European beech successfully grows in the sample region and has produced 200 m 3 ha −1 in the analysed stands. KW - - KW - competition KW - mixed stands KW - seasonal effects KW - climatic indicators KW - radial growth KW - dendroecology Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-9136 SN - 2071-1050 VL - 16 IS - 20 PB - MDPI ER - TY - JOUR A1 - Engel, Markus A1 - Hagemann, Ulrike A1 - Schröder, Jens ED - Diaci, Jurij T1 - Long-Term Growth Trends of 18 Native and Non-Native Tree Species Based on Data from Experimental Plots Since 1878 in Brandenburg, Germany JF - Forests N2 - The rapid environmental changes associated with climate change increase the need for adaptation strategies in forest management based on profound knowledge about tree species, particularly in the context of assisted migration. For research purposes, selected native and non-native tree species were planted in Brandenburg, Germany more than 120 years ago. Today, these sites provide an opportunity to gather insights about their performance and growth-response throughout the past century. We analyzed the height growth increment of 18 tree species on 1765 long-term experimental plots, the earliest of which have been monitored since 1878. We additionally investigated the stand-level volume increments on 60 unmanaged plots for two of these species. Our results show increasing trends in forest stand growth for Scots pine ( Pinus sylvestris L.) and Sessile oak ( Quercus petraea (Matt.) Liebl.). However, long-term height increment showed positive, negative, and indifferent growth trends in reaction to changing environmental conditions. Remarkably, 16 out of 18 species showed a growth decline between the years 2000 and 2020, likely attributable to increasing frequencies of single and consecutive drought events. We found non-native species to perform comparably to native tree species. Forest management should reconsider the role of native and non-native species in climate-adapted forests. We recommend focusing on provenance and local site adaptability in assisted migration efforts and argue that maintenance of long-term experiments can provide us with valuable insights on species performance in the near future. KW - - KW - forest growth KW - growth trend KW - climate change KW - assisted migration Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-9644 SN - 1999-4907 VL - 16 IS - 2 PB - MDPI ER - TY - JOUR A1 - Jouy, Florent A1 - Schüle, Maren A1 - Adhikari, Yojana A1 - Binder, Anja A1 - Clerc, Danica A1 - Gerwin, Werner A1 - Heinken, Thilo A1 - Raab, Thomas A1 - Repmann, Frank A1 - Rönnefarth, Susanne A1 - Schirrmacher, Marina A1 - Schmehl, Marie‐Therese A1 - Schröder, Jens A1 - Ibisch, Pierre L. T1 - Factors impacting the variability of post‐fire forest regeneration in central European pine plantations JF - Restoration Ecology N2 - Fire is increasingly posing a risk to forests and plantations, even in the temperate latitudes of central Europe. Little is known about fire ecology in this region, and therefore, appropriate approaches for the management and reforestation of burned sites are mostly lacking. In a Scots pine plantation region in Brandenburg (northeast Germany), the early tree regeneration of two nearby areas that burned 1 year apart was investigated. We observed that 3 years after the fire events, the forest in one study area showed a relatively high regeneration with a mean density of 7765 saplings/ha, clearly dominated by European aspen (93%); whereas the other study area showed a lower mean density of 5061 saplings/ha, dominated by Scots pine (71%) and aspen (15%). Three years after the fires, the difference in aspen density was 11‐fold between the two areas. We studied the effects of several variables about soil and environmental properties on the aspen establishment in these two study areas in the second and third years after the fire events. We found that the post‐fire aspen regeneration was influenced by several factors, including soil texture, soil disturbance from forest management, volume of deadwood, and browsing. We also discussed that weather conditions during seed production and germination might have played a role in the difference in aspen establishment between the two study areas. We concluded that the post‐fire forest regeneration potential in the study region is highly variable and could come under critical pressure as climate change progresses. KW - - KW - aspen KW - deadwood KW - microclimate KW - post‐fire regeneration KW - soil texture Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-10108 SN - 1061-2971 SN - 1526-100X VL - 33 IS - 4 PB - Wiley Periodicals, Inc. CY - Malden, USA ER - TY - JOUR A1 - Schmehl, Marie-Therese A1 - Adhikari, Yojana A1 - Balthasar, Cathrina A1 - Binder, Anja A1 - Clerc, Danica A1 - Dobkowitz, Sophia A1 - Gerwin, Werner A1 - Günther, Kristin A1 - Hartong, Heinrich A1 - Heinken, Thilo A1 - Hess, Carsten A1 - Ibisch, Pierre L. A1 - Jouy, Florent A1 - Leinen, Loretta A1 - Raab, Thomas A1 - Repmann, Frank A1 - Rönnefarth, Susanne A1 - Rohlfs, Lilly A1 - Schirrmacher, Marina A1 - Schröder, Jens A1 - Schüle, Maren A1 - Vieth-Hillebrand, Andrea A1 - Francke, Till T1 - Monitoring abiotic and biotic parameters of forest regrowth under different management regimes on former wildfire sites in northeastern Germany – data from the PYROPHOB project JF - Earth System Science Data N2 - Abstract We present the data recorded by eight institutions within the PYROPHOB project, running from 2020 to 2024 at two forest research sites in the south-west of Brandenburg, Germany. The aim of the project was to monitor abiotic and biotic parameters of forest regrowth under different management regimes on former wildfire sites in northeastern Germany. The observations comprised intermittent and continuous measurements or surveys on meteorological parameters (rainfall, temperature, vapour pressure deficit), soil (soil type and texture, soil chemistry and leaching, water content, soil temperature), deadwood, stand structure, vegetation regrowth, abundance of selected fauna (moths, beetles, mammals), UAV-based remote sensing (stand structure, spatial overview), and photo monitoring (succession). Thus, the multitude of collected data allows not only for detailed analyses of these observables separately, but also considering their interaction for a more multidisciplinary view on forest recovery after a wildfire. The data are available under the following DOIs: 10.23728/b2share.08a6a8b56f774a08a984871e7ef1b5a8 (Part 1, ), under embargo until 31 March 2026 (Part 2, ), 10.23728/b2share.de1661761da5481f938caf460e4f0ca9 (Part 3.1, ), and 10.23728/b2share.51bdf4b6dc854873b6ff44fdddbf4c3b (Part 3.2, ). KW - - Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-10302 SN - 1866-3516 VL - 17 IS - 11 SP - 6295 EP - 6313 PB - Copernicus Publications CY - Göttingen, Germany ER - TY - JOUR A1 - Schmehl, Marie-Therese A1 - Adhikari, Yojana A1 - Balthasar, Cathrina A1 - Binder, Anja A1 - Clerc, Danica A1 - Dobkowitz, Sophia A1 - Gerwin, Werner A1 - Günther, Kristin A1 - Hartong, Heinrich A1 - Heinken, Thilo A1 - Hess, Carsten A1 - Ibisch, Pierre L. A1 - Jouy, Florent A1 - Leinen, Loretta A1 - Raab, Thomas A1 - Repmann, Frank A1 - Rönnefarth, Susanne A1 - Rohlfs, Lilly A1 - Schirrmacher, Marina A1 - Schröder, Jens A1 - Schüle, Maren A1 - Vieth-Hillebrand, Andrea A1 - Francke, Till T1 - Monitoring abiotic and biotic parameters of forest regrowth under different management regimes on former wildfire sites in northeastern Germany – data from the PYROPHOB project JF - Earth System Science Data N2 - Abstract We present the data recorded by eight institutions within the PYROPHOB project, running from 2020 to 2024 at two forest research sites in the south-west of Brandenburg, Germany. The aim of the project was to monitor abiotic and biotic parameters of forest regrowth under different management regimes on former wildfire sites in northeastern Germany. The observations comprised intermittent and continuous measurements or surveys on meteorological parameters (rainfall, temperature, vapour pressure deficit), soil (soil type and texture, soil chemistry and leaching, water content, soil temperature), deadwood, stand structure, vegetation regrowth, abundance of selected fauna (moths, beetles, mammals), UAV-based remote sensing (stand structure, spatial overview), and photo monitoring (succession). Thus, the multitude of collected data allows not only for detailed analyses of these observables separately, but also considering their interaction for a more multidisciplinary view on forest recovery after a wildfire. The data are available under the following DOIs: 10.23728/b2share.08a6a8b56f774a08a984871e7ef1b5a8 (Part 1, ), under embargo until 31 March 2026 (Part 2, ), 10.23728/b2share.de1661761da5481f938caf460e4f0ca9 (Part 3.1, ), and 10.23728/b2share.51bdf4b6dc854873b6ff44fdddbf4c3b (Part 3.2, ). KW - - Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:eb1-opus-10293 SN - 1866-3516 VL - 17 IS - 11 SP - 6295 EP - 6313 PB - Copernicus Publications CY - Göttingen, Germany ER -