TY - GEN A1 - Birkhofer, Klaus A1 - Dietrich, Christoph A1 - John, Katharina A1 - Schorpp, Quentin A1 - Zaitsev, Andrey S. A1 - Wolters, Volkmar T1 - Regional conditions and land-use alter the contribution of soil arthropos to ecosystem services in grasslands. Frontiers in Agroecology and Land-Use Systems T2 - Frontiers in Ecology and Evolution Y1 - 2016 U6 - https://doi.org/10.3389/fevo.2015.00150 SN - 2296-701X VL - 3 SP - 150 ER - TY - GEN A1 - Sereda, Elvira A1 - Wolters, Volkmar A1 - Birkhofer, Klaus T1 - Addition of crop residues affects a detritus-based food chain depending on litter type and farming system T2 - Basic and Applied Ecology Y1 - 2015 U6 - https://doi.org/10.1016/j.baae.2015.07.005 SN - 1439-1791 VL - 16 IS - 8 SP - 746 EP - 754 ER - TY - GEN A1 - Hines, Jes A1 - Putten, Wim H. van der A1 - Deyn, Gerlinde B. de A1 - Wagg, Cameron A1 - Voigt, Winfried A1 - Mulder, Christian A1 - Weisser, Wolfgang W. A1 - Engel, Jan A1 - Melian, Carlos A1 - Scheu, Stefan A1 - Birkhofer, Klaus A1 - Ebeling, Anne A1 - Scherber, Christoph A1 - Eisenhauer, Nico T1 - Towards an integration of biodiversity-ecosystem functioning and food web theory to evaluate relationships between multiple ecosystem services T2 - Advances in Ecological Research Y1 - 2015 U6 - https://doi.org/10.1016/bs.aecr.2015.09.001 SN - 0065-2504 VL - 53 SP - 161 EP - 199 ER - TY - GEN A1 - Rusch, Adrien A1 - Birkhofer, Klaus A1 - Bommarco, Riccardo A1 - Smith, Henrik G. A1 - Ekbom, Barbara T1 - Predator body sizes and habitat preferences predict predation rates in an agroecosystem T2 - Basic and Applied Ecology Y1 - 2015 U6 - https://doi.org/10.1016/j.baae.2015.02.003 SN - 1439-1791 VL - 16 IS - 3 SP - 250 EP - 259 ER - TY - GEN A1 - Tsiafouli, Maria A1 - Thébault, Elisa A1 - Sgardelis, Stefanos P. A1 - Ruiter, Peter C. de A1 - Putten, Wim H. van der A1 - Birkhofer, Klaus A1 - Hemerik, Lia A1 - Vries, Franciska T. de A1 - Bardgett, Richard D. A1 - Brady, Mark Vincent A1 - Bjornlund, Lisa A1 - Bracht Jørgensen, Helene A1 - Christensen, Sören A1 - D'Hertefeldt, Tina A1 - Hotes, Stefan A1 - Hol, W. H. Gera A1 - Frouz, Jan A1 - Liiri, Mira A1 - Mortimer, Simon R. A1 - Setälä, Heikki A1 - Tzanopoulous, Joseph A1 - Uteseny, Karoline A1 - Pižl, Václav A1 - Stary, Josef A1 - Wolters, Volkmar A1 - Hedlund, Katarina T1 - Intensive agriculture reduces soil biodiversity across Europe T2 - Global Change Biology Y1 - 2015 U6 - https://doi.org/10.1111/gcb.12752 SN - 1365-2486 VL - 21 IS - 2 SP - 973 EP - 985 ER - TY - GEN A1 - Serbina, Liliya A1 - Burckhardt, Daniel A1 - Birkhofer, Klaus A1 - Syfert, Mindy M. A1 - Halbert, Susan E. T1 - The potato pest Russelliana solanicola Tuthill (Hemiptera: Psylloidea): taxonomy and host-plant patterns T2 - Zootaxa Y1 - 2015 U6 - https://doi.org/10.11646/zootaxa.4021.1.2 SN - 1175-5326 SN - 1175-5334 VL - 4021 IS - 1 SP - 33 EP - 62 ER - TY - GEN A1 - Allan, Eric A1 - Birkhofer, Klaus T1 - Inter-annual variation in land-use intensity enhances grassland multidiversity T2 - Proceedings of the National Academy of Sciences Y1 - 2014 U6 - https://doi.org/10.1073/pnas.1312213111 SN - 1091-6490 VL - 111 IS - 1 SP - 308 EP - 318 ER - TY - GEN A1 - Setälä, Heikki A1 - Birkhofer, Klaus A1 - Brady, Mark Vincent A1 - Byrne, Loren B. A1 - Vries, Franciska T. de A1 - Gardi, Ciro A1 - Hotes, Stefan A1 - Hedlund, Katarina A1 - Liiri, Mira A1 - Mortimer, Simon R. A1 - Pavao-Zuckerman, Mitchell A1 - Pouyat, Richard A1 - Tsiafouli, Maria A1 - Hemerik, Lia A1 - Bardgett, Richard D. A1 - Ruiter, Peter C. de A1 - Putten, Wim H. van der T1 - Urban and agricultural soils: conflicts and trade-offs in the optimization of ecosystem services T2 - Urban Ecosystems Y1 - 2014 U6 - https://doi.org/10.1007/s11252-013-0311-6 SN - 1083-8155 SN - 1573-1642 VL - 17 IS - 1 SP - 239 EP - 253 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Ekroos, Johan A1 - Corlett, E. B. A1 - Smith, Henrik G. T1 - Winners and losers of organic cereal farming in animal communities across Central and Northern Europe T2 - Biological Conservation Y1 - 2014 U6 - https://doi.org/10.1016/j.biocon.2014.04.014 SN - 0006-3207 VL - 175 SP - 25 EP - 33 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Wolters, Volkmar A1 - Diekötter, Tim T1 - Grassy margins along organically managed cereal fields foster trait diversity and taxonomic distinctness of arthropod communities T2 - Insect Conservation and Diversity Y1 - 2014 U6 - https://doi.org/10.1111/icad.12051 SN - 1752-4598 VL - 7 IS - 3 SP - 274 EP - 287 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Bird, Tharina A1 - Bilde, Trine A1 - Lubin, Yael T1 - Spatial patterns of social spider colonies in Namibia reflect habitat features and dispersal modes T2 - Transactions of the Royal Society of South Africa Y1 - 2014 U6 - https://doi.org/10.1080/0035919X.2014.941044 SN - 0035-919X SN - 2154-0098 VL - 69 IS - 3 SP - 157 EP - 163 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Ekroos, Johan A1 - Smith, Henrik G. T1 - Effects of maize on the diversity of arthropod predators and its value as a resource for arthropod fauna T2 - Nordic Association of Agricultural Science Report Y1 - 2014 SN - 1653-2015 VL - 10 SP - 55 EP - 56 ER - TY - GEN A1 - Sereda, Elvira A1 - Blick, Theo A1 - Dorow, Wolfgang H. O. A1 - Wolters, Volkmar A1 - Birkhofer, Klaus T1 - Assessing spider diversity on the forest floor: expert knowledge beats a regular sampling design T2 - The Journal of Arachnology Y1 - 2014 UR - http://www.jstor.org/stable/24365280 SN - 1937-2396 SN - 0161-8202 VL - 42 IS - 1 SP - 44 EP - 51 ER - TY - GEN A1 - Diekötter, Tim A1 - Wamser, Sabine A1 - Wolters, Volkmar A1 - Birkhofer, Klaus T1 - Corrigendum to "Landscape and management effects on structure and function of soil arthropod communities in winter wheat" T2 - Agriculture Ecosystems & Environment Y1 - 2014 U6 - https://doi.org/10.1016/j.agee.2014.02.006 SN - 0167-8809 VL - 184 IS - 182 ER - TY - GEN A1 - Rusch, Adrien A1 - Birkhofer, Klaus A1 - Bommarco, Riccardo A1 - Smith, Henrik G. A1 - Ekbom, Barbara T1 - Management intensity at field and landscape levels affects the taxonomic and functional structure of generalist predator communities T2 - Oecologia Y1 - 2014 U6 - https://doi.org/10.1007/s00442-014-2949-z SN - 0029-854 SN - 1432-1939 VL - 175 IS - 3 SP - 971 EP - 983 ER - TY - GEN A1 - Effiom, Edu O. A1 - Birkhofer, Klaus A1 - Smith, Henrik G. A1 - Olsson, Ola T1 - Changes of community composition at multiple trophic levels due to hunting in Nigerian tropical forests T2 - Ecography Y1 - 2014 U6 - https://doi.org/10.1111/j.1600-0587.2013.00359.x SN - 1600-0587 VL - 37 IS - 4 SP - 367 EP - 377 ER - TY - GEN A1 - Williams, Alwyn A1 - Birkhofer, Klaus A1 - Hedlund, Katarina T1 - Above- and below-ground interactions with agricultural management: effects of soil microbial communities on barley and aphids T2 - Pedobiologia Y1 - 2014 U6 - https://doi.org/10.1016/j.pedobi.2014.01.004 SN - 0031-4056 VL - 57 IS - 2 SP - 67 EP - 74 ER - TY - GEN A1 - Rader, Romina A1 - Birkhofer, Klaus A1 - Schmucki, Reto A1 - Smith, Henrik G. A1 - Stjernman, Martin A1 - Lindborg, Regina T1 - Organic farming and heterogeneous landscapes positively affect different measures of plant diversity T2 - Journal of applied ecology Y1 - 2014 U6 - https://doi.org/10.1111/1365-2664.12344 SN - 1365-2664 VL - 51 IS - 6 SP - 1544 EP - 1553 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Smith, Henrik G. A1 - Rundlöf, Maj T1 - Environmental Impacts of Organic Farming T2 - eLS - Wiley Online Library N2 - Organic agriculture is a production system that aims at sustaining healthy soils, ecosystems and people by prohibiting the application of synthetic pesticides and fertilisers in crop production and by emphasising animal welfare in livestock breeding. This article shows that organic agriculture is characterised by higher soil quality and reduced nutrient or pesticide leaching compared to nonorganic agriculture, but that positive effects on biological control services or emission of greenhouse gases are less evident. Yield gaps between organic and nonorganic agriculture are on average 20%, but vary between crops and regions. Given the environmental risks that are associated with intensive, nonorganic agriculture, farming practices should be modified to decrease risks. Organic agriculture can be a more environmentally friendly alternative, but individual farming practices need improvement to meet the demands of a growing human population. Further growth of the organic farming sector will contribute to reduce the negative environmental impact of agriculture. Y1 - 2016 U6 - https://doi.org/10.1002/9780470015902.a0026341 SP - 1 EP - 7 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Smith, Henrik G. A1 - Weisser, Wolfgang W. A1 - Wolters, Volkmar A1 - Gossner, Martin M. T1 - Land-use effects on the functional distinctness of arthropod communities T2 - Ecography N2 - Land-use change is a major driver of the global loss of biodiversity, but it is unclear to what extent this also results in a loss of ecological traits. Therefore, a better understanding of how land-use change affects ecological traits is crucial for efforts to sustain functional diversity. To this end we tested whether higher species richness or taxonomic distinctness generally leads to increased functional distinctness and whether intensive land use leads to functionally more narrow arthropod communities. We compiled species composition and trait data for 350 species of terrestrial arthropods (Araneae, Carabidae and Heteroptera) in different land-use types (forests, grasslands and arable fields) of low and high land-use intensity. We calculated the average functional and taxonomic distinctness and the rarified trait richness for each community. These measures reflect the range of traits, taxonomic relatedness and number of traits that are observed in local communities. Average functional distinctness only increased significantly with species richness in Carabidae communities. Functional distinctness increased significantly with taxonomic distinctness in communities of all analyzed taxa suggesting a high functional redundancy of taxonomically closely related species. Araneae and Heteroptera communities had the expected lower functional distinctness at sites with higher land-use intensity. More frequently disturbed land-use types such as managed grasslands or arable fields were characterized by species with smaller body sizes and higher dispersal abilities and communities with lower functional distinctness or trait richness. Simple recommendations about the conservation of functional distinctness of arthropod communities in the face of future land-use intensification and species loss are not possible. Our study shows that these relationships depend on the studied taxa and land-use type. However, for some arthropod groups functional distinctness is threatened by intensification and conversion from less to more frequently disturbed land-uses. Y1 - 2015 U6 - https://doi.org/10.1111/ecog.01141 SN - 0906-7590 VL - 38 IS - 9 SP - 889 EP - 900 ER - TY - CHAP A1 - Birkhofer, Klaus A1 - Diehl, Eva A1 - Wolters, Volkmar A1 - Smith, Henrik G. T1 - Global metawebs of spider predation highlight consequences of land-use change for terrestrial predator-prey networks T2 - Adaptive Food Webs – Stability and Transitions of Real and Model Ecosystems Y1 - 2017 SN - 978-1-107-18211-0 SP - 193 EP - 213 PB - Cambridge University Press CY - Cambridge ER - TY - GEN A1 - Roubinet, Eve A1 - Birkhofer, Klaus A1 - Malsher, Gerard A1 - Staudacher, Karin A1 - Ekbom, Barbara A1 - Traugott, Michael A1 - Jonsson, Mattias T1 - Diet of generalist predators reflects effects of cropping period and farming system on extra- and intraguild prey T2 - Ecological Applications Y1 - 2017 U6 - https://doi.org/10.1002/eap.1510 SN - 1939-5582 VL - 27 IS - 4 SP - 1167 EP - 1177 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Fevrier, Valentin A1 - Heinrich, Anna Eva A1 - Rink, Katharina A1 - Smith, Henrik G. T1 - The contribution of CAP greening measures to conservation biological control at two spatial scales T2 - Agriculture, Ecosystem & Environment N2 - To promote a more sustainable agricultural production, the European Commission implemented direct payments that require farmers to implement greening measures aimed at reducing negative effects of agriculture on the environment and biodiversity. These greening measures (including fallows and permanent grasslands) have been criticised for their potential inability to conserve biodiversity and promote associated ecosystem services. In this study, we investigate if the presence of old or recently established fallows and permanent grassland in the landscape are beneficial for the emergence, activity density and spillover of ground-running natural enemies and as a result aphid biological control in cereal fields. Lycosidae and Theridiidae were more numerous in fallows (emergence & activity density) compared to crop fields, while Staphylinidae and Linyphiidae showed opposite patterns. Spillover of Lycosidae was significantly higher from fallows into cereal fields, than between cereal fields. As a result of the opposite patterns in activity density in fallows between different groups of predators, a spillover from fallows did not result in a significantly higher aphid control in crop fields adjacent to them. A high proportion of permanent grassland in the landscape resulted in lower emergence of Linyphiidae and Carabidae. Our results support the assumption that a higher emergence and activity density of ground-running predators generally results in higher spillover to adjacent fields. However, patterns of emergence and activity density differed between individual natural enemy groups. Fallows, independent of age, can therefore act as source or sink depending on the focal predator group and more permanent grassland in the landscape can result in lower local emergence. Fallows at the local scale and permanent grassland at larger spatial scales therefore did not generally promote aphid biological control services provided by ground-running natural enemies. Y1 - 2018 U6 - https://doi.org/10.1016/j.agee.2017.12.026 SN - 1873-2305 IS - 255 SP - 84 EP - 94 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Andersson, Georg K. S. A1 - Bengtsson, Janne A1 - Bommarco, Riccardo A1 - Dänhardt, Juliana A1 - Ekbom, Barbara A1 - Ekroos, Johan A1 - Hahn, Thomas A1 - Hedlund, Katarina A1 - Jönnson, Annelie M. A1 - Lindborg, Regina A1 - Olsson, Ola A1 - Rader, Romina A1 - Rusch, Adrien A1 - Stjernman, Martin A1 - Williams, Alwyn A1 - Smith, Henrik G. T1 - Relationships between multiple biodiversity components and ecosystem services along a landscape complexity gradient T2 - Biological Conservation Y1 - 2018 U6 - https://doi.org/10.1016/j.biocon.2017.12.027 SN - 1873-2917 VL - 218 SP - 247 EP - 253 ER - TY - GEN A1 - Staudacher, Karin A1 - Rennstam Rubbmark, Oskar A1 - Birkhofer, Klaus A1 - Malsher, Gerard A1 - Sint, Daniela A1 - Jonsson, Mattias A1 - Traugott, Michael T1 - Habitat heterogeneity induces rapid changes in the feeding behaviour of generalist arthropod predators T2 - Functional Ecology Y1 - 2018 U6 - https://doi.org/10.1111/1365-2435.13028 SN - 1365-2435 VL - 32 IS - 3 SP - 809 EP - 819 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Bylund, Helena A1 - Dalin, Peter A1 - Ferlian, Olga A1 - Gagic, Vesna A1 - Hambäck, Peter A. A1 - Klapwijk, Maartje A1 - Mestre, Laia A1 - Roubinet, Eve A1 - Schroeder, Martin A1 - Stenberg, Johan A. A1 - Porcel, Mario A1 - Björkman, Christer A1 - Jonsson, Mattias T1 - Methods to identify the prey of invertebrate predators in terrestrial field studies T2 - Ecology and Evolution Y1 - 2017 U6 - https://doi.org/10.1002/ece3.2791 SN - 2045-7758 VL - 7 IS - 6 SP - 1942 EP - 1953 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Gossner, Martin M. A1 - Diekötter, Tim A1 - Drees, Claudia A1 - Ferlian, Olga A1 - Maraun, Mark A1 - Scheu, Stefan A1 - Weisser, Wolfgang W. A1 - Wolters, Volkmar A1 - Wurst, Susanne A1 - Zaitsev, Andrey S. A1 - Smith, Henrik G. T1 - Land-use type and intensity differentially filter traits in above- and below-ground arthropod communities T2 - Journal of Animal Ecology Y1 - 2017 U6 - https://doi.org/10.1111/1365-2656.12641 SN - 1365-2656 VL - 86 IS - 3 SP - 511 EP - 520 ER - TY - GEN A1 - Nyffeler, Martin A1 - Birkhofer, Klaus T1 - An estimated 400–800 million tons of prey are annually killed by the global spider community T2 - The Science of Nature Y1 - 2017 U6 - https://doi.org/10.1007/s00114-017-1440-1 SN - 1432-1904 VL - 104 IS - 3-4 ER - TY - GEN A1 - Nyffeler, Martin A1 - Lapinski, Witold A1 - Snyder, Andrew A1 - Birkhofer, Klaus T1 - Spiders feeding on earthworms revisited: consumption of giant earthworms in the tropics T2 - Journal of Arachnology Y1 - 2017 U6 - https://doi.org/10.1636/JoA-17-013.1 SN - 1937-2396 VL - 45 IS - 2 SP - 242 EP - 247 ER - TY - GEN A1 - Mader, Viktoria A1 - Diehl, Eva A1 - Fiedler, Daniela A1 - Thorn, Simon A1 - Wolters, Volkmar A1 - Birkhofer, Klaus T1 - Trade-offs in arthropod conservation between productive and non-productive agri-environmental schemes along a landscape complexity gradient T2 - Insect Conservation and Diversity Y1 - 2017 U6 - https://doi.org/10.1111/icad.12220 SN - 1752-4598 VL - 10 IS - 3 SP - 236 EP - 247 ER - TY - GEN A1 - Nilsson, Lovisa A1 - Andersson, Georg K. S. A1 - Birkhofer, Klaus A1 - Smith, Henrik G. T1 - Ignoring ecosystem-service cascades undermines policy for multifunctional agricultural landscapes T2 - Frontiers in Ecology and Evolution Y1 - 2017 U6 - https://doi.org/10.3389/fevo.2017.00109 SN - 2296-701X IS - 5 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Palmu, Erkki A1 - Hanson, Helena I. A1 - Hedlund, Katarina T1 - Can hydrogen and oxygen isotope ratios reveal large-scale patterns in dispersal and dietary origin in ground beetles? T2 - Applied Soil Ecology Y1 - 2017 U6 - https://doi.org/10.1016/j.apsoil.2017.06.006 SN - 0929-1393 VL - Vol. 119 SP - 99 EP - 103 ER - TY - GEN A1 - Eisenhauer, Nico A1 - Antunes, Pedro M. A1 - Bennett, Alison E. A1 - Birkhofer, Klaus A1 - Bissett, Andrew A1 - Bowker, Matthew A. A1 - Caruso, Tancredi T1 - Priorities for research in soil ecology T2 - Pedobiologia Y1 - 2017 U6 - https://doi.org/10.1016/j.pedobi.2017.05.003 SN - 0031-4056 N1 - viele weitere Autoren VL - 63 SP - 1 EP - 7 ER - TY - GEN A1 - Hansen, Helena I. A1 - Birkhofer, Klaus A1 - Smith, Henrik G. A1 - Palmu, Erkki A1 - Hedlund, Katarina T1 - Agricultural land use affects abundance and dispersal tendency of predatory arthropods T2 - Basic and Applied Ecology N2 - Predatory arthropods contribute to biological control, but to become an integral part of agricultural management, it is essential to identify drivers of their spatio-temporal distribution at the landscape scale. This study focuses on how agricultural land use affects the community composition, emergence and dispersal tendency of predatory arthropods. The arthropods were collected in emergence traps during the growing season (14 weeks) in a gradient of agricultural land uses from intensively managed sugar beet fields, over winter wheat fields, to less intensively managed grasslands. The emergence traps were equipped with one pitfall trap and a collecting bottle at the top. The distribution of the arthropods between these two collecting methods was assumed to represent their tendency to move out of the habitat. The grasslands had the highest numbers of spiders, while the winter wheat fields had the highest numbers of omnivorous rove beetles and macropterous predaceous ground beetles. The phenology of emergence differed between the land-use types, resulting in seasonal differences in community composition. The overall dispersal tendency of predatory arthropods was higher in crop fields than in grasslands. This study suggests that only a diverse mix of agricultural land uses will provide high levels of predators from different functional groups, throughout the growing season. Y1 - 2017 U6 - https://doi.org/10.1016/j.baae.2016.10.004 SN - 1618-0089 SN - 1439-1791 IS - 18 SP - 40 EP - 49 ER - TY - GEN A1 - Tschumi, Matthias A1 - Ekroos, Johan A1 - Hjort, Cecilia A1 - Smith, Henrik G. A1 - Birkhofer, Klaus T1 - Predation‐mediated ecosystem services and disservices in agricultural landscapes T2 - Ecological Applications Y1 - 2018 U6 - https://doi.org/10.1002/eap.1799 SN - 1939-5582 VL - 28 IS - 8 SP - 2109 EP - 2118 ER - TY - GEN A1 - Birkhofer, Klaus A1 - Rusch, Adrien A1 - Andersson, Georg K. S. A1 - Bommarco, Riccardo A1 - Dänhardt, Juliana A1 - Ekbom, Barbara A1 - Jönnson, Annelie M. A1 - Lindborg, Regina A1 - Olsson, Ola A1 - Rader, Romina A1 - Stjernman, Martin A1 - Williams, Alwyn A1 - Hedlund, Katarina A1 - Smith, Henrik G. T1 - A framework to identify indicator species for ecosystem services in agricultural landscapes T2 - Ecological Indicators Y1 - 2018 U6 - https://doi.org/10.1016/j.ecolind.2018.04.018 SN - 1470-160X VL - 91 SP - 278 EP - 286 ER - TY - GEN A1 - Mader, Viktoria A1 - Diehl, Eva A1 - Wolters, Volkmar A1 - Birkhofer, Klaus T1 - Agri‐environmental schemes affect the trophic niche size and diet of common carabid species in agricultural landscapes T2 - Ecological Entomology N2 - 1. Carabids are abundant in agroecosystems and provide biocontrol services by feeding on weed seeds and pests. We compare the effects of two fundamentally different agri‐environmental schemes (AES) on the numeric and trophic responses of four common carabid species: Anchomenus dorsalis, Poecilus cupreus, Pseudoophonus rufipes and Pterostichus melanarius. 2. In six cereal fields under organic farming and six sown flowering fields, 10 290 individuals of the four species were sampled to quantify their numeric response. The activity density of all species was higher in organically managed cereal fields compared to flowering fields. 3. We analysed naturally occurring stable isotope ratios of carbon and nitrogen in 138 carabid individuals to quantify isotopic niches and the diet contribution of soil‐ versus plant‐based resources. Resources from the soil (‘brown’) energy channel were more important than resources from the plant (‘green’) energy channel in the diet of all species, particularly in P. melanarius. 4. Isotopic niches were larger for P. rufipes and P. melanarius in flowering fields than in organically managed cereal fields. Moreover, differences between AES types were observed in the diet contribution derived from both energy channels: A. dorsalis and P. cupreus incorporated higher proportions of plant‐based resources in organically managed cereal fields compared to flowering fields. 5. Similar numeric, but different trophic responses suggest that AES type may alter arthropod food webs beyond simple changes in carabid densities. Such ‘hidden’ modifications in the resource utilisation of generalist predators deserve more attention to adequately evaluate the ecological consequences of AES. Y1 - 2018 U6 - https://doi.org/10.1111/een.12671 SN - 1365-2311 SN - 0307-6946 VL - 43 IS - 6 SP - 823 EP - 835 ER - TY - GEN A1 - Karp, Daniel S. A1 - Birkhofer, Klaus T1 - Crop pests and predators exhibit inconsistent responses to surrounding landscape composition T2 - Proceedings of the National Academy of Sciences of the United States of America N2 - The idea that noncrop habitat enhances pest control and represents a win-win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are measured. Here, we use a pest-control database encompassing 132 studies and 6,759 sites worldwide to model natural enemy and pest abundances, predation rates, and crop damage as a function of landscape composition. Our results showed that although landscape composition explained significant variation within studies, pest and enemy abundances, predation rates, crop damage, and yields each exhibited different responses across studies, sometimes increasing and sometimes decreasing in landscapes with more noncrop habitat but overall showing no consistent trend. Thus, models that used landscape-composition variables to predict pest-control dynamics demonstrated little potential to explain variation across studies, though prediction did improve when comparing studies with similar crop and landscape features. Overall, our work shows that surrounding noncrop habitat does not consistently improve pest management, meaning habitat conservation may bolster production in some systems and depress yields in others. Future efforts to develop tools that inform farmers when habitat conservation truly represents a win-win would benefit from increased understanding of how landscape effects are modulated by local farm management and the biology of pests and their enemies. KW - agroecology KW - biodiversity KW - biological control KW - ecosystem services KW - natural enemies Y1 - 2018 U6 - https://doi.org/10.1073/pnas.1800042115 SN - 1091-6490 SN - 0027-8424 N1 - viele weitere Autoren VL - 115 IS - 33 SP - E7863 EP - E7870 ER - TY - GEN A1 - Zaitsev, Andrey S. A1 - Birkhofer, Klaus A1 - Ekschmitt, Klemens A1 - Wolters, Volkmar T1 - Belowground Tritrophic Food Chain Modulates Soil Respiration in Grasslands T2 - Pedosphere N2 - Edaphic biota significantly affects several essential ecological functions such as C-storage, nutrient turnover, and productivity. However, it is not completely understood how belowground animal contribution to these functions changes in grasslands subject to different land use types. A microcosm experiment was carried out to test the effect of a tritrophic food chain on CO2 release from grassland soils. Soil was collected from three differently managed grassland systems (meadow, pasture, and mown pasture) located in three distinct German regions that cover a north-south gradient of approximately 500 km. The tritrophic food chain comprised natural edaphic microflora, nematodes, and predatory gamasid mites. The experimental design involved a full factorial combination of the presence and absence of nematodes and gamasid mites. Nematodes significantly increased the CO2 emissions in most treatments, but the extent of this effect varied with land use type. The fact that grazing by nematodes stimulated the metabolic activity of the edaphic microflora over a wide range of grassland soils highlighted the critical impact of the microfauna on ecosystem services associated with soil organic matter dynamics. Gamasids slightly amplified the effect of nematodes on microbial metabolic activity, but only in the pastures. This effect was most probably due to the control of nematode abundance. The fact that gamasid addition also augmented the impact of environmental conditions on nematode-induced modulation of soil respiration highlighted the need for including land use differences while evaluating soil fauna contribution to soil processes. To conclude, the differential response of the investigated tritrophic food chain to different grassland management systems suggests that adverse effects of land use intensification on important soil processes such as atmospheric C-release could potentially be reduced by using management methods that preserve essential features of the belowground food web. Y1 - 2018 U6 - https://doi.org/10.1016/S1002-0160(18)60008-6 SN - 1002-0160 VL - 28 IS - 1 SP - 114 EP - 123 ER - TY - GEN A1 - Berger, Josef S. A1 - Birkhofer, Klaus A1 - Hanson, Helena I. A1 - Hedlund, Katarina T1 - Landscape configuration affects herbivore–parasitoid communities in oilseed rape T2 - Journal of Pest Science N2 - It is crucial to consider the effects of large-scale drivers on species presences and ecological interactions to understand what structures communities. In our study, we investigated how the species composition and the potential interaction networks of herbivore and parasitoid communities in oilseed rape fields are affected by agricultural landscape characteristics. Insect communities of 26 winter oilseed rape fields in southern Sweden were captured in water traps over a continuous time span of 30 ± 2 days. In total, 31% of the variation in the composition of herbivore host communities was explained by a combination of the surrounding oilseed rape area in the study year and the previous year and distance to the nearest forest. The oilseed rape area in the study year and distance to forest also explained 14% of the variation in the composition of parasitoid communities. Distance to the nearest forest together with the area of oilseed rape in the previous year explained 45% of the variation in asymmetry of interaction webs. These results indicate that several measures of landscape configuration are important both for the composition of host and parasitoid communities and also for the structure of interaction networks. Our results support the view that it is an appropriate strategy to cultivate oilseed rape in landscapes that are far away from forests, in order to minimize recolonization by pest species and at the same time to attract parasitoid species from the open landscape. Y1 - 2018 U6 - https://doi.org/10.1007%2Fs10340-018-0965-1 SN - 1612-4758 SN - 1612-4766 VL - 91 IS - 3 SP - 1093 EP - 1105 ER - TY - GEN A1 - Tschumi, Matthias A1 - Ekroos, Johan A1 - Hjort, Cecilia A1 - Smith, Henrik G. A1 - Birkhofer, Klaus T1 - Rodents, not birds, dominate predation-related ecosystem services and disservices in vertebrate communities of agricultural landscapes T2 - Oecologia N2 - To understand the relationship between conservation measures and agricultural yields, we need to know the contributions of organisms to both ecosystem services and disservices. We studied the activity and contribution of birds and mammals to intermediate ecosystem services (predation of weed seeds or invertebrate pests) and disservices (predation of crop seeds or beneficial invertebrates) in southern Sweden between June and November 2016. We measured seed and invertebrate predation rates using trays placed in front of 32 wildlife cameras in 16 cereal fields with a local habitat contrast (8 fields adjacent to another crop field and 8 fields adjacent to a semi-natural grassland) and along a landscape heterogeneity gradient (amount of semi-natural grassland). Both activity and predation were dominated by small mammals (mainly rodents), yet only a few species contributed to predation services and disservices according to camera records. Small mammal activity and predation varied considerably over time. Small mammal activity was significantly higher at trays with crop seeds or beneficial invertebrate prey compared to trays with pest prey, and crop seed predation by small mammals was significantly higher than weed seed predation. In contrast, bird activity and predation did not differ significantly between resource types, but varied over time depending on the habitat contrast. Predation of animal prey by birds was highest after cereal harvest, independent of habitat contrast. Our study highlights that birds and in particular rodents provide important intermediate ecosystem services, but also disservices, which fluctuate strongly in intensity over time. KW - Biological control; Predators; Semi-natural grasslands; Weed control; Wildlife cameras Y1 - 2018 U6 - https://doi.org/10.1007/s00442-018-4242-z SN - 0029-8549 SN - 1432-1939 VL - 188 IS - 3 SP - 863 EP - 873 ER - TY - GEN A1 - Ahlswede, Steve A1 - Fabiano, Ezequiel Chimbioputo A1 - Keeping, Derek A1 - Birkhofer, Klaus T1 - Using the Formozov–Malyshev–Pereleshin formula to convert mammal spoor counts into density estimates for long‐term community‐level monitoring T2 - African Journal of Ecology Y1 - 2019 U6 - https://doi.org/10.1111/aje.12587 SN - 1365-2028 SN - 0141-6707 VL - 57 IS - 2 SP - 177 EP - 189 ER - TY - GEN A1 - Wanner, Manfred A1 - Birkhofer, Klaus A1 - Fischer, Thomas A1 - Shimizu, Miki A1 - Shimano, Satoshi D. A1 - Puppe, Daniel T1 - Soil Testate Amoebae and Diatoms as Bioindicators of an Old Heavy Metal Contaminated Floodplain in Japan T2 - Microbial Ecology Y1 - 2020 U6 - https://doi.org/10.1007/s00248-019- 01383-x SN - 1432-184X SN - 0095-3628 VL - 79 IS - 1 SP - 123 EP - 133 ER - TY - GEN A1 - Phillips, Helen R. P. A1 - Guerra, Carlos A. A1 - Bartz, Marie L. C. A1 - Briones, Maria J. I. A1 - Brown, George A1 - Birkhofer, Klaus T1 - Global distribution of earthworm diversity T2 - Science KW - earthworm diversity Y1 - 2019 UR - https://science.sciencemag.org/content/366/6464/480.abstract U6 - https://doi.org/10.1126/science.aax4851 SN - 1095-9203 N1 - viele weitere Autoren VL - Vol. 366 IS - 6464 SP - 480 EP - 485 ER - TY - GEN A1 - Wanner, Manfred A1 - Birkhofer, Klaus A1 - Puppe, Daniel A1 - Shimano, Satoshi D. A1 - Shimizu, Miki T1 - Tolerance of testate amoeba species to rising sea levels under laboratory conditions and in the South Pacific T2 - Pedobiologia Y1 - 2020 SN - 0031-4056 VL - 79 ER - TY - GEN A1 - Tschumi, Matthias A1 - Birkhofer, Klaus A1 - Blasiusson, Sandra A1 - Jörgensen, Martin A1 - Smith, Henrik G. A1 - Ekroos, Johan T1 - Woody elements benefit bird diversity to a larger extent thansemi-natural grasslands in cereal-dominated landscapes T2 - Basic and Applied Ecology N2 - Increasing landscape complexity can mitigate negative effects of agricultural intensification on biodiversity by offeringresources complementary to those provided in arablefields. In particular, grazed semi-natural grasslands and woody elementssupport farmland birds, but little is known about their relative effects on bird diversity and community composition. In addition,the relative importance of local habitat versus landscape composition remains unclear. We investigated how the presence ofsemi-natural grasslands, the number of woody elements and the composition of the wider agricultural landscape affect bird spe-cies richness, true diversity (exponential Shannon diversity) and species composition. Bird communities were surveyed fourtimes on 16 paired transects of 250 m each with 8 transects placed between a cropfield and a semi-natural grassland and 8transects between two cropfields with no semi-natural grasslands in the vicinity. The number of woody elements around trans-ects was selected as an important predictor in all models, having a positive effect on species richness and true diversity, whilethe local presence of semi-natural grasslands was not selected in the best models. However, species richness and true diversityincreased with increasing cover of ley and semi-natural grasslands, whereas species composition was modified by the coverageof winter wheat at the landscape scale. Furthermore, bird species richness, true diversity and species composition differedbetween sampling dates. As bird diversity benefited from woody elements, rather than from the local presence of semi-naturalgrasslands as such, it is important to maintain woody structures in farmland. However, the positive effect of grassland at thelandscape scale highlights the importance of habitat variability at multiple scales. Because species richness and true diversitywere affected by different landscape components compared to species composition, a mosaic of land-use types is needed toachieve multiple conservation goals across agricultural landscapes. Y1 - 2020 U6 - https://doi.org/10.1016/j.baae.2020.03.005 SN - 1439-1791 VL - 46 SP - 15 EP - 23 ER - TY - GEN A1 - Tluste, Claudia A1 - Bröring, Udo A1 - Němec, Tomáš A1 - Birkhofer, Klaus T1 - Morphometric traits of shells determine utilization marks in the Roman Snail in eastern Germany T2 - Web Ecology N2 - Overexploitation, habitat destruction and a changing climate threaten populations of the Roman snail(Helix pomatiaLinnaeus, 1758), which has led to a high protection status in Germany. Vertebrate and inver-tebrate predators, including parasites and facultative parasitoids, further cause pressure on populations. Giventhe conservation concern forH. pomatiaand its rarity in the study region (Cottbus, Germany), we studied howpredators and facultative parasitoids utilizeH. pomatiashells with a focus on non-invasive field methods. As pre-vious studies indicated that shell size may affect prey selection by predators, morphometric traits were measuredin eight subpopulations. We identified the total number and percentage ofH. pomatiashells that showed externalattack marks by predators and internal utilization marks by Diptera pupae and related those utilization patternsto the morphometric traits of shells. A large proportion of the shells in local subpopulations showed signs ofexternal attack and internal utilization, and both utilization forms were positively correlated. External attacks bypredators were more frequent in larger shells and internal utilization by Diptera was more common in shells withhigher body density. These results suggest a considerable pressure by predators and potential facultative para-sitoids onH. pomatiapopulations in the study area. Future research should focus on the relationship betweensnails from the family Helicidae and flies from the genusDiscomyza. Conservation programmes should considerabiotic habitat conditions together with potential trophic interactions to maximize the success of conservationstrategies Y1 - 2020 U6 - https://doi.org/10.5194/we-20-87-2020 SN - 1399-1183 SN - 2193-3081 VL - 20 IS - 2 SP - 87 EP - 94 ER - TY - GEN A1 - Samways, Michael J. A1 - Barton, Philip S. A1 - Birkhofer, Klaus A1 - Chichorro, Filipe A1 - Deacon, Charl A1 - Fartmann, Thomas A1 - Fukushima, Caroline S. T1 - Solutions for humanity on how to conserve insects T2 - Biological Conservation N2 - The fate of humans and insects intertwine, especially through the medium of plants. Global environmentalchange, including land transformation and contamination, is causing concerning insect diversity loss, articulatedin the companion reviewScientists'warning to humanity on insect extinctions. Yet, despite a sound philosophical foundation, recognized ethical values, and scientific evidence, globally we are performing poorly at instigatingeffective insect conservation. As insects are a major component of the tapestry of life, insect conservation woulddo well to integrate better with overall biodiversity conservation and climate change mitigation. This also in-volves popularizing insects, especially through use of iconic species, through more media coverage, and moreinclusive education. Insect conservationists need to liaise better with decision makers, stakeholders, and landmanagers, especially at the conceptually familiar scale of the landscape. Enough evidence is now available, andsynthesized here, which illustrates that multiple strategies work at local levels towards saving insects. We nowneed to expand these locally-crafted strategies globally. Tangible actions include ensuring maintenance of bioticcomplexity, especially through improving temporal and spatial heterogeneity, functional connectivity, andmetapopulation dynamics, while maintaining unique habitats, across landscape mosaics, as well as instigatingbetter communication. Key is to have more expansive sustainable agriculture and forestry, improved regulationand prevention of environmental risks, and greater recognition of protected areas alongside agro-ecology innovel landscapes. Future-proofing insect diversity is now critical, with the benefits far reaching, includingcontinued provision of valuable ecosystem services and the conservation of a rich and impressive component ofEarth's biodiversity. KW - Human well-being KW - Conservation action KW - Conservation strategies KW - Habitat management KW - Climate change KW - Species extinction Y1 - 2020 U6 - https://doi.org/10.1016/j.biocon.2020.108427 SN - 0006-3207 VL - 242 ER - TY - GEN A1 - Aguilera, Guillermo A1 - Roslin, Tomas A1 - Miller, Kirsten A1 - Tamburini, Giovanni A1 - Birkhofer, Klaus A1 - Caballero-Lopez, Berta A1 - Lindström, Sandra Ann-Marie A1 - Öckinger, Erik A1 - Rundlöf, Maj A1 - Rusch, Adrien A1 - Smith, Henrik G. A1 - Bommarco, Riccardo T1 - Crop diversity benefits carabid and pollinator communities in landscapes with semi‐natural habitats T2 - Journal of Applied Ecology N2 - 1.In agricultural landscapes, arthropods provide essential ecosystem services such as biological pest control and pollination. Intensified crop management practices and homogenization of landscapes have led to declines among such organisms. Semi‐natural habitats, associated with high numbers of these organisms, are increasingly lost from agricultural landscapes but diversification by increasing crop diversity has been proposed as a way to reverse observed arthropod declines and thus restore ecosystem services. However, whether or not an increase in the diversity of crop types within a landscape promotes diversity and abundances of pollinating and predaceous arthropods, and how semi‐natural habitats might modify this relationship, are not well understood. 2. To test how crop diversity and the proportion of semi‐natural habitats within a landscape are related to the diversity and abundance of beneficial arthropod communities, we collected primary data from seven studies focusing on natural enemies (carabids and spiders) and pollinators (bees and hoverflies) from 154 crop fields in Southern Sweden between 2007 and 2017. 3. Crop diversity within a 1‐km radius around each field was positively related to the Shannon diversity index of carabid and pollinator communities in landscapes rich in semi‐natural habitats. Abundances were mainly affected by the proportion of semi‐natural habitats in the landscape, with decreasing carabid and increasing pollinator numbers as the proportion of this habitat type increased. Spiders showed no response to either crop diversity or the proportion of semi‐natural habitats. 4. Synthesis and applications. We show that the joint effort of preserving semi‐natural habitats and promoting crop diversity in agricultural landscapes is necessary to enhance communities of natural enemies and pollinators. Our results suggest that increasing the diversity of crop types can contribute to the conservation of service‐providing arthropod communities, particularly if the diversification of crops targets complex landscapes with a high proportion of semi‐natural habitats. KW - ecosystem services KW - predation KW - agricultural intensification KW - arable land KW - crop diversity KW - diversification KW - pollination KW - landscape composition Y1 - 2020 U6 - https://doi.org/10.1111/1365-2664.13712 SN - 1365-2664 SN - 0021-8901 VL - 57 IS - 11 SP - 2170 EP - 2179 ER - TY - GEN A1 - Cardoso, Pedro A1 - Barton, Philip S. A1 - Birkhofer, Klaus A1 - Chichorro, Filipe A1 - Deacon, Charl A1 - Fartmann, Thomas A1 - Fukushima, Caroline S. A1 - Gaigher, René A1 - Habel, Jan C. T1 - Scientists' warning to humanity on insect extinctions T2 - Biological Conservation N2 - Here we build on the manifesto‘World Scientists’Warning to Humanity, issued by the Alliance of WorldScientists. As a group of conservation biologists deeply concerned about the decline of insect populations, wehere review what we know about the drivers of insect extinctions, their consequences, and how extinctions cannegatively impact humanity.We are causing insect extinctions by driving habitat loss, degradation, and fragmentation, use of polluting andharmful substances, the spread of invasive species, global climate change, direct overexploitation, and co-ex-tinction of species dependent on other species.With insect extinctions, we lose much more than species. We lose abundance and biomass of insects, diversityacross space and time with consequent homogenization, large parts of the tree of life, unique ecological functionsand traits, and fundamental parts of extensive networks of biotic interactions. Such losses lead to the decline ofkey ecosystem services on which humanity depends. From pollination and decomposition, to being resources fornew medicines, habitat quality indication and many others, insects provide essential and irreplaceable services.We appeal for urgent action to close key knowledge gaps and curb insect extinctions. An investment in research programs that generate local, regional and global strategies that counter this trend is essential. Solutions areavailable and implementable, but urgent action is needed now to match our intentions. KW - Arthropods KW - Biodiversity loss KW - Centinelan extinctions KW - Drivers of extinction KW - Ecosystem services KW - Threatened species Y1 - 2020 U6 - https://doi.org/10.1016/j.biocon.2020.108426 IS - 242 ER -