Department Head: 

Prof. Dr. Alexandra-Maria Klein
phone:+49 (0)761 203-67770



Mrs. Ilona Winkler
phone:+49 (0)761 203-3635
fax:+49 (0)761 203-3638


Chair of Nature Conservation
& Landscape Ecology
University of Freiburg
Tennenbacher Str. 4
D-79106 Freiburg




  • Nicholson, C.C., Knapp, J., Kiljanek, T., […] Klein, A.M., […] Pereira-Peixoto, M.H., […] Tamburini, G. et al. & Rundlöf, M. (2023): Pesticide use negatively affects bumble bees across European landscapes. Nature. online first. doi: 1038/s41586-023-06773-3. Link
  • Ellerbrok, J.S., Farwig, N., Peter, F., Rehling, F. & Voigt, C.C. (2023): Forest gaps around wind turbines attract bat species with high collision risk. Biological Conservation 288: 110347. Link
  • Mupepele, A.C., von Königslöw, V., Bleile, A.M., Fornoff, F., Fründ, J. & Klein, A.M. (2023): Plant-pollinator interactions in apple orchards from a production and conservation perspective BioRxiv (preprint). doi: 10.1101/2023.11.20.567831. Link
  • Brown, M., Albrecht, M., De la Rúa, P., Hellström, S., Klein, A.M, Michez, D., Nazzi, F., Paxton, R., Straw, E., Wintermantel, D. & Potts. S. (2023): The impacts of multiple stressors on managed bees: Novel insights from the PoshBee project. ARPHA Preprints. online first. doi: 10.3897/arphapreprints.e115172. Link
  • Klein, A.M. (2023): Pflanzen-Insekten-Interaktionen: Insektenschutz zur Stabilität unserer Ökosysteme. In: Athene „Thema:  Zukunft“ - Magazin der HAdW 2 pp. 16-19. Link
  • Geschke, J., Rillig, M.C., Böhning-Gaese, K., Potthast, T., Arth, A., Dick,s L.V., et al. & Klein, A.M. (2023): Science journalism and a multi-directional science-policy-society dialogue are needed to foster public awareness for biodiversity and its conservation. PLOS Sustainability and  Transformation 2: e0000083. online first. doi: 10.1371/journal.pstr.0000083. Link
  • Willcox, B.K., Potts, S.G., Brown, M.J.F., […] Osterman, J., […] Wintermantel, D. et al. & Senapathi, D. (2023): Emerging threats and opportunities to managed bee species in European agricultural systems: a horizon scan. Scientific Reports 13: 18099. online first. doi: 10.1038/s41598-023-45279-w. Link
  • Lindermann, L., Grabener, S., Fornoff, F., Hopfenmüller, S., Schiele, S., Stahl, J. & Dieker, D. (2023): Wildbienen und Wespen in Nisthilfen bestimmen: Ein Bestimmungschlüssel für Deutschland; Ratgeber. Braunschweig: Thünen-Institut für Biodiversität. doi: 10.3220/MX1685523077000. Link
  • Klein, A.M., Steffan-Dewenter, I. (2023): Shaping research on pollinators and pollination between 1983-2023: from bees in the nature reserve Snaakenmoor to pollination deficits of global crop production. In: Dormann, C.F., Batáry, P., Grass, I., Klein, A.M., Loos, J., Scherber, C., Steffan-Dewenter, I. & Wanger, T.C. (eds): Defining Agroecology - A Festschrift for Teja Tscharntke. tredition, Ahrensburg. pp. 115-128 Link
  • Klein, A.M. & Kranke, N. (2023): Some thoughts on transparency of the data and analysis behind the Highly Cited Researchers list. Scientometrics 128: 6773-6780. Link
  • Nepal, S., Trunschke, J., Ren, Z.X., Burgess, K.S. & Wang, H. (2023): Community-wide patterns in pollen and ovule production, their ratio (P/O), and other floral traits along an elevation gradient in southwestern China. BMC Plant Biology 23: 425. Link
  • Brown, M., Bulet, P., Chauzat, M.P., Klein, A.M., Knauer, A., Mand, M., Michez, D., Nazzi, F., Paxton, R., Schweiger, O., Stout, J.C., Yanez, O. & Potts, S.G. (2023): PoshBee Toolbox: A portfolio of high quality methodologies, tools, and practice guides for pollinators. ARPHA Preprints. online first. doi: 10.3897/arphapreprints.e112175. Link
  • Giménez-García, A., Allen-Perkin, A., Bartomeus, I. […] Klein, A.M. et al. & Magrach, A. (2023): Pollination supply models from local to global scale. Web Ecology 23: 99-129. Link
  • Burrascano, S., Chianucci, F., Trentanovi, G., Kepfer-Rojas, S., […] Rappa, N.J., et al. & Ódor, P. (2023): Where are we now with European forest multi-taxon biodiversity and where can we head to? Biological Conservation 284: 110176. Link
  • Elliott, T., Thompson, A., Klein, A.M., Albert, C., Eisenhauer, N., Jansen, F., Schneider, A., Sommer, M., Straka, T., Settele, J., Sporbert, M., Tanneberger, F. & Mupepele, A.C. (2023): Abandoning grassland management negatively influences plant but not bird or insect biodiversity in Europe. Conservation Science and Practice 5: e13008. online first. doi: 10.1111/csp2.13008. Link
  • Warrit, N., Ascher, J., Basu, P., […] Klein, A.M., […] Sritongchuay, T. et al. & Orr, M. (2023): Opportunities and challenges in Asian bee research and conservation. Biological Conservation 285: 110173. online first. doi: 10.1016/j.biocon.2023.110173. Link
  • Rehling, F., Delius, A., Ellerbrok, J., Farwig, N. & Peter, F. (2023): Windenergieanlagen in Wirtschaftswäldern verdrängen häufige Vogelarten. Natur und Landschaft 98: 365-371. Link
  • Leclercq, N., Marshall, L., Weekers, T., […] Osterman, J. et al. & Vereecken, N.J. (2023): Global taxonomic, functional, and phylogenetic diversity of bees in apple orchards. Science of The Total Environment 901: 165933. Link
  • Li, Y., Schmid, B., Schuldt, A. Li, S., Wang, M.Q., Fornoff, F., Staab, M., Guo, P.F., Anttonen, P., Chester, D., Bruelheide, H., Zhu, C.D., Ma, K. & Liu, X. (2023): Multitrophic arthropod diversity mediates tree diversity effects on primary productivity. Nature Ecology & Evolution 7: 832-840. Link
  • Ruppert, L.S., Staab, M., Klingenfuß, S. Rappa, N.J., Frey, J. & Segelbacher, G. (2023): Leaf litter arthropods show little response to structural retention in a Central European forest. Biodiversity and Conservation 32: 3973-3990. Link
  • Alarcón-Segura, V., Roilo, S., Paulus, A., Beckmann, M., Klein, N. & Cord, A.C. (2023): Farm structure and environmental context drive farmers’ decisions on the spatial distribution of ecological focus areas in Germany. Landscape Ecology 38: 2293-2305. Link
  • Fornoff, F., Halla, W., Geiger, S.; Klein, A.M. & Sann, M. (2023): DNA barcoding resolves quantitative multi-trophic interaction networks and reveals pest species in trap nests. Insect Conservation and Diversity 16: 725-731. Link
  • Bottero, I., Dominik, C., Schweiger, O., Albrecht, M., […] Klein A.M., […] Pereira-Peixoto, H.M. [...] Tamburini, G. et al. & Stout, J.C. (2023): Impact of landscape configuration and composition on pollinator communities across different European biogeographic regions. Frontiers in Ecology and Evolution 11: 1128228. online first. doi: 10.3389/fevo.2023.1128228. Link
  • Russo, L. Ruedenauer, F.A., Gronert, A., van de Vreken, I., Vanderplanck, M., Michez, D., Klein, A.M., Leonhardt, S.D. & Stout, J.C. (2023): Fertilizer and herbicide alter nectar and pollen quality with consequences for pollinator floral choices. PeerJ 11:e15452. online first. doi:10.7717/peerj.15452. Link
  • Wittmann, K., Klein, A.M. & Staab, M. (2023): The influence of habitat properties on sex determination in cavity-nesting Hymenoptera. Basic and Applied Ecology 70: 1-11. Link
  • Thiel, S., Willems, F., Farwig, N., Rehling, F., et al. & Heer, K. (2023): Vertically stratified frugivore community composition and interaction frequency in a liana fruiting across forest strata. Biotropica 55: 650-664. Link
  • Rehling, F., Jongejans, E., Schlautmann, J., Albrecht, J., Fassbender, H., Jaroszewicz, B., Matthies, D., Waldschmidt, L., Farwig, N. & Schabo, D.G. (2023): Common seed dispersers contribute most to the persistence of a fleshy-fruited tree. Communications Biology 6: 330. Link
  • Amano, T., Berdejo-Espinola, V., Akasaka, M. [..] Mupepele, A.C. et al. & Zamora-Gutierrez, V. (2023): The role of non-English-language science in informing national biodiversity assessments. Nature Sustainability 6: 845-854. Link
  • Schuldt, A., Liu, X., Buscot, F., Bruelheide, H., Erfmeier, A., He, J.S., Klein, A.M., Ma, K., Scherer-Lorenzen, M., Schmid, B., Scholten, T., Tang, Z., Trogisch, S., Wirth, C., Wubet, T. & Staab, M. (2023): Carbon-biodiversity relationships in a highly diverse subtropical forest. Global Change Biology 29: 5321-5333. Link
  • Allan, M.J., Dean, R., Klein, A.M., Wintermantel, D., Albrecht, M., Schwarz, J. & Knauer, A. (2023): Milestone 15 Protocols for semi-field and field experiments. ARPHA preprints. online first. doi: 10.3897/arphapreprints.e101323. Link
  • Hellström, S., Strobl, V., Straub, L., Osterman, W.H.A., Robert J. Paxton, R.J. & Osterman, J. (2023): Beyond generalists: The Brassicaceae pollen specialist Osmia brevicornis as a prospective model organism when exploring pesticide risk to bees. Environmental and Sustainability Indicators 18: 100239. Link
  • Wildermuth, B., Fardiansah, R., Matevski, D., Lu, J.Z., Kriegel, P., Scheu, S. & Schuldt, A. (2023): Conifers and non-native tree species shift trophic niches of generalist arthropod predators in Central European beech forests. BMC Ecology and Evolution 23: 3. Link
  • Chaves, J.E., Aravena Acuña, M.C., Rodríguez-Souilla, J., Cellini, J.M., Rappa, N.J., Lencinas, M.V., Peri, P.L. & Martínez Pastur, G.J. (2023): Carbon pool dynamics after variable retention harvesting in Nothofagus pumilio forests of Tierra del Fuego. Ecological Processes 12: 5. Link
  • Niu, H., Rehling, F., Chen, Z., Yue, X., Zhao, H., Wang, Z., Zhang, H., Schabo, D.G. & Farwig, N. (2023): Regeneration of urban forests as influenced by fragmentation, seed dispersal mode and the legacy effect of reforestation interventions. Landscape and Urban Planning 233: 104712. Link
  • Rehling, F., Delius, A., Ellerbrok, J., Farwig, N., & Peter, F. (2023): Wind turbines in managed forests partially displace common birds. Journal of Environmental Management 328: 116968. Link
  • Gibbs, J., Hanuschuk, E., Miller, R., Dubois, M., Martini, M., Robinson, S., Nakagawa, P., Sheffield, C.S., Cardinal, S. & Onuferko, T.M. (2023): A checklist of the bees (Hymenoptera: Apoidea) of Manitoba, Canada. The Canadian Entomologist 155: e3. online first. doi: 10.4039/tce.2022.45. Link
  • Georgi, M., Gärtner, S.M., Förschler, M.I., Buse, J., Fornoff, F., Ssymank, A. & Klein, A.M. (2023): Mulching time of forest meadows influences insect diversity. Insect Conservation and Diversity 16: 368-378. Link
  • Rappa, N.J., Staab, M., Rupert, L.S., Frey, J., Bauhus, J. & Klein, A.M (2023): Structural elements enhanced by retention forestry promote forest and non-forest specialist bees and wasps. Forest Ecology and Management 529: 120709. Link (Corrigendum)
  • Timóteo, S., Albrecht, J., Rumeu, B., Norte, A. C., Traveset, A., Frost, C. M., Marchante, E., López-Núñez, F. A., Peralta, G., Memmott, J., Olesen, J. M., Costa, J. M., da Silva, L. P., Carvalheiro, L. G., Correia, M., Staab, M., Blüthgen, N., Farwig, N., Hervías-Parejo, S. & Heleno, R. (2023): Tripartite networks show that keystone species can multitask. Functional Ecology 37: 274-286. Link
  • Eckerter, T., Erbacher, J., Wolf, W., Braunisch, V. & Klein, A.M. (2023): Verges along forest roads promote wild bees. Forest Science 69: 167-177. Link
  • Mazi, S., Paxton, R.J. & Osterman, J. (2023): A subset of wild bee species boosts the pollination of pigeon pea (Cajanus cajan: Fabaceae), an important crop plant of Cameroon. Journal of Apicultural Research 62: 598-606. Link
  • Dürrbaum, E., Fornoff*, F., Scherber, C., Vesterinen, E.J. & Eitzinger*, B. (2023): Metabarcoding of trap nests reveals differential impact of urbanization on cavity nesting bee and wasp communities. Molecular Ecology 23: 6449-6460. Link *These authors contributed equally to the study


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