Prof. Dr. Alexandra-Maria Klein

Main areas of research

• Agroecology
• Pollination ecology
• Landscape ecology and management
• Ecosystem functions and services
• Biodiversity research
• Plant-insect interactions
• Citizen science

Summer semester:

• B.Sc. module (4301/5301) Heimische Arten erkennen und bestimmen
• B.Sc. module (4331/5331) Kartierung von Lebensräumen und Schutzgütern 
• M.Sc. module (12505/22205) Experimental Ecology
• M.Sc. module (12106) Experimentelle Ökologie im Naturschutz
• M.Sc. module (12105) Artenkenntnis und Diversität

Winter semester:

• B.Sc. module (xxxx/xxxx) Nachhaltige Landwirtschaft – Gestalten und Bewerten
• B.Sc. module (4303/5303) Landschaftsökologie und -management
• B.Sc. and M.Sc. module (13011) Wildbienenbestimmung
• M.Sc. module (13024) SPHERE – Sustainable Farming and Pollinator Habitat Restoration for Biodiversity and Food Security

• Wintermantel, D., Kassie, D., Hendricks-Franco, L., Knapp, J., Jahnke, A., Breeze, T. D., Brown, M. J. F., Brühl, C. A., Dewaele, J., Fievet, M., Focks, A., Gekière, A., Goulson, D., Hagedorn, G., Huelsduenker, T., Ituarte-Lima, C., Klein, A.M., Kling, A., de Miranda, J. R., Michez, D., Ozoh, P. N., Paxton, R. J., Pe’er, G., Potts, S. G., Riedel, A., Rouillard, J., Rundlöf, M., Schäfer, R. B., Schäffer, A., Sgolastra, F., Slunge, D., Topping, C. J., Tosi, S., Vanbergen, A. J. & Osterman, J. (2026): EU Omnibus proposal increases pesticide risks. Science, https://doi.org/10.1126/science.aeg8744
• Gekière, A., Tourbez, C., Vanderplanck, M., Kiljanek, T., Ghisbain, G., Kardas, E., Bottero, I., Chauzat, MP, Cini, E., Corvucci, F., de Miranda, J.R., Di Prisco, G., Dominik, C., Grillenzoni, F.V., Hodge, S., Knauer, A., Laurent, M., Martínez-López, V., Raimets, R., Schwarz, J.M., Senapathi, D., Serra, G., Tamburini, G., Wintermantel, D., Brown, M.J.F., Albrecht, M., Costa, C., De la Rúa, P., Klein, A.M., Mänd, M., Potts, S.G., Rundlöf, M., Schweiger, O., Stout, J.C. & Michez, D. (2026): Nutritional composition of pollen stores in managed bees across European agro-ecosystems reveals species-specific differences but limited pesticide effects. Ecological Entomology. https://doi.org/10.1111/een.70096
• Klein, A.M. & Krohmer, J. (2026): #Krautschau – Vielfalt zum Niederkien. In: Altmoos, M., Stengel, E. (eds.): Miniwildnis für alle. Was Natur kann, wenn wir sie machen lassen. Ulmer, Stuttgart, Germany, pp. 139–140.
• Albert, G., Staab, M., Luo, A., Anttonen, P., Beugnon, R., Cesarz, S., Chen, J., Eisenhauer, N., Erfmeier, A., Fornoff, F., Guo, P., Härdtle, W., Hönig, L, Jiang, L., Klein, A.M., Li, Y., Li, Y, Li, Y., Liu, L., Ma, K., Goddert von Oheimb, G., Rutten, G., Scholten, A., Seitz, S., Singavarapu, B., Trogisch, S., Wang, M.Q., Wang, P., Wu, D., Wubet, T., Yang, X., Yu, M. Zhang N., Schmid, B., Bruelheide, H., Liu, X, Zhu, C.D. & Schuldt, A. (2026): Multitrophic interaction networks mediate biodiversity effects on ecosystem multifunctionality. Nature Communications, accepted.
• Guo, P.F., Li, Y., Wang, M.Q., Orr, M., Martini, M., Chen, J.T., Zhou, Q.S., Shi, X.Q., Luo, A., Niu, Z.Q., Klein, A.M. & Zhu, C.D. (2026): Plant traits rather than plant phylogenetic and functional diversity drive bee diversity in a subtropical forest. Journal of Plant Ecology: rtag110. https://doi.org/10.1093/jpe/rtag110
• Fardiansah, R., Rehling, F., Cordeiro Pereira, J.M., Heiderich, L., Stör, J.L., Rothacher, J., Müller, J. & Klein, A.M. (2026): Structural complexity and prey availability shape spider communities under retention forestry. Journal of Applied Ecology 63: e70415. https://doi.org/10.1111/1365-2664.70415
• Hellerich, C., Garratt, M., Klein, A.M., Fornoff, F. & Mupepele, A.C. (2026): Reducing ploughing promotes ground-nesting flying insects. Agriculture, Ecosystems and the Environments 405: 110399. https://doi.org/10.1016/j.agee.2026.110399
• Knapp, J., Dicks, L.V., Kranke, N., Morgan, W.H., Potts, S., Smith, H., Stout, J., Thijssen, M., Thompson, A. & Klein, A.M. (2026): Restoring pollinators in Europe: Evidence-based actions for Nature Restoration Plans. Zenodo. https://doi.org/10.5281/zenodo.18655302
• Arnillas, C.A., Stotz, G.C., Ortiz, A.M.D., Chinga Chamorro, J.B., Chiuffo, M.C., Collinge, S.K., Kariuki, R.W., Norman, H., Regan, H.M., Visakorpi, K., Devarajan, K., Klein, A.M., Schnabel, F., Arponen, A., Cadotte, M.W., Cousens, R., Ehrlich, K., Grell-Brisk, M., Hughes, L., Kharouba, H.M., Martin, T.G., Prado-Valladares, A.C., Rumpff, L., Soares, B.E., Williams, M., Winter, M., Yannelli, F.A., Beyene, M., Fernando, S., Hart, T., Santaoja, M. & Santos Domínguez, N. (2026): Strengthening responsibilities to face global crises: A call to ecologists, environmental scientists and their societies. People and Nature 8: 800–807. https://doi.org/10.1002/pan3.70253
• Knauer, A., Adhikari, S., …, Mupepele, A.C., …, Pereira-Peixoto, M.H., …, Tamburini, G., …, Klein, A.M. & Albrecht, M. (2026): Pesticides and habitat loss additively reduce wild bees in crop fields. Nature Ecology and Evolution 10: 95–104. https://doi.org/10.1038/s41559-025-02924-z
• Klein, A.M., Bruelheide, H., Chesters, D., Diekötter, T., Erfmeier, A., Feldhaar, H., Fornoff, F., Grozinger, C., Kranke, N., Liang, Y., Liu, X., Luo, A., Oelmann, Y., Orr, M., Petermann, J.S., Qiao, H., Rehling, F., Sann, M., Scholten, T., Schuldt, A., Seitz, S., Staab, M., Thorn, S., Wang, M.Q., Xiao, Z.S., Zhang, N. & Zhu, C.D. (2026): MultiTroph: Multi-trophic interactions in a forest biodiversity experiment in China. Research Ideas and Outcomes 12: e181743. https://doi.org/10.3897/rio.12.e181743
• Sritongchuay, T., Beckmann, M., Dalsgaard, B., Klein, A.M., Lausch, A., Nielsen, A., Osterman, J., Selsam, P., Wayo, K. & Seppelt, R. (2026): Crop diversity in the landscape boosts pollinators and yield of pollinator dependent crops across the world. Agriculture, Ecosystems & Environment 395: 109943. https://doi.org/10.1016/j.agee.2025.109943
• Klein, A.M., Adamsone-Fiskovica, A., Alins, G., Angelstam, P., Belveze, A., Bosch, J., Breeze, T., Comont, R.F., de Groot, E., Dicks, L., Dominguez, A.R., Dudás, G., Fabricius Kristiansen, L., Fedoriak, M., Gallai, N., Garratt, M., Grivins, M., Grozinger, C., Jenner, N., Kleftodimos, G., Kleijn, D., Kovács-Hostyánszki, A., Krauss, B., Leonhardt, S.D., Osterman, J., Ouin, A., Plowman, A., Potts, S.G., Rasmussen, C., Roquer-Beni, L., Rossi, D., Rundlöf, M., Schweiger, O., Smith, H.G., Stout, J.C., Sutter, L., Thorsøe, M., Vlontzos, G., Wintermantel, D., Kranke, N. & Thompson, A. (2025): RestPoll: Restoring Pollinator habitats across European agricultural landscapes based on multi-actor participatory approaches. Research Ideas and Outcomes 11: e181727. https://doi.org/10.3897/rio.11.e181727
• Bosshard, E., Harrison, M.E., …, Klein, A.M., …, Sritongchuay, T., … & Kaiser-Bunbury, C.N. (2025): Proximity to natural habitat is not consistently associated with pollination services in tropical smallholder farms: A systematic review and meta-analysis. Ecology Letters 28: e70229. https://doi.org/10.1111/ele.70229
• Wittmann, K., Klein, A.M., Pichler, M. & Staab, M. (2025): Disentangling the influence of environmental conditions on sex determination in haplodiploid organisms. Journal of Animal Ecology 94: 2584–2596. https://doi.org/10.1111/1365-2656.70153
• Bishop, G.A., Kleijn, D., …, Fornoff, F., …, Klein, A.M., …, von Königslöw, V., … & Fijen, T.P.M. (2025): Critical habitat thresholds for effective pollinator conservation in agricultural landscapes. Science 389: 1314–1319. https://doi.org/10.1126/science.adr2146
• Du, T.T., Lu, H.X., Wang, M.Q., Li, Y., Shi, X.Y., Orr, M., Li, J., Luo, A., Klein, A.M., Zhu, C.D. & Guo, P.F. (2025): A solitary wasp boosts nesting success through nest architecture (Hymenoptera, Vespidae, Anterhynchium flavomarginatum). Journal of Hymenoptera Research 98: 709–719. https://doi.org/10.3897/jhr.98.155756
• Eeraerts, M., Osterman, J., Batáry, P., Klein, A.M., … & Verheyen, K. (2025): Global synthesis of apple pollination research highlights general pollen limitation and positive contributions of wild bees compared to honeybees. Journal of Applied Ecology 62: 2487–2501. https://doi.org/10.1111/1365-2664.70155
• Sponagel, C., Thompson, A., Paetow, H., Mupepele, A.-C., Bieling, C., Sommer, M., Klein, A.M., Settele, J., Finger, R., Huber, R., Albert, C., Filser, J., Jansen, F., Kleemann, J., Schreiner, V. & Lakner, S. (2025): Pathways for biodiversity enhancement in German agricultural landscapes. People and Nature 7: 2172–2193. https://doi.org/10.1002/pan3.70103
• Parreno, M.A., Werle, S., Buydens, L., Spitz, J., Härtl, F., Montoya, J., Ruedenauer, F., Arisoy, B., Seiler, R., Leroy, C., Feng-Spitz, Q., Nebauer, C.A., Ferrari, A., Proessl, N., Borchardt, R., Peters, B., Siebler, S., Reese, M., Schumacher, N., Phung, T., Schildt, K., Ebensberger, J., Seiler, M., Reiter, P., Beelaert, S., Buydens, M., Koirala, S., Moreniere, J., Tänzler, R., Alaux, C., Filipiak, M., Meeus, I., Piot, N., Kuhlmann, M., Requier, F., Klein, A.M., Brunet, J.L., Henry, M., Keller, A. & Leonhardt, S.D. (2025): Data on visitation records from wild bees and plants along a land use gradient in Germany and Belgium: laboratory work and protocol description for barcoding. Data in Brief 61: 111672. https://doi.org/10.1016/j.dib.2025.111672
• Klein, A.M. & Fornoff, F. (2025): Praxishandbuch Nutzpflanzenbestäubung: Ertragssteigerung durch Förderung der Biodiversität. Haupt Verlag, Bern, Schweiz. https://www.haupt.ch/buecher/natur-garten/praxishandbuch-nutzpflanzenbestaeubung.html?cur=1
• Mupepele, A.C., Hellwig, N., Dieker, P. & Klein, A.M. (2025): What evidence exists on wild bee trends in Germany? A systematic map. Environmental Evidence 14: 11. https://doi.org/10.1186/s13750-025-00364-7
• Hellerich, C., Klein, A.M., Garratt, M., Mix, M., Mupepele A.C. & Fornoff, F. (2025): Beneath the buzz: Quantifying nest locations and densities of ground-nesting wild bees (Hymenoptera: Anthophila). Methods in Ecology and Evolution 16: 1334–1349. https://doi.org/10.1111/2041-210X.70062
• Schindler, Z., Larysch, E., Fornoff, F., Kröner, K., Obladen, N., Klein, A.M., Seifert, T. Vonderach, C. & Morhart, C. (2025): Flower power: Modelling floral resources of wild cherry (Prunus avium L.) for bee pollinators based on 3D data. Ecology 106: e70103. https://doi.org/10.1002/ecy.70103
• Tourbez, C., Gekière, A., Bottero, I., Chauzat, M.P., Cini, E., Corvucci, F., de Miranda, J.R.,  Di Prisco, G., Dominik, C., Grillenzoni, F.V., Hodge, S., Kiljanek, T., Knauer, A., Laurent, M., Martínez-López, V., Raimets, R., Schwarz, J.M., Senapathi, D., Serra, G., Tamburini, G., Wintermantel, D., Brown, M.J.F., Albrecht, M., Costa, C., De la Rúa, P., Klein, A.M., Mänd, M., Potts, S.G., Rundlöf, M., Schweiger, O., Stout, J.C. & Michez, D. (2025): Variation in the pollen diet of managed bee species across European agroecosystems. Agriculture, Ecosystems & Environment 383: 109518. https://doi.org/10.1016/j.agee.2025.109518
• Wyckhuys, K.A.G., Abram, P.K., Barrios, E., Cancino, J., Collatz, J., Fancelli, M., Klein, A.M., Lindell, C.A., Osterman, J., Pinto, M., Tang, F.H.M., Tena, A. & Elkahky, M. (2025): Orchard systems offer low-hanging fruit for low-carbon, biodiversity-friendly farming. BioScience biae140. https://doi.org/10.1093/biosci/biae140
• Fardiansah, R., Rehling, F., Rappa, N., Dormann, C.F. & Klein, A.M. (2025): Host identity, nest quality, and parasitism strategy: influences on body size variation in parasitoid bees and wasps. Oikos 2025: e011052. https://doi.org/10.1111/oik.11052
• Cini, E., Potts, S.G., Senapathi, D., Albrecht, M., Arafah, K., Askri, D., Bocquet, M., Bulet, P., Costa, C., De la Rúa, P., Klein, A.M., Knauer, A., Mänd, M., Raimets, R., Schweiger, O., Stout, J.C. & Breeze, T.D. (2025): Beekeepers’ perceptions toward a new omics tool for monitoring bee health in Europe. PLOS One 20: e0316609. https://doi.org/10.1371/journal.pone.0316609
• Mupepele, A.C., von Königslöw, V., Bleile, A.M., Fornoff, F., Fründ, J. & Klein, A.M. (2025): Plant–pollinator interactions in apple orchards from a production and conservation perspective. Conservation Science and Practice 7: e13280. https://doi.org/10.1111/csp2.13280
• Tsang, T.P.N., De Santis, A.A.A., Armas-Quiñonez, G., …, Klein, A.M., …, Sritongchuay, T., …, Ponisio, L.C. & Bonebrake, T.C. (2025): Land use change consistently reduces α but not β and γ diversity of bees. Global Change Biology 31: e70006. https://doi.org/10.1111/gcb.70006
• Beaurepaire, A.L., Hogendoorn, K., Kleijn, D., Otis, G.W., Potts, S.G., Singer, T.L., Boff, C.P., Settele, J., Paxton, R.J., Nigel, E.R.,Tosi, Williams, N., Klein, A.M., Le Conte, Y., Campbell, J.W., Williams, G.R., Marini, L., Brockmann, A., Sgolastra, F., Boyle, N., Neuditschko, M., Straub, L., Neumann, P., Charrière, J.D., Albrecht, M. & Dietemann, V. (2024): Avenues towards reconciling wild and managed bee proponents. Trends in Ecology and Evolution 40: 7–10. https://doi.org/10.1016/j.tree.2024.11.009
• Klein, A.M. (2024): Antrittsreden der ordentlichen Mitglieder der Heidelberger Akademie der Wissenschaften 2009–2023. Klein, Alexandra-Maria. In: Hüttig, U. & Kräusslich, H.G. (eds.) Die Heidelberger Akademie der Wissenschaften im Spiegel ihrer Antrittsreden 2009–2023. Universitätsverlag Winter, Heidelberg, Germany, pp. 437–440.
• Crone, M.K., Fornoff, F., Klein, A.M. & Grozinger, C. (2024): DNA metabarcoding reveals unexpected diet breadth of the specialist large-headed resin bee (Heriades truncorum) in urbanized areas across Germany. Insect Conservation and Diversity 18: 149-160. https://doi.org/10.1111/icad.12791
• Hendel, A.L., …, Storch, I., Klein, A.M. & Braunisch, V. (2024): Disentangling direct and indirect effects of forest structure on biodiversity: Bottom-up and top-down effects between forestry, bats, and their insect prey. Journal of Applied Ecology 62: 93–105. https://doi.org/10.1111/1365-2664.14822
• Basu, P., Ngo, H.T., Aizen, M.A., Garibaldi, L.A., Gemmill-Herren, B., Imperatriz-Fonseca, V., Klein, A.M., Potts, S.G., Seymour, C.L. & Vanbergen, A.J. (2024): Pesticide impacts on insect pollinators: current knowledge and future research challenges. Science of the Total Environment 954: 176656. https://doi.org/10.1016/j.scitotenv.2024.176656
• Parreno, M.A., Werle, S., Buydens, L., Leroy, C., Roberts, S., Koirala, S., Filipiak, M., Kuhlmann, M., Brunet, J.L., Henry, M., Alaux, C., Requier, F., Piot, N., Meeus, I.,Klein, A.M., Keller, A. & Leonhardt, S.D. (2024): Landscape heterogeneity correlates with bee and pollen diversity while size and specialization degree explain species-specific responses of wild bees to the environment. Science of the Total Environment 954: 176595. https://doi.org/10.1016/j.scitotenv.2024.176595
• Sheng, D., Jing, S., He, X, Klein, A.M., Köhler, H.R. & Wanger, T.C. (2024): Plastic pollution in agricultural landscapes: an overlooked threat to pollination, biocontrol and food security. Nature Communications 15: 8413. https://doi.org/10.1038/s41467-024-52734-3
• Lakner, S., Grüner, S., Sommer, P., Hasenöhrl, U., Turk, Z., Böhner, H., Koch, M., Meyer-Jrshof, M., Mupepele, A.C., Mascarenhas, A., Klein, A.M., Paul, C., Jansen, F. & Mehring, M. (2024): Indirekte Treiber der Biodiversitätsentwicklung. In: Wirth, C., Bruelheide, H., Farwig, N., Marx, J., Settele, J. (eds.) Faktencheck Artenvielfalt. Bestandsaufnehme und Perspektiven für den Erhalt der biologischen Vielfalt in Deutschland. Oekom Verlag, Munich, Germany, pp. 1049-1121.
• Klein, A.M., Thompson, A., Lakner, S., Mupepele, A.C., Paetow, H., Sponagel, C., Bieling, C., Bleidorn, C., Breitkreuz, L., Hasenöhrl, U., Sommer, M., Tanneberger, F., Bruelheide, H., Muus, K., Schmidt, A., Settele, J., Sporbert, M. (2024): Agrar- und Offenland. In: Wirth, C., Bruelheide, H., Farwig, N., Marx, J., Settele, J. (eds.) Faktencheck Artenvielfalt. Bestandsaufnehme und Perspektiven für den Erhalt der biologischen Vielfalt in Deutschland. Oekom Verlag, Munich, Germany, pp. 217-356.
• Bartenschlager, R., Beck, E., Bradler, S., Caspari, C., Fischer, M., Freitag, J., Hennicke, L., Klein, A.M., Overmann, J., Palmetshofer, A., Schlacke, S., Schmitt, D., Hartman Scholz, A., Usadel, B. (2024): A decade after the Nagoya Protocol – German biodiversity researchers’ perspective. Statement of the Permanent Senate Commission on Fundamental Issues of Biological Diversity (SKBV) of the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation). https://www.dfg.de/resource/blob/343356/5868536ddd0288824b30880d6c6dd48f/240916-stellungnahme-nagoya-protokoll-data.pdf
• Li, Y., Schuldt, A., Ebeling, A., Eisenhauer, N., Huan, Y., Albert, G., Albracht, C., Amyntas, A., Bonowski, M., Bruelheide, H., Bröcher, M., Chesters, D., Chen, J., Chen, Y., Chen, J.T., Ciobanu, M., Deng, X., Fornoff, F., Gleixner, G., Guo, L., Guo, P.F., Heintz-Buschart, A., Klein, A.M., Lange, M., Li, S., Li, Q., Li, Y., Luo, A., Meyer, S.T., von Oheimb, G., Rutten, G., Scholten, T., Solbach, M.D., Staab, M., Wang, M.Q., Zhang, N., Zhu, C.D., Schmid, B., Keping, M., Liu, X. (2024): Plant diversity enhances ecosystem multifunctionality via multitrophic diversity. Nature Ecology and Evolution 8: 2037–2047, https://doi.org/10.1038/s41559-024-02517-2
• Wang, M.Q., Guo, S.K., Guo, P.F., Yang, J.J., Chen, G.A., Chesters, D., Orr, M., Niu, Z.Q.,  Staab, M., Chen, J.T., Li, Y., Zhou, Q.S., Fornoff, F., Shi, X., Li, S., Martini, M., Klein, A.M., Schuldt, A., Liu, X., Ma, K., Bruelheide, H., Luo, A. & Zhu, C.D. (2024): Multi-dimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition. eLife 13: RP100202. https://doi.org/10.7554/eLife.100202.1
• Jedicke, E., Brunzel, S., Darbi, M., von Haaren, C., Klein, A.M., Konold, W., Luick, R., Marschall, I., Niebert, K., Ott, K., Plieninger, T., Pröbstl-Haider, U., Reinke, M., Settele, J. & Tischew, S. (2024): Für eine zukunftsfähige Naturschutzverwaltung im 21. Jahrhundert. Teil 2: Lösungsansätze – ein Aufruf zu einem notwendigen Reformprozess. Naturschutz und Landschaftsplanung 56: 12–19. https://www.nul-online.de/themen/landschafts-und-umweltplanung/article-7930691-201982/teil-2-loesungsansaetze-ein-aufruf-zu-einem-notwendigen-reformprozess-.html
• Askri, D., Pottier, M., Arafah, K., Voisin, S.N., Hodge, S., Stout, J.C., Dominik, C., Schweiger, O., Tamburini, G., Pereira-Peixoto, M.H., Klein, A.M., Martínez López, V., De la Rúa, P., Cini, E., Potts, S.G., Schwarz, J.M., Knauer, A.C., Albrecht, M., Raimets, R., Karise, R., di Prisco, G., Ivarsson, K., Svensson, G.P., Ronsevych, O., Knapp, J.L., Rundlöf, M., Onorati, P., de Miranda, J.R., Bocquet, M. & Bulet, P. (2024): A blood test to monitor bee health across a European network of agricultural sites of different land-use by MALDI BeeTyping mass spectrometry. Science of the Total Environment 929: 172239. https://doi.org/10.1016/j.scitotenv.2024.172239
• Jedicke, E., Brunzel, S., Darbi, M., von Haaren, C., Klein, A.M., Konold, W., Luick, R., Marschall, I., Niebert, K., Ott, K., Plieninger, T., Pröbstl-Haider, U., Reinke, M., Settele, J. & Tischew, S. (2024): Für eine zukunftsfähige Naturschutzverwaltung im 21. Jahrhundert. Teil 1: Grundprobleme auf den drei Verwaltungsebenen in den Bundesländern. Naturschutz und Landschaftsplanung 56: 34–45. https://www.nul-online.de/themen/artenschutz-und-biotopverbund/article-7904351-201984/teil-1-grundprobleme-auf-den-drei-verwaltungsebenen-in-den-bundeslaendern-.html
• Laurent, M., Bourgeard, S., Cardadec, L, …, Klein, A.M., …, Pereira-Peixoto, H., …, Tamburini, G., …, Martel, A.C., Le, S. & Chauzat, M.P. (2024): Novel indices reveal that pollinator exposure to pesticides varies across biological compartments and crop surroundings. Science of the Total Environment 927: 172118. https://doi.org/10.1016/j.scitotenv.2024.172118
• Wittmann, K., Gamal Ibrahim, M., Straw, A.D., Klein, A.M. & Staab, M. (2024): Monitoring fast-moving animals – building a customized camera system and evaluation toolset. Methods in Ecology and Evolution 15, 836–842. https://doi.org/10.1111/2041-210X.14322
• Keil, L., Hunger, H. & Klein, A.M. (2024): Sparsely reeded areas as main reproductive habitat of Sympecma paedisca at Lake Constance (Odonata: Lestidae). Odonatologica 53: 133–153. https://doi.org/10.60024/odon.v53i1-2.a7
• Sheng, D., Jing, S., He, X., Klein, A.M., Köhler, H.R. & Wanger, T.C. (2024): Nano/micro-plastics effects in agricultural landscapes: an overlooked threat to pollination, biological pest control, and food security. arXiv (preprint). https://doi.org/10.48550/arXiv.2403.04920
• Babin, A., Schurr, F., Delannoy, S., …, Wintermantel, D., …, Klein, A.M., …, Pereira-Peixoto, H.M., …, Tamburini, G., … & Dubois, E. (2024): Distribution of infectious and parasitic agents among three sentinel bee species across European agricultural landscapes. Scientific Reports 14: 3524. https://doi.org/10.1038/s41598-024-53357-w
• Fornoff, F., Lanner, J., Orr, M., Xie, T., Guo, S., Guariento, E., Tuerlings, T., Smagghe, G., Parys, K., Ćetković, A., Bila Dubaić, J., Geslin, B., Scharnhorst, V.S., Pachinger, B., Klein, A.M. & Meimberg, H. (2024): Home-and-away comparisons of life history traits indicate enemy release and founder effects of the solitary bee, Megachile sculpturalis. Basic and Applied Ecology 76: 69–79. https://doi.org/10.1016/j.baae.2024.02.008
• Klaus, F., Ayasse, M., Classen, A., …, Fornoff, F., …, Klein, A.M., … & Pistorius, J. (2024): Improving wild bee monitoring, sampling methods, and conservation. Basic and Applied Ecology 75: 2–11. https://doi.org/10.1016/j.baae.2024.01.003
• Rappa, N.J., Staab, M., Ruppert, L.S., Frey, J., Mello, M.A.R. & Klein, A.M. (2024): Forest structure and heterogeneity increase diversity and alter composition of host-parasitoid networks. Ecological Entomology 49: 257–271. https://doi.org/10.1111/een.13301
• Nicholson, C.C., Knapp, J., Kiljanek, T., …, Klein, A.M., …, Pereira-Peixoto, M.H., …, Tamburini, G., … & Rundlöf, M. (2024): Pesticide use negatively affects bumble bees across European landscapes. Nature 628: 355–358. https://doi.org/10.1038/s41586-023-06773-3
• 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). https://doi.org/10.1101/2023.11.20.567831
• 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. https://doi.org/10.3897/arphapreprints.e115172
• Klein, A.M. (2023): Pflanzen-Insekten-Interaktionen: Insektenschutz zur Stabilität unserer Ökosysteme. Athene – Magazin der Heidelberger Akademie der Wissenschaften 2: 16–19. https://www.hadw-bw.de/sites/default/files/documents/Athene_2-2023.pdf
• Geschke, J., Rillig, M.C., Böhning-Gaese, K., Potthast, T., Arth, A., Dicks, 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. https://doi.org/10.1371/journal.pstr.0000083
• 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, Hamburg, Germany, pp. 115–128.
• 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. https://doi.org/10.1007/s11192-023-04852-w
• 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. https://doi.org/10.3897/arphapreprints.e112175
• Giménez-García, A., Allen-Perkin, A., Bartomeus, I., …, Klein, A.M., … & Magrach, A. (2023): Pollination supply models from local to global scale. Web Ecology 23: 99–129. https://doi.org/10.5194/we-23-99-2023
• 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. https://doi.org/10.1111/csp2.13008 (*These authors contributed equally to the study)
• Warrit, N., Ascher, J., Basu, P., …, Klein, A.M., …, Sritongchuay, T., … & Orr, M. (2023): Opportunities and challenges in Asian bee research and conservation. Biological Conservation 285: 110173. https://doi.org/10.1016/j.biocon.2023.110173
• 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. https://doi.org/10.1111/icad.12664
• Bottero, I., Dominik, C., Schweiger, O., Albrecht, M., …, Klein A.M., …, Pereira-Peixoto, H.M., …, Tamburini, G., … & 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. https://doi.org/10.3389/fevo.2023.1128228
• 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. http://doi.org/10.7717/peerj.15452
• 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. https://doi.org/10.1016/j.baae.2023.04.001
• 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. https://doi.org/10.1111/gcb.16697
• 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. https://doi.org/10.3897/arphapreprints.e101323
• 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. https://doi.org/10.1111/icad.12629
• 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. https://doi.org/10.1016/j.foreco.2022.120709
• Eckerter, T., Erbacher, J., Wolf, W., Braunisch, V. & Klein, A.M. (2023): Verges along forest roads promote wild bees. Forest Science 69: 167–177. https://doi.org/10.1093/forsci/fxac059
• Thompson, A., Mupepele, A.C. & Klein, A.M. (2022): Silent summer? Biodiversity loss, insect decline, and a call for conservation. GAIA 31: 193. https://doi.org/10.14512/gaia.31.4.1
• Tang, T., Zhang, N., Bongers, F., Staab, M., Schuldt, A., Fornoff, F., Lin, H., Cavender-Bares, J., Hipp, A., Li, S., Liang, Y., Han, B., Klein, A.M., Bruelheide, H., Durka, W., Schmid, B., Ma, K. & Liu, X. (2022): Tree species and genetic diversity increase productivity via functional diversity and trophic feedbacks. eLife 11: e78703. https://doi.org/10.7554/eLife.78703
• Eckerter, T., Braunisch, V., Buse, J. & Klein, A.M. (2022): Open forest successional stages and landscape heterogeneity promote wild bee diversity in temperate forests. Conservation Science and Practice 4: e12843. https://doi.org/10.1111/csp2.12843
• Georgi, M., Fornoff, F., Gärtner, S.M., Neitzel, S., Geist, A. & Klein, A.M. (2022): Timing and mulching frequency affected the number of nests of cavity-nesting wasps that hunt for aphids in forest meadows. Journal of Insect Conservation 26: 973–981. https://doi.org/10.1007/s10841-022-00442-y
• Knauer, A., Alaux, C., Matthew, A., Dean, R., Dievart, V., Glauser, G., Kiljanek, T., Michez, D., Schwarz, J., Tamburini, G., Wintermantel, D., Klein, A.M. & Albrecht, M. (2022): Nutritional stress exacerbates impact of a novel insecticide on solitary bees’ behaviour, reproduction and survival. Proceedings of the Royal Society B: Biological Sciences 289: 20221013. https://doi.org/10.1098/rspb.2022.1013
• Hodge, S., Schweiger, O., Klein, A.M., Potts, S.G., Costa, C., Albrecht, M., de Miranda, J.R., Mand, M., De la Rúa, P., Rundlöf, M., Attridge, E., Dean, R., Bulet, P., Michez, D., Paxton, R.J., Babin, A., Cougoule, N., Laurent, M., Martel, A.C., Paris, L., Rivière, M.P., Dubois, E., Chauzat, M.P., Arafah, K., Askri, D., Voisin, S.N., Kiljanek, T., Bottero, I., Dominik, C., Tamburini, G., Pereira-Peixoto, M.H., Wintermantel, D., Breeze, T.D., Cini, E., Senapathi, D., Di Prisco, G., Medrzycki, P., Hagenbucher, S., Knauer, A., Schwarz, J.M., Raimets, R., Martínez-López, V., Ivarsson, K., Hartfield, C., Hunter, P., Brown, M.J.F. & Stout, J.C. (2022): Design and planning of a transdisciplinary investigation into farmland pollinators: Rationale, co-design, and lessons learned. Sustainability 14: 10549. https://doi.org/10.3390/su141710549
• Osterman, J., Wintermantel, D. & Klein A.M. (2022): Welche Produkte Bienen gefährden. BWagrar 32: 16–17. https://www.bwagrar.de/article-7210438-162925/welche-produkte-bienen-gefaehrden-.html
• Osterman, J., Wintermantel, D. & Klein, A.M. (2022): Verbot von Sulfoxaflor – Der Nachfolger von Neonikotinoiden ist auch gefährlich. bienen&natur 8: 34–36. https://www.digitalmagazin.de/marken/bienennatur/hauptheft/2022-8/natur-wissen/034_verbot-von-sulfoxaflor
• Von Königslöw, V., Fornoff, F. & Klein, A.M. (2022): Wild bee communities benefit from temporal complementarity of hedges and flower strips in apple orchards. Journal of Applied Ecology 59: 2814–2824. https://doi.org/10.1111/1365-2664.14277
• Ollerton, J., Trunschke, J., Havens, K., Landaverde-González, P., Keller, A., Gilpin, A.M., Rodrigo Rech, A., Baronio, G.J., Phillips, B.J., Mackin, C., Stanley, D.A., Treanore, E., Baker, E., Rotheray, E.L., Erickson, E., Fornoff, F., Brearley, F.Q., Ballantyne, G., Iossa, G., Stone, G.N., Bartomeus, I., Stockan, J.A., Leguizamón, J., Prendergast, K., Rowley, L., Giovanetti, M., de Oliveira Bueno, R., Wesselingh, R.A., Mallinger, R., Edmondson, S., Howard, S.R., Leonhardt, S.D., Rojas-Nossa, S.V., Brett, M., Joaqui, T., Antoniazzi, R., Burton, V.J., Feng, H.H., Tian, Z.X., Xu, Q., Zhang, C., Shi, C.L., Huang, S.Q., Cole, L.J., Bendifallah, L., Ellis, E.E., Hegland, S.J., Straffon Díaz, S., Lander, T.A., Mayr, A.V., Dawson, R., Eeraerts, M., Armbruster, W.S., Walton, B., Adjlane, N., Falk, S., Mata, L., Goncalves Geiger, A., Carvell, C., Wallace, C., Ratto, F., Barberis, M., Kahane, F., Connop, S., Stip, A., Sigrist, M.R., Vereecken, N.J., Klein, A.M., Baldock, K., & Arnold, S.E.J. (2022): Pollinator-flower interactions in gardens during the COVID-19 pandemic lockdown of 2020. Journal of Pollination Ecology 32: 87–96. https://doi.org/10.26786/1920-7603(2022)695
• Rappa, N.J., Staab, M., Frey, J., Winiger, N. & Klein, A.M. (2022): Multiple forest structural elements are needed to promote beetle biomass, diversity and abundance. Forest Ecosystems 9: e100056. https://doi.org/10.1016/j.fecs.2022.100056
• Schwarz, J.M., Knauer, A.C., Allan, M.J., Dean, R.R., Ghazoul, J., Tamburini, G., Wintermantel, D., Klein, A.M. & Albrecht, M. (2022): No evidence for impaired solitary bee fitness following pre-flowering sulfoxaflor application alone or in combination with a common fungicide in a semi-field experiment. Environment International 164: 107252. https://doi.org/10.1016/j.envint.2022.107252
• Wintermantel, D., Pereira-Peixoto, M.H., Warth, N., Melcher, K., Faller, M., Feurer, J., Allan, M.J., Dean, R., Tamburini, G., Knauer, A.C., Schwarz, J.M., Albrecht, M. & Klein, A.M. (2022): Flowering resources modulate the sensitivity of bumblebees to a common fungicide. Science of The Total Environment 829: 154450. https://doi.org/10.1016/j.scitotenv.2022.154450
• Parreño, M.A., Alaux C., Brunet J.L., Buydens, L., Filipiak, M., Henry, M., Keller, A., Klein, A.M., Kuhlmann, M., Leroy, C., Meeus, I., Palmer-Young, E., Piot, N., Requier, F., Ruedenauer, F., Smagghe, G., Stevenson, P.C. & Leonhardt, S.D. (2022): Critical links between biodiversity and health in wild bee conservation. Trends in Ecology and Evolution 37: 309–321. https://doi.org/10.1016/j.tree.2021.11.013
• Eckerter, T., Braunisch, V., Pufal, G. & Klein, A.M. (2022): Small clear-cuts in managed forests support trap-nesting bees, wasps and their parasitoids. Forest Ecology and Management 509: 120076. https://doi.org/10.1016/j.foreco.2022.120076
• Klein, A.M., von Königslöw, V., Mupepele, A., Fornoff, F. & Wintermantel, D. (2022): Blühstreifen, Hecken und Spontanvegetation: Wie können wir Wildbienen im Obstanbau gezielt fördern? Journal für Kulturpflanzen 74: 11–18. https://doi.org/10.5073/JfK.2022.01-02.02
• Venjakob, C., Ruedenauer, F.A., Klein, A.M. & Leonhardt, S.D. (2022): Variation in nectar quality across 34 grassland plant species. Plant Biology 24: 134–144. https://doi.org/10.1111/plb.13343
• Moreaux, C., Meireles, D.A.L., Sonne, J., Badano, E.I., Classen, A., González-Chaves, A., Hipólito, J., Klein, A.M., Maruyama, P.K., Metzger, J.P., Philpott, S.M., Rahbek, C., Saturni, F.T., Sritangchuay, T., Tscharntke, T., Uno, S., Vergara, C.H., Viana, B.F., Strange, N. & Dalsgaard, B. (2022): The value of biotic pollination and the dense forest for fruit set of Arabica coffee: A global assessment. Agriculture, Ecosystems and Environment 323: 107680. https://doi.org/10.1016/j.agee.2021.107680
• Allen-Perkins, A., Magrach, A., Dainese, M., Garibaldi, L.A., Kleijn, D., Rader, R., …, Klein, A.M., … & Bartomeus, I. (2022): CropPol: a dynamic, open and global database on crop pollination. Ecology 103: e3614. https://doi.org/10.1002/ecy.3614
• Lawer, E.A., Mupepele, A.C., Love Darkoh, E., Farwig, N., Oware, S., Asiedu Larbi, J., Esslaw-Quayson, G. & Klein, A.M. (2022): Logging effects on parasitic infections in a swamp rat (Malacomys edwardsi) in West Africa. Journal of Mammalogy 103: 383–393. https://doi.org/10.1093/jmammal/gyab159
• Von Königslöw, V., Fornoff, F. & Klein, A.M. (2022): Pollinator enhancement in agriculture: Comparing sown flower strips, hedges and sown hedge herb layers in apple orchards. Biodiversity and Conservation 31: 433–451. https://doi.org/10.1007/s10531-021-02338-w
• Von Beckerath, X., Benadi, G., Gilg, O., Sittler, B., Yannic, G., Klein, A.M. & Eitzinger, B. (2022): Long-term monitoring reveals topographical features and vegetation explain winter habitat use of an arctic rodent. Arctic Science 8: 349–361. https://doi.org/10.1139/as-2021-0010
• Brown, M., Breeze, T., Bulet, P., Chauzat, M.P., Demirova, I., de Miranda, J., Klein, A.M., Mand, M., Metodiev, T., Michez, D., Nazzi, F., Neumann, P., Paxton, R., Potts, S., Stout, J., Turney, G. & Yañez, O. (2021): PoshBee: Pan-European assessment, monitoring, and mitigation of stressors on the health of bees. ARPHA Preprints. https://doi.org/10.3897/arphapreprints.e72231
• Mupepele, A.C., Bruelheide, H., Brühl, C., Dauber, J., Fenske, M., Freibauer, A., Gerowitt, B., Krüß, A., Lakner, S., Plieninger, T., Potthast, T., Schlacke, S., Seppelt, R., Stützel, H., Weisser, W., Wägele, W., Böhning-Gaese, K. & Klein, A.M. (2021): Biodiversity in European agricultural landscapes – transformative societal changes needed. Trends in Ecology and Evolution 36: 1067–1070. https://doi.org/10.1016/j.tree.2021.08.014
• Roquer-Beni, L., Alins, G., Arnan, X., Boreux, V., García, D., Hambäck, P., Happe, A.K., Klein, A.M., Miñarro, M., Mody, K., Porcel, M., Rodrigo, A., Samnegard, U., Tasin, M. & Bosch, J. (2021): Management-dependent effects of pollinator functional diversity on apple pollination services: a response-effect trait approach. Journal of Applied Ecology 58: 2843–2853. https://doi.org/10.1111/1365-2664.14022
• Von Königslöw, V., Mupepele, A.C. & Klein, A.M. (2021): Overlooked jewels: Existing habitat patches complement sown flower strips to conserve pollinators. Biological Conservation 261: 109263. https://doi.org/10.1016/j.biocon.2021.109263
• Tamburini, G., Pereira-Peixoto, M.H., Borth, J., Lotz, S., Wintermantel, D., Allan, M.J., Dean, R., Schwarz J.M., Knauer, A., Albrecht, M. & Klein, A.M. (2021): Fungicide and insecticide exposure adversely impacts bumblebees and pollination services under semi-field conditions. Environment International 157: 106813. https://doi.org/10.1016/j.envint.2021.106813
• Eckerter, T., Buse, J., Bauhus, J., Förschler, M.I. & Klein, A.M. (2021): Wild bees benefit from structural complexity enhancement in a forest restoration experiment. Forest Ecology and Management 496: 119412. https://doi.org/10.1016/j.foreco.2021.119412
• Klein, A.M. (2021): Dramatischer Rückgang – Insektenvielfalt braucht mehr Schutz. Forschung und Lehre 5: 360–362.
• Fornoff, F., Staab, M., Zhu, C.D. & Klein, A.M. (2021): Multi-trophic communities re-establish with canopy cover and microclimate in a subtropical forest biodiversity experiment. Oecologia 196: 289–301. https://doi.org/10.1007/s00442-021-04921-y
• Garratt, M.P.D., de Groot, A.G., Albrecht, M., Bosch, J., Breeze, T.D., Fountain, M., Klein, A.M., McKerchar, M., Park, M., Potts, S.G., Pufal, G., Rader, R., Senapathi, G.D., Andersson, G.K.S., Bernauer, O.M., Blitzer, E.J., Boreux, V., Campell, A. Foldensi, R., García, D., Garibaldi, L., Hambäck, P.A., Kirkitadze, G., Kovács-Hostyánski, A., Martins, K.T., McKendrick, L., Miñarro, M., Radzeviciute, R., Roquer, L., Samnegård, U., Vereecken, N.J. Webber, S.I, Japoshvili, G. & Zhusupbaeva, A. (2021): Opportunities to reduce pollination deficits and address production shortfalls in an important insect pollinated crop. Ecological Applications 31: e02445. https://doi.org/10.1002/eap.2445
• Hutchinson, L.A., Oliver, T.H., Breeze, T.D., Bailes, E.J., Boreux, V., Campbell, A.J., de Groot, G.A., Földesi, R., García, D., Hainaut, H., Hambäck, P.A., Holzschuh, A., Jauker, F., Kleijn, D., McKerchar, M., Miñarro, M., Potts, S.G., Pufal, G., Radzevičiūtė, R., Roberts, S.P.M., Samnegård, U., Vereecken, N.J., Westphal, C., Woodcock, B.A. & Garratt, M.P.D. (2021): Using ecological and field survey data to establish a national list of the wild bee pollinators of crops. Agriculture, Ecosystems and Environment 315: 107447. https://doi.org/10.1016/j.agee.2021.107447
• Marja, R., Klein, A.M., Viik, E. & Batáry, P. (2021): Environmentally-friendly and organic management practices enable complementary diversification of plant-bumblebee food webs. Basic and Applied Ecology 53: 164–174. https://doi.org/10.1016/j.baae.2021.03.013
• Guo, P.F., Wand, M.Q., Orr, M., Li, Y., Chen, J.T., Zhou, Q.S., Staab, M., Fornoff, F., Chen, G.H., Zhang, N.L., Klein, A.M., Zhu, C.D. (2021): Tree diversity promotes predatory wasps and parasitoids but not pollinator bees in a subtropical experimental forest. Basic and Applied Ecology 53: 134–142. https://doi.org/10.1016/j.baae.2021.03.007
• Senapathi, D., Fründ, J., Albrecht, M., Garratt, M., Kleijn, D., Pickles, B., …, Potts, S., … & Klein, A.M. (2021): Wild insect diversity increases inter-annual stability in global crop pollinator communities. Proceedings of the Royal Society B: Biological Sciences 288: 20210212. https://doi.org/10.1098/rspb.2021.0212
• Tamburini, G., Wintermantel, D., Allan, M.J., Dean, R.R., Knauer, A., Albrecht, M. & Klein, A.M. (2021): Sulfoxaflor insecticide and azoxystrobin fungicide have no major impact on honeybees in a realistic-exposure semi-field experiment. Science of the Total Environment 778: 146084. https://doi.org/10.1016/j.scitotenv.2021.146084
• Vanderplanck, M., Michez, D., …, Klein, A.M., …, Pereira-Peixoto, M.H., … & Gérard, M. (2021): Monitoring bee health in European agro-ecosystems using wing morphology and fat bodies. One Ecosystem 6: e63653. https://doi.org/10.3897/oneeco.6.e63653
• Lawer, E.A., Mupepele, A.C. & Klein, A.M. (2021): Artisanal mining impacts small mammals while chainsaw milling is a more sustainable practice in Ghana. Biodiversity and Conservation 30: 295–310. https://doi.org/10.1007/s10531-020-02089-0
• Staab, M., Liu, X.J., Assmann, T., Bruelheide, H., Buscot, F., Durka, W., Erfmeier, A., Klein, A.M., Ma, K., Michalski, S., Wubet, T., Schmid, B. & Schuldt, A. (2021): Tree phylogenetic diversity structures multitrophic communities. Functional Ecology 35: 521–534. https://doi.org/10.1111/1365-2435.13722
• Konold, W., Bauhus, J., Hein, S., Klein, A.M., Lenz, R., Pekrun, C., Steidle, J. & Wallner, K. (2020): Sonderprogramm zur Stärkung der biologischen Vielfalt der Landesregierung Baden-Württemberg. Abschlussbericht 2018 / 2019 – Evaluation durch das wissenschaftliche Fachgremium, Stand: 26.10.2020. pp. 1–66. https://mlr.baden-wuerttemberg.de/fileadmin/redaktion/m-mlr/intern/dateien/PDFs/Biodiv/2020_10_Abschlussbericht_Sonderprogramm_2018_2019.pdf
• Knuff, A., Staab, M., Frey, J., Dorman, C.F., Asbeck, T. & Klein, A.M. (2020): Insect abundance in managed forests benefits from multi-layered vegetation. Basic and Applied Ecology 48: 124–135. https://doi.org/10.1016/j.baae.2020.09.002
• Staab, M., Pereira-Peixoto, M.H. & Klein, A.M. (2020): Exotic garden plants partly substitute for native plants as resources for pollinators when native plants become seasonally scarce. Oecologia 194: 465–480. https://doi.org/10.1007/s00442-020-04785-8
• Wanger, T.C., DeClerck, F., Garibaldi, L.A., Ghazoul, J., Kleijn, D., Klein, A.M., Kremen, C., Mooney, H., Perfecto, I., Powell, L.L., Settele, J., Solé, M., Tscharntke, T. & Weisser, W. (2020): Integrating agroecological production in a robust post-2020 Global Biodiversity Framework. Nature Ecology & Evolution 4: 1150–1152. https://doi.org/10.1038/s41559-020-1262-y
• Roquer-Beni, L., Rodrigo, A., Arnan, X., Klein, A.M., Fornoff, F., Boreux, V. & Bosch, J. (2020): A novel method to measure hairiness in bees and other insect pollinators. Ecology and Evolution 10: 2979–2990. https://doi.org/10.1002/ece3.6112
• Pichler, M., Boreux, V., Klein, A.M., Schleuning, M. & Hartig, F. (2020): Machine learning algorithms to infer trait-matching and predict species interactions in ecological networks. Methods in Ecology and Evolution 11: 281–293. https://doi.org/10.1111/2041-210X.13329
• Gutiérrez-Chacón, C., Valderrama, A. & Klein, A.M. (2020): Biological corridors as important habitat structures for maintaining bees in a tropical fragmented landscape. Journal of Insect Conservation 24: 187–197. https://doi.org/10.1007/s10841-019-00205-2
• Klein, A.M. (2020): Book review: The solitary bees: biology, evolution, conservation. Danforth, B.N., Minckley, R.L., & Neff. J.L. Princeton University Press, Princeton, NJ, USA. Basic and Applied Ecology 43: 76. https://doi.org/10.1016/j.baae.2020.01.001
• Venjakob, C., Leonhardt, S.D. & Klein, A.M. (2020): Inter-individual nectar chemistry changes of Field Scabious, Knautia arvensis. Insects 11: 75. https://doi.org/10.3390/insects11020075
• Storch, I., Penner, J., Asbeck, T., Baile, M., Bauhus, J., Braunisch, V., Dormann, C., Frey, J., Gärtner, S., Hanewinkel, M., Koch, B., Klein, A.M., Kuss, T., Pregernig, M., Pyttel, P., Reif, A., Scherer-Lorenzen, M., Segelbacher, G., Schraml, U., Staab, M., Winkel, G. & Yousefpour, R. (2020): Evaluating the effectiveness of retention forestry to enhance biodiversity in production forests of Central Europe using an interdisciplinary, multi-scale approach. Ecology and Evolution 10: 1489–1509. https://doi.org/10.1002/ece3.6003
• Klein, A.M., Freitas, B.M., Bomfim, I.G.A., Boreux, V., Fornoff, F. & Oliveira, M.O. (2020): A Polinização Agrícola por Insetos no Brasil – Um Guia para Fazendeiros, Agricultores, Extensionistas, Políticos e Conservacionistas. Albert-Ludwigs University of Freiburg. http://dx.doi.org/10.6094/UNIFR/151237
• Klein, A.M., Freitas, B.M., Bomfim, I.G.A., Boreux, V., Fornoff, F. & Oliveira, M.O. (2020): Insect Pollination of Crops in Brazil – A Guide for Farmers, Gardeners, Politicians and Conservationists. Albert-Ludwigs of University Freiburg. http://dx.doi.org/10.6094/UNIFR/151200
• Klein, A.M. (2020): Welt ohne Insekten: Wenn die Technik helfen soll. In: Heinrich Böll Stiftung (ed.) Insektenatlas – Daten und Fakten über Nütz- und Schädlinge in der Landwirtschaft, pp. 44–45. https://www.boell.de/de/2020/01/08/welt-ohne-insekten-wenn-die-technik-helfen-soll
• Harvey, J.A., Heinen, R., Armbrecht, I., Basset, Y., Baxter-Gilbert, J.H., …, Klein, A.M., … & de Kroon, H. (2020): International scientists formulate a roadmap for insect conservation and recovery. Nature Ecology & Evolution 4: 174–176. https://doi.org/10.1038/s41559-019-1079-8
• Mupepele, A.C., Böhning-Gaese, K., Lakner S., Plieninger, T., Schoof, N. & Klein, A.M. (2019): Insect conservation in agricultural landscapes – An outlook for policy-relevant research. GAIA – Ecological Perspectives for Science and Society 4: 342–347. https://doi.org/10.14512/gaia.28.4.5
• Hines, J., Ebeling, A., Barnes, A., Brose, U., Scherber, C., Scheu, S., Tscharntke, T., Weisser, W.W., Giling, D.P., Klein, A.M. & Eisenhauer, N. (2019): Chapter Nine – Mapping change in biodiversity and ecosystem function research: Food webs foster integration of experiments and science policy. Advances in Ecological Research 61: 297–322. https://doi.org/10.1016/bs.aecr.2019.06.008
• Dainese, M., Martin, E.A., Aizen, M.A., Albrecht, M., Bartomeus, I., Bommarco, R., Carvalheiro, L.G., …, Klein, A.M., …, Tamburini, G., … & Steffan-Dewenter, I. (2019): A global synthesis reveals biodiversity-mediated benefits for crop production. Science Advances 5: eaax0121. https://doi.org/10.1126/sciadv.aax0121
• Klein, A.M. & Fornoff, F. (2019): Die Bestäubungsprofis. Deutsches Bienen Journal – Sonderheft: Wildbienen Spezial. pp. 30–31. https://shop.bienenjournal.de/Wildbienen-BienenJournal-Spezial
• Tscharnke, T. & Klein, A.M. (2019): Kaffee braucht Bienen für die Bestäubung – Feldforschung in Sulawesi. In: Jahreis, M., Marquart, S. & Möllers, N. (ed.) Kosmos Kaffee. Deutsches Museum, München, pp. 138–141.
• Samnegard, U., Alins, G., Boreux, V., Bosch, J., García, D., Happe, A.K., Klein, A.M., Miñarro, M., Mody, K., Porcel, M., Rodrigo, A., Roquer-Beni, L., Tasin, M. & Hambäck, P. (2019): Management trade-offs on ecosystem services in apple orchards across Europe: direct and indirect effects of organic production. Journal of Applied Ecology 56: 802–811. https://doi.org/10.1111/1365-2664.13292
• Klein, A.M. (2019): Das bunte Leben der Wildbienen. In: Settelen-Trees, D., Bregy, C. & Buschle, M. (eds.) Gespräche im Garten – Kultur, Natur, Gutes Leben: Tusculum auf Mapprach. Christoph Merian Verlag, Basel, pp. 91–97.
• Von Königslöw, V., Klein, A.M., Staab, M. & Pufal, G. (2019): Benchmarking nesting aids for cavity-nesting bees and wasps. Biodiversity and Conservation 28: 3831–3849. https://doi.org/10.1007/s10531-019-01853-1
• Breeze, T.D., Boreux, V., Cole, L., Dicks, L., Klein, A.M., Pufal, G., Balzan, M., Bevk, D., Bortolotti, L., Petanidou, T., Mand, M., Pinto, M.A., Scheper, J., Stanisavljevic, L., Stavrinides, M.C., Tscheulin, T., Varnava, A. & Kleijn, D. (2019): Linking farmer and beekeeper preferences with ecological knowledge to improve crop pollination. People and Nature 1: 562–572. https://doi.org/10.1002/pan3.10055
• Nitsch, H., Fornoff, F., Bauer, C., Sauer, N., Schäfer, L., Wunderlich, L., Claßen, A., Pabst, H., Schramek, J. & Klein, A.M. (2019): Ad hoc-Studie zur faunistischen Bewertung von FAKT-Blühmischungen. Institut für ländliche Strukturforschung, Frankfurt. https://www.ifls.de/fileadmin/user_upload/Abbildungen/Publikationen/2024/2019_Bl%C3%BChfl%C3%A4chenstudie_Bericht.pdf
• Miczajka, V.L., Klein, A.M. & Pufal, G. (2019): Slug activity density increases seed predation independently of an urban-rural gradient. Basic and Applied Ecology 39: 15–25. https://doi.org/10.1016/j.baae.2019.07.003
• Knuff, A., Winiger, N., Klein, A.M., Segelbacher, G. & Staab, M. (2019): Optimising sampling of flying insects using a modified window trap. Methods in Ecology and Evolution 10: 1820–1825. https://doi.org/10.1111/2041-210X.13258
• Marja, R., Kleijn, D., Tscharntke, T., Klein, A.M., Frank, T. & Batáry, P. (2019): Effectiveness of agri-environmental management on pollinators is moderated more by ecological contrast than by landscape structure or land-use intensity.  Ecology letters 22: 1493–1500. https://doi.org/10.1111/ele.13339
• Manning, P., Loos, J., Barnes, A.D., …, Klein, A.M., … & Tscharnke, T. (2019): Transferring biodiversity ecosystem function research to the management of ‘real world’ ecosystems. Advances in Ecological Research. 61: 323–356. https://doi.org/10.1016/bs.aecr.2019.06.009
• Knuff, A., Staab, M., Frey, J., Helbach, J. & Klein, A.M. (2019): Plant composition, not richness, drives occurrence of specialist herbivores. Ecological Entomology 44: 833–843. https://doi.org/10.1111/een.12767
• Mupepele, A.C., Bruelheide, H., Dauber, J., Kruess, A., Potthast, T., Wägele, W. &  Klein, A.M. (2019):  Insect decline and their drivers: Unsupported conclusions in a poorly performed meta-analysis on trends – A critique of Sánchez-Bayo and Wyckhuys (2019). Basic and Applied Ecology 37: 20–23. https://www.sciencedirect.com/science/article/pii/S1439179119301094?via%3Dihub
• Lawer, E.A., Mupepele, A.C. & Klein, A.M. (2019): Responses of small mammals to land restoration after mining. Landscape Ecology 34: 473–485. https://doi.org/10.1007/s10980-019-00785-z
• Schuldt, A., Ebeling, A., Kunz, M., Staab, M., Guimarães-Steinicke, C., Bachmann, D., Buchmann, N., Durka, W., Fichtner, A., Fornoff, F., Härdtle, W., Hertzog, L., Klein, A.M., Roscher, C., Schaller, J., von Oheimb, G., Weigelt, A., Weisser, W., Wirth, C., Zhang, J., Bruelheide, H. & Eisenhauer, N. (2019): Multiple plant diversity components drive consumer communities across ecosystems. Nature Communications 10: 1460. https://doi.org/10.1038/s41467-019-09448-8
• Fornoff, F., Klein, A.M., Blüthgen, N. & Staab, M. (2019): Tree diversity increases robustness of multi-trophic interactions. Proceedings of the Royal Society B: Biological Sciences 286: 20182399. https://doi.org/10.1098/rspb.2018.2399
• Drescher, N., Klein, A.M., Schmitt, T. & Leonhardt, S.D. (2019): A clue on bee glue: New insight into the sources and factors driving resin intake in honeybees (Apis mellifera). PLOS One 14: e0210594. https://doi.org/10.1371/journal.pone.0210594
• Happe, A.K., Alins, G., Blüthgen, N., Boreux, V., Bosch, J.; Garía, D., Hambäck, P.A., Klein, A.M., Martínez-Sastre, R., Miñarro, M., Müller, A.K., Porcel, M., Rodrigo, A., Roquer-Beni, L., Samnegard, U., Tasin, M. & Mody, K. (2019): Predatory arthropods in apple orchards across Europe: responses to agricultural management, adjacent habitat, landscape composition and country. Agriculture, Ecosystems & Environment 273: 141–150. https://doi.org/10.1016/j.agee.2018.12.012
• Huang, Y., Chen, Y., Castro-Izaguirre, N., Baruffol, M., Brezzi, M., Lang, A., Li, Y., Härdtle, W., von Oheimb, G., Yang, X., Liu, X., Pei, K., Both, S., Yang, B., Eichenberg, D., Assmann, T., Bauhus, J., Behrens, T., Buscot, F., Chen, X.-Y., Chesters, D., Ding, B.-Y., Durka, W., Erfmeier, A., Fang, J., Fischer, M., Guo, L.-D., Guo, D., Gutknecht, J.L.M., He, J.-S., He, C.-L., Hector, A., Hönig, L., Hu, R.-Y., Klein, A.M., Kühn, P., Lian, Y., Li, S., Michalski, S., Scherer-Lorenzen, M., Schmidt, K., Scholten, T., Schuldt, A., Xhi, X., Tan, M.-Z., Tang, Z., Trosich, S., Wang, Z., Welk, E., Wirth, C., Wubet, T., Xiang, W., Yu, M., Yu, X.-D., Zhang, J., Zhang, S., Zhang, N., Zhou, H.-Z., Zhu, C.-D., Zhu, L., Bruelheide, H., Ma, K., Niklaus, P.A. & Schmidt, B. (2018): Impact of species richness on productivity in a large-scale subtropical forest experiment. Science 362: 80–83. https://doi.org/10.1126/science.aat6405
• Rai, B., Klein, A.M. & Walter, J. (2018): Chronic dryness and wetness and especially pulsed drought threaten a generalist arthropod herbivore. Oecologia 188: 931–943. https://doi.org/10.1007/s00442-018-4255-7
• Kaluza, B., Wallace, H., Heard, T., Minden, V., Klein, A.M. & Leonhardt, S. (2018): Social bees are fitter in more biodiverse environments. Scientific Reports 8: 12353. https://doi.org/10.1038/s41598-018-30126-0
• Staab, M., Pufal, G., Tscharntke, T. & Klein, A.M. (2018): Trap nests for bees and wasps to analyse trophic interactions in changing environments – a systematic overview and user guide.  Methods in Ecology and Evolution 9: 2226–2239. https://doi.org/10.1111/2041-210X.13070
• Schuldt, A., Assmann, T., Brezzi, M., Buscot, F., Eichenberg, D., Gutknecht, J., Härdtle, W., He, J.S., Klein, A.M., Kühn, P., Liu, X., Ma, K., Niklaus, P.A., Pietsch, K.A., Purahong, W., Scherer-Lorenzen, M., Schmid, B., Scholten, T., Staab, M., Tang, Z., Trogisch, S., von Oheimb, G., Wirth, C., Wubet, T., Zhu, C.D. & Bruelheide, H. (2018): Biodiversity across trophic levels drives multifunctionality in highly diverse forests. Nature Communications 9: 2989. https://doi.org/10.1038/s41467-018-05421-z
• Kőrösi, Á., Markó, V., Kovács-Hostyánszki, A., Somay, L., Varga, Á., Elek, Z., Boreux, V., Klein, A.M., Földesi, R. & Báldi, A. (2018): Climate-induced phenological shift of apple trees has diverse effects on pollinators, herbivores and natural enemies. PeerJ 6: e5269. https://doi.org/10.7717/peerj.5269
• Binkenstein, J., Klein, A.M., Assmann, T., Buscot, F., Erfmeier, A., Ma, K., Pietsch, K.A., Schmidt, K., Scholten, T., Wubet, T., Bruelheide, H., Schuldt, A. & Staab, M. (2018): Multi-trophic guilds respond differently to changing elevation in a subtropical forest. Ecography 41: 1013–1023. https://doi.org/10.1111/ecog.03086
• Delzeit, R., Lewandowski, I., Arslan, A., Cadisch, G., Erisman, J.W., Ewert, F., Klein, A.M., von Haaren, C., Lotze-Campen, H., Mauser, W., Plieninger, T., Ratjen, A., Tekken, V., Wolters, V. & Brüggemann, N. (2018): How the sustainable intensification of agriculture can contribute to the Sustainable Development Goals. The need for specific socio-ecological solutions at all spatial levels. German Committee Future Earth. Working Paper No. 18/1. https://www.dfg.de/resource/blob/173168/af46c92c6334c626c4b171f268feaf72/ag-future-earth-arbeitspapier-2018-data.pdf
• Gutiérrez-Chacón, C., Fornoff, F., Ospina-Torres, R. & Klein, A.M. (2018): Pollination of granadilla (Passiflora ligularis) benefits from large wild insects. Journal of Economic Entomology 111: 1526–1534. https://doi.org/10.1093/jee/toy133
• Cao, H., Klein, A.M., Zhu, C.-D., Staab, M., Durka, W., Fischer, M. & Fornoff, F. (2018): Intra- and interspecific tree diversity promotes multitrophic plant–Hemiptera–ant interactions in a forest diversity experiment. Basic and Applied Ecology 29: 89–97. https://doi.org/10.1016/j.baae.2018.03.005
• Klein, A.M., Fornoff, F., Mupepele, A.C., Boreux, V. & Pufal, G. (2018): Relevance of wild and managed bees for human well-being. Current Opinion in Insect Science 26: 82–88. https://doi.org/10.1016/j.cois.2018.02.011
• Gutiérrez-Chacón, C., Dormann, C.F. & Klein, A.M. (2018): Forest-edge associated bees benefit from the proportion of tropical forest regardless of its edge length. Biological Conservation 220: 149–160. https://doi.org/10.1016/j.biocon.2018.02.009
• Henselek, Y., Eilers, J.E., Kremen, C., Hendrix, S.D. & Klein, A.M. (2018): Pollination requirements of almond (Prunus dulcis) – Combining laboratory and field experiments. Journal of Economic Entomology 111: 1006–1013. https://doi.org/10.1093/jee/toy053
• Gutiérrez-Chacón, C., Pantoja-Santacruz, J. & Klein, A.M. (2018): Floral larceny by the stingless bee Trigona amalthea on granadilla (Passiflora ligularis Juss). Journal of Pollination Ecology 22: 75–81. https://doi.org/10.26786/1920-7603(2018)eight
• Marja, R., Viik, E., Mänd, M., Philips, J., Klein, A.M. & Batáry, P. (2018): Crop rotation and agri-enviroment schemes determine bumblebee communities via flower resources. Journal of Applied Ecology 55: 1714–1724. https://doi.org/10.1111/1365-2664.13119
• Dudenhöffer, J.H., Ebeling, A., Klein, A.M. & Wagg, C. (2018): Beyond biomass: soil feedbacks are transient over plant life-stages and alter fitness. Journal of Ecology 106: 230–241. https://doi.org/10.1111/1365-2745.12870
• Müller, M., Klein, A.M., Scherer-Lorenzen, M., Nock, C.A. & Staab, M. (2018): Tree genetic diversity increases arthropod diversity in willow short rotation coppice. Biomass and Bioenergy 108: 338–344. https://doi.org/10.1016/j.biombioe.2017.12.001
• Kehinde, T., Brittain, C., von Wehrden, H., Samways, M. & Klein, A.M. (2018): Organic farming promotes bee abundance in vineyards in Italy but not in South Africa. Journal of Insect Conservation 22: 61–67. https://doi.org/10.1007/s10841-017-0038-4
• Schoof, N., Luick, R. & Klein, A.M. (2017): Unerwartete Erfahrungen aus einem Reallabor mit Wald-Offenlandbeweidung bei Freiburg im Breisgau. Naturschutz und Landschaftsplanung 48: 397–399.
• Meyer, S., Ptacnik, R., Hillebrand, H., Bessler, H., Buchmann, N., Ebeling, A., Eisenhauer, N., Engels, C., Fischer, M. Halle, S., Klein, A.M., Oelmann, Y., Roscher, C., Rottstock, T., Scherber, C., Scheu, S. Schmid, B., Schulze, E.D., Temperton, V., Tscharntke, T., Voigt, W.,  Weigelt, A., Wilcke, W. & Weisser, W. (2017): Biodiversity–multifunctionality relationships depend on identity and number of measured functions. Nature Ecology & Evolution 2: 44–49. https://doi.org/10.1038/s41559-017-0391-4
• Trogisch, S., …, Klein, A.M., …, Staab, M., … & Bruelheide H. (2017): Towards a methodical framework for comprehensively assessing forest multifunctionality. Ecology and Evolution 7: 10652–10674. https://doi.org/10.1002/ece3.3488
• Staniczenko, P., Lewis, O. Tylianakis, J., Albrecht, M., Coudrain, V.,Klein, A.M. & Reed-Tsochas, F. (2017): Predicting the effect of habitat modification on networks of interacting species. Nature Communications 8: 792. https://doi.org/10.1038/s41467-017-00913-w
• Schuldt, A., Fornoff, F., Bruelheide, H., Klein, A.M. & Staab, M. (2017): Tree species richness attenuates the positive relationship between mutualistic ant-hemipteran interactions and leaf chewer herbivory. Proceedings of the Royal Society B: Biological Sciences 284: 20171489. https://doi.org/10.1098/rspb.2017.1489
• Pufal, G., Steffan-Dewenter, I. & Klein, A.M. (2017): Crop pollination services at the landscape scale. Current Opinion in Insect Science 21: 91–97. https://doi.org/10.1016/j.cois.2017.05.021
• Schuldt, A., Bruelheide, H., Assmann, T., Buscot, F., Erfmeier, A., Klein, A.M., Ma, K., Scholten, T., Staab, M., Wirth, C., Zhang, J. & Wubet, T. (2017): Belowground top-down and aboveground bottom-up effects structure multitrophic communities in a biodiverse forest. Scientific Reports 7: 4222. https://doi.org/10.1038/s41598-017-04619-3
• Staab, M., Fornoff, F., Klein, A.M. & Blüthgen, N. (2017): Ants at plant wounds – A little-known trophic interaction with evolutionary implications for ant-plant interactions. American Naturalist 190: 442–450. https://doi.org/10.1086/692735
• Lichtenberg, E.M., Kennedy, C.M., Kremen, C., Batary, P., Berendse, F., Bommarco, R., Bosque-Perez, N.A., Carvalheiro, L.G., Snyder, W.E., William, Williams, N.M., Winfree, R., Astrom, S., Benjamin, F., Brittain, C., Chaplin-Kramer, R., Clough, Y., Connelly, H., Danforth, B., Diekotter, T., Eigenbrode, S.D., Ekroos, J., Elle, E., Freitas, B.F., Fukuda, Y., Gaines-Day, H.R., Gratton, C., Holzschuh, A., Isaacs, R., Isaia, M., Jha, S., Jonason, D., Jones, V.P., Klatt, B., Klein, A.M., Krauss, J., Letourneau, D.K., Macfadyen, S., Mallinger, R.E., Martin, E.A., Martinez, E., Memmott, J., Morandin, L., Neame, L., Otieno, M.,. Park, M.G., Pfiffner, L., Pocock, M., Ponce, C., Potts, S.G., Poveda, K., Ramos, M., Rosenheim, J.A., Rundlof, M., Sardinas, H., Saunders, M.E., Schon, N.L., Sciligo, A.R., Sidhu, C.S., Steffan-Dewenter, I., Tscharntke, T., Vesely, M., Weisser, W.W., Wilson, J.K. & Crowder, D.W. (2017): A global synthesis of the effects of diversified farming systems on arthropod diversity within fields and across agricultural landscapes. Global Change Biology 23: 4946–4957. https://doi.org/10.1111/gcb.13714
• Ma, K., He, J.S., Bruelheide, H., Klein, A.M., Liu, X. & Schmid, B. (2017): Biodiversity–ecosystem functioning research in Chinese subtropical forests. Journal of Plant Ecology 10: 1–3. https://doi.org/10.1093/jpe/rtw129
• Staab, M., Methorst, J., Peters, J., Blüthgen, N. & Klein, A.M. (2017): Tree diversity and nectar composition affect arthropod visitors on extrafloral nectaries in a diversity experiment. Journal of Plant Ecology 10: 201–212. https://doi.org/10.1093/jpe/rtw017
• Fornoff, F., Klein, A.M., Hartig, F., Benadi, G., Venjakob, C., Schaefer, M. & Ebeling, A. (2017): Functional flower traits and their diversity drive pollinator visitation. Oikos 126: 1020–1030. https://doi.org/10.1111/oik.03869
• Becker, N., Schön, S., Klein, A.M., Ferstl, I., Kizgin, A., Tannich, E., Kuhn, C., Pluskota, B. & Jöst, A. (2017): First mass development of Aedes albopictus (Diptera: Culicidae)—its surveillance and control in Germany. Parasitology Research 116: 847–858. https://doi.org/10.1007/s00436-016-5356-z
• Drescher, N., Klein, A.M., Neumann, P., Yañez, O. & Leonhardt, S. (2017): Inside honeybee hives: Impact of natural propolis on the ectoparasitic mite Varroa destructor and viruses. Insects 8: 15. https://doi.org/10.3390/insects8010015
• Eardley, C., Freitas, B. M., Kevan, P.G., Rader, R., Gikungu, M., Klein, A.M., Maus, C., Meléndez-Ramírez, V. Palni, L.M.S., Vergara, C.H., & Wiantoro S. (2016): Chapter 1: Background to pollinators, pollination and food production. In: Potts, S.G., Imperatriz-Fonseca, V.L., & Ngo, H.T. (eds.) Assessment report of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services on pollinators, pollination and food production. Secretariat of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services, Bonn, Germany. https://doi.org/10.5281/zenodo.3402856
• Meyer, S.T., Ebeling, A., …, Hudewenz, A., Klein, A.M, … & Weisser, W.W. (2016): Effects of biodiversity strengthen over time as ecosystem functioning declines at low and increases at high biodiversity. Ecosphere 7: e01619. https://doi.org/10.1002/ecs2.1619
• Gossner, M.M., Lewinsohn, T.M., Kahl, T., Grassein, F., Boch, S., Prati, D., Birkhofer, K., Renner, S.C., Sikorski, J., Wubet, T., Arndt, H., Baumgartner, V., Blaser, S., Blüthgen, N., Börschig, Buscot, F., C., Diekötter, T., Jorge, L.R., Jung, K., Keyel, A.C., Klein, A.M., Klemmer, S., Krauss, J., Lange, M., Müller, J., Overmann, J., Pašalić, E., Penone, C., Perović, D.J., Purschke, O., Schall, P., Socher, S.A., Sonnemann, I., Tschapka, M., Tscharnke, T., Türke, M., Venter, P.C., Weiner, C.N., Werner, M., Wolters, V., Wurst, S., Westphal, C., Fischer, M., Weisser, W.W. & Allan, E. (2016): Land-use intensification causes multitrophic homogenization of grassland communities. Nature 540: 266–269. https://doi.org/10.1038/nature20575
• Maneke, A. & Klein, A.M. (2016): Untersuchungen zur Konkurrenz zwischen Honigbienen und Wildbienen in der Lüneburger Heide. Naturwissenschaftlicher Verein für das Fürstentum Lüneburg von 1851 e.V. 46: 121–132.
• Boch, S., Allan, E., Birkhofer, K., Bossdorf, O., Blüthgen, N., Christ-Breulmann, S., Diekötter, T., Dormann, C.F., Gossner, M.M., Hallmann, C., Hemp, A., Hölzel, N., Jung, K., Klaus, V.H., Klein, A.M., Kleinbecker, T., Lange, M., Müller, J., Hacke, H., Prati, D., Renner, S.C., Rothenwörer, C., Schall, P., Schluze, E.D., Socher, S.A., Tscharntke, T., Türke, M., Weiner, C.N., Weisser, W.W., Westphal, C., Wolters, V., Wubet, T. & Tischer, M. (2016): Extensive und jährlich wechselnde Nutzungsintensität fördert den Artenreichtum im Grünland. ANLiegen Natur 38: 86–95.
• Walmsley, D., Bailis, R. & Klein, A.M. (2016): A global synthesis of Jatropha cultivation: Insights into land use change and management practices. Environmental Science & Technology 50: 8993–9002. http://dx.doi.org/10.1021/acs.est.6b01274
• Staab, M., Bruelheide, H., Durka, W., Michalski, S., Purschke, O., Zhu C.D. & Klein, A.M. (2016): Tree phylogenetic diversity promotes host-parasitoid interactions. Proceedings of the Royal Society B: Biological Sciences 283: 20160275. https://doi.org/10.1098/rspb.2016.0275
• Plath, M., Moser, C., Bailis, R., Brandt, P., Hirsch, H., Klein, A.M., Walmsley, D. & von Wehrden, H. (2016): A novel bioenergy feedstock in Latin America? Cultivation potential of Acrocomia aculeata under current and futur conditions. Biomass and Bioenergy 91: 186–195. https://doi.org/10.1016/j.biombioe.2016.04.009
• Klein, A.M. (2016): Fliegen, Motten, Wanzen. Honig- und Wildbienen haben viele Helfer, doch ersetzbar sind sie nicht. ADIZ – Die Biene – Imkerfreund April 2016, pp. 34–36.
• Motzke, I., Klein, A.M., Saleh, S., Wanger, T.C. & Tscharntke, T. (2016): Habitat management on multiple spatial scales can enhance bee pollination and crop yield in tropical homegardens. Agriculture, Ecosystems & Environment 223: 144–151. https://doi.org/10.1016/j.agee.2016.03.001
• Dudenhöffer, J.H., Pufal, G., Roscher, C. & Klein, A.M. (2016): Plant density can increase invertebrate post-dispersal seed predation in an experimental grassland community. Ecology and Evolution 6: 3796–3807. https://doi.org/10.1002/ece3.2039
• Venjakob, C., Klein, A.M., Ebeling, A., Tscharntke, T. & Scherber, C. (2016): Plant diversity increases spatio-temporal niche complementarity in plant-pollinator interactions. Ecology and Evolution 6: 2249–2261. https://doi.org/10.1002/ece3.2026
• Kaluza, B.F., Wallace, H., Heard, T.A., Klein, A.M. & Leonhardt, S.D. (2016): Urban gardens promote bee foraging over natural habitats and plantations. Ecology and Evolution 6: 1304–1316. https://doi.org/10.1002/ece3.1941
• Soliveres, S., Manning, P., Prati, D., Gossner, M.M., Alt, F., Arndt, H., Baumgartner, V., Binkenstein, J., Birkhofer, K., Blaser, S., Blüthgen, N., Boch, S., Böhm, S., Börschig, C., Buscot, F., Diekötter, T., Heinze, J., Hölzel, N., Jung, K., Klaus, V.H., Klein, A.M., Kleinebecker, T., Klemmer, S., Krauss, J., Lange, M., Morris, E.K., Müller, J., Oelmann, Y., Overmann, J., Pašalić, E., Renner, S.C., Rillig, M.C., Schaefer, H.M., Schloter, M., Schmitt, B., Schöning, I., Schrumpf, M., Sikorski, J., Socher, S.A., Solly, E.F., Sonnemann, I., Sorkau, E., Steckel, J., Steffen-Dewenter, I., Stempfhuber, B., Tschapka, M., Türke, M., Venter, P., Weiner, C.N., Weisser, W.W., Werner, M., Westphal, C., Wilcke, W., Wolters, V., Wubet, T., Wurst, S., Fischer, M. & Allan, E. (2016): Locally rare species influence grassland ecosystem multifunctionality. Philosophical Transactions of the Royal Society B 371: 20150269. https://doi.org/10.1098/rstb.2015.0269
• Peixoto-Pereira, M.H., Pufal, G., Staab, M., Martins, C.F. & Klein, A.M. (2016): Diversity and specificity of host-natural enemy interactions in an urban-rural interface. Ecological Entomology 41: 241–252. https://doi.org/10.1111/een.12291
• Garibaldi, L.A., Aizen, M.A., Cunningham, S.A., Harder, L.D. & Klein, A.M. (2016): Incremental contribution of pollination and other ecosystem services to agricultural productivity: effects of service quantity and quality. In: Gemmill-Herren, B. (eds.) Pollination services to Agriculture: Sustaining and enhancing a key ecosystem service (Issues in Agricultural Biodiversity). Routledge, Abingdon, pp. 33–42.
• Rader, R., Bartomeus, I., Garibaldi, L., Garratt, M.P.D., Howlett, B., Winfree, R., Cunningham, S.A., Mayfield, M.M., Arthur, A.D., Andersson, G.K.S., Blanche, R., Bommarco, R., Brittain, C., Carvalheiro, L.G., Chacoff, N.P, Entling, M.H., Foully, B., Freitas, B.M., Gemmill-Herren, B., Ghazoul, J., Griffin, S., Gross, C.L., Herbertsson, L., Herzog, F., Hipólito, J., Jaggar, S., Jauker, F., Klein, A.M., Kleijn, D., Krishnan, S., Queiroz Lemos, C., Lindström, S.A.M., Mandelik, Y., Magalhães Monteiro, V., Nelson, W., Nilsson, L., Pattemore, D., de O. Pereira, N., Pisanty, G., Potts, S.G., Reemer, M., Rundlöf, M., Sheffield, C.S., Scheper, J., Schüepp, C., Smith, H.G., Stanley, D.A., Stout, K.C., Szentgyörgyi, H., Taki, H., Vergara, C.H., Viana, B.F. & Woyciechowski, M. (2016): Non-bee insects are important contributors to global crop pollination. Proceedings of the National Academy of Sciences 113: 146–151.
• Schuldt, A., Wubet, T., Buscot, F., Staab, M., Assmann, T., Böhnke-Kammerlander, M., Both, S., Erfmeier, A., Klein, A.M., Ma, K., Pietsch, K., Schultze, S., Wirth, C., Zhang, J., Zumstein, P. & Bruelheide, H. (2015): Multitrophic diversity in a biodiverse forest is highly nonlinear across spatial scales. Nature Communications 6: 10169. https://doi.org/10.1038/ncomms10169
• Miczajka, V.L., Klein, A.M. & Pufal, G. (2015): Elementary school children contribute to environmental research as citizen scientists. PLOS One 10: e0143229. https://doi.org/10.1371/journal.pone.0143229
• Klein, A.M. (2015): Was wäre wenn? Die Bedeutung von Bienen und anderen Bestäubern für unsere Ernährung. AZID – Die Biene – Imkerfreund, Dezember 2015, pp. 14–18.
• Hudewenz, A. & Klein, A.M. (2015): Red mason bees cannot compete with honey bees for floral resources in a cage experiment. Ecology and Evolution 5: 5049–5056. https://doi.org/10.1002/ece3.1762
• Gámez-Virués, S., Perovic, D., Gossner, M., Börschig, C., Blüthgen, N., de Jong, H., Simons, N., Klein, A.M., Krauss, J., Maier, G., Scherber, C., Steckel, J., Rothenwöhrer, C., Steffan-Dewenter, I., Weiner, C., Weisser, W.W., Werner, M., Tscharntke, T. & Westphal, C. (2015): Landscape simplification filters species traits and drives biotic homogenization. Nature Communications 6: 8568. https://doi.org/10.1038/ncomms9568
• Pufal, G. & Klein, A.M. (2015): Spatial scale affects seed predation and dispersal in contrasting anthropogenic landscapes. Basic and Applied Ecology 16: 726–736. https://doi.org/10.1016/j.baae.2015.07.003
• Garibaldi, L., Bartomeus, I., Bommarco, R.,Klein, A.M., Cunningham, S.A., Aizen, M., Boreux, V., Garratt, M., Carvalheiro, L.G., Kremen, C., Morales, C., Schüepp, C., Chacoff, N., Freitas, B., Gagic, V., Holzschuh, A., Klatt, B., Krewenka, K., Krishnan, S., Mayfield, M., Motzke, I., Otieno, M., Petersen, J., Potts, S.G., Ricketts, T.H., Rundlöf, M., Sciligo, A., Sinu, P.A., Steffan-Dewenter, I., Taki, H., Tscharntke, T., Vergara, C.H., Viana, B.F. & Woyciechowski, M. (2015): Trait matching of flower visitors and crops predicts fruit set better than trait diversity. Journal of Applied Ecology 52: 1436–1444. https://doi.org/10.1111/1365-2664.12530
• Staab, M., Blüthgen, N. & Klein, A.M. (2015): Tree diversity alters the structure of a tri-trophic network in a biodiversity experiment. Oikos 124: 827–834. https://doi.org/10.1111/oik.01723
• Schäckermann, J., Pufal, G., Mandelik, Y. & Klein, A.M. (2015): Agro-ecosystem services and dis-services in almond orchards are differentially influenced by the surrounding landscape. Ecological Entomology 40: 12–21. https://doi.org/10.1111/een.12244
• Baumgärtner, S., Klein, A.M., Thiel, D. & Winkler, K. (2015): Ramsey discounting of ecosystem services. Enviromental and Resource Economics 61: 273–296. https://doi.org/10.1007/s10640-014-9792-x
• Kleijn, D., Winfree, R., Bartomeus, I., Carvalheiro, L.G., Henry, M., Isaacs, R., Klein, A.M., Kremen, C., M’Gonigle, L.K., Rader, R., Ricketts, T., Williams, N.M., Adamson, N.L., Ascher, J.S., Báldi, A., Batáry, P., Benjamin, F., Biesmeijer, J.C., Blitzer, E.J., Bommarco, R., Brand, M.R., Bretagnolle, V., Button, L., Cariveau, D.P., Chifflet, R., Colville, J.F., Danforth, B.N., Elle, E., Garratt, M.P.D., Herzog, F., Holzschuh, A., Howlett, B.G., Jauker, F., Jha, S., Knop, E., Krewenka, K.M., Le Féon, V., Mandelik, Y., May, E.A., Park, M.G., Pisanty, G., Reemer, M., Riedinger, V., Rollin, O., Rundlöf, M., Sardiñas, H.,S., Scheper, J., Sciligo, A.R., Smith, H.G, Steffan-Dewenter, I., Thorp, R., Tscharntke, T., Verhulst, J., Viana, B.F., Vaissière, B.E., Veldtman, R., Westphal, C. & Potts, S.G. (2015): Delivery of crop pollination services is an insufficient argument for wild pollinator conservation. Nature Communications 6: 7414. https://doi.org/10.1038/ncomms8414
• Klein, A.M. (2015): Bienen und ihre Bedeutung für die Bestäubungsleistung von Nutzpflanzen. In: Lorenz, S., Stark, K. (eds.) Menschen und Bienen. Ein nachhaltiges Miteinander in Gefahr. Oekom-Verlag, München, pp. 27–36.
• Motzke, I., Tscharntke, T., Wanger, T.C. & Klein, A.M. (2015): Pollination mitigates cucumber yield gaps more than pesticide and fertilizer use in tropical smallholder gardens. Journal of Applied Ecology 52: 261–269. https://doi.org/10.1111/1365-2664.12357
• Hülsmann, M., von Wehrden, H., Klein, A.M. & Leonhardt, S.D. (2015):  Plant diversity and composition compensate for negative effects of urbanization on foraging bumble bees. Apidologie 46: 760–770. https://doi.org/10.1007/s13592-015-0366-x
• Groeneveld, J. & Klein, A.M. (2015): Pennycress-corn double-cropping increases ground beetle diversity. Biomass and Bioenergy 77: 16–25. https://doi.org/10.1016/j.biombioe.2015.03.018
• Staab, M., Ohl, M., Zhu, C.D. & Klein, A.M. (2015): Observational natural history and morphological taxonomy are indispensable for future challenges in biodiversity and conservation. Communicative and Integrative Biology 8: e992745. https://doi.org/10.4161/19420889.2014.992745
• Schäckermann, J., Mandelik, Y., Weiss, N., von Wehrden, N., & Klein, A.M. (2015): Natural habitat does not mediate vertebrate seed predation as an ecosystem dis-service to agriculture. Journal of Applied Ecology 52: 291–299. https://doi.org/10.1111/1365-2664.12402
• Klein, A.M. (2015): Contribution of pollinator-mediated crops to nutrients in the human food supply. In: Potts, S., Biesmeijer, K., Bommarco, R., Breeze, T., Carvalheiro, L., Franzén, M., González-Varo, J.P., Holzschuh, A., Kleijn, D., Kunin, B., Lecocq, T., Lundin, O., Michez, D., Neumann, P., Nieto, A., Penev, L., Rasmont, P., Ratamäki, O., Riedinger, V., Roberts, S.P.M., Rundlöf, M., Scheper, J., Sørensen, P., Steffan-Dewenter, I., Stoev, P., Vilà, M. & Schweiger O., (2015): Status and trends of European pollinators. Key findings of the STEP project. Pensoft Publishers, Sofia, pp. 41–42.
• Perović, D., Gámez-Virués, S., Börschig, C., Klein, A.M., Krauss, J., Steckel, J., Rothenwöhrer, C., Erasmi, S., Tscharntke, T. & Westphal, C. (2015): Configurational landscape heterogeneity shapes functional community composition of grassland butterflies. Journal of Applied Ecology 52: 505–513. https://doi.org/10.1111/1365-2664.12394
• Manning, P., Gossner, M., Bossdorf, O., Allan, E., Prati, D., Blüthgen, N., Boch, S., Böhm, S.,  Börschig, C., Hölzel, N., Jung, K., Klaus, V., Klein, A.M., Kleinebecker, T., Krauss, J., Lange, M., Müller, J., Pašalić, E., Socher, S., Tschapka, M., Türke, M., Weiner, C., Werner, M., Gockel, S., Hemp, A., Renner, S., Wells, K., Buscot, F., Kalko, E., Linsenmair, K., Weisser, W.W. & Fischer, M. (2015): Grassland management intensification weakens the associations among the diversities of multiple plant and animal taxa. Ecology 6: 1492–1501. https://doi.org/10.1890/14-1307.1
• Groeneveld, J., Lührs, H. & Klein, A.M. (2015): Pennycress double-cropping does not negatively impact spider diversity. Agriculture and Forest Entomology 17: 247–257. https://doi.org/10.1111/afe.12100
• Klein, A.M. (2015): “Please pollinate!” Helpful insects: essential to fruit yield and quality. german research – Magazine of the Deutsche Forschungsgemeinschaft 2: 28–31. https://www.dfg.de/resource/blob/285938/8e0464ec2eff68b7f14edd2370edc8a6/german-research-2015-2-en-data.pdf
• Klein, A.M. (2014): “Bitte bestäuben!” Blütenbesuchende Insekten: Unverzichtbar für Ertrag und Qualität von Früchten. forschung – Das Magazin der Deutschen Forschungsgemeinschaft 3: 10–13. https://www.dfg.de/resource/blob/285872/fa7ace91a2d6874db6b1f7f96200af54/forschung-2014-03-data.pdf
• Börschig, C., Klein, A.M. & Krauss, J. (2014): Effects of grassland management, endophytic fungi and predators on aphid abundance in two distinct regions. Journal of Plant Ecology 7: 490–498. https://doi.org/10.1093/jpe/rtt047
• Tallis, H., …, Klein, A.M., …, Pufal, G., … & Wood, S.A. (2014): Working together: A call for inclusive conservation. Nature 515: 27–28. https://doi.org/10.1038/515027a
• Staab, M., Schuldt, A., Assmann, T., Bruelheide, H. & Klein, A.M. (2014): Ant community structure during forest succession in a subtropical forest in South-East China. Acta Oecologica 61: 32–40. https://doi.org/10.1016/j.actao.2014.10.003
• Assmann, T., Drees, C., Härdtle, W., Klein, A.M., Schuldt, A. & von Oheimb, G. (2014): Ökosystem und Biodiversität. In: Heinrichs, H., Michelsen, G. (eds.) Nachhaltigkeitswissenschaften. Springer Spektrum, Berlin & Heidelberg, Germany, pp. 147–175. https://link.springer.com/book/10.1007/978-3-642-25112-2
• Klein, A.M., Boreux, V., Bauhus, J., Chappell, M.J., Fischer, J. & Philpott, S.M. (2014): Forest islands in an agricultural sea. In: Kettle, C.J. & Koh, L.P. (eds.) Global Forest Fragmentation. CABI, Delémont, Schweiz, pp. 79–95. https://doi.org/10.1079/9781780642031.0079
• Hudewenz, A., Pufal, G., Bögeholz, A.L. & Klein, A.M. (2014): Cross-pollination benefits differ among oilseed rape varieties. Journal of Agricultural Sciences 152: 770–778. https://doi.org/10.1017/S0021859613000440
• Chaplin-Kramer, R., Dombeck, E., Gerber, J., Knuth, K.A., Mueller, N.D., Mueller, M., Ziva, G. & Klein, A.M. (2014). Global malnutrition overlaps with pollinator-dependent micronutrient production. Proceedings of the Royal Society B: Biological Sciences 281: 20141799. https://doi.org/10.1098/rspb.2014.1799
• Pereira-Peixoto, H.M., Pufal, G., Martins, C.F. & Klein, A.M. (2014): Spillover of trap-nesting bees and wasps in an urban-rural interface. Journal of Insect Conservation 18: 815–826. https://doi.org/10.1007/s10841-014-9688-7
• Garibaldi, L.A., Carvalheiro, L.G., Leonhardt, S.D., Aizen, M.A., Blaauw, B.R., Isaacs, R., Kuhlmann, M., Kleijn, D., Klein, A.M., Kremen, C., Morandin, L., Scheper, J. & Winfree, R. (2014): From research to action: practices to enhance crop yield through wild pollinators. Frontiers in Ecology and the Environment 12: 439–447. https://doi.org/10.1890/130330
• Wanger, T.C., Tscharntke, T., Schroth, G. & Klein, A.M. (2014): Cocoa shortfall: Pollination curbs climate risk to cocoa.  Nature 511: 155. https://doi.org/10.1038/511155b
• Schäckermann, J., Weiss, N., von Wehrden, H. & Klein, A.M. (2014): High trees increase sunflower seed predation by birds in an agricultural landscape of Israel. Frontiers in Ecology and Evolution 2: 35. https://doi.org/10.3389/fevo.2014.00035
• Staab, M., Ohl, M., Zhu, C.D. & Klein, A.M. (2014): A unique nest-protection strategy in a new species of spider wasp. PLOS One 9: e101592. https://doi.org/10.1371/journal.pone.0101592 (highlighted in Nature 10.07.2014)
• Staab, M., Schuldt, A., Assmann, T. & Klein, A.M. (2014): Tree diversity promotes predator but not omnivore ants in a subtropical Chinese forest. Ecological Entomology 39: 637–647. https://doi.org/10.1111/een.12143
• Abbas, M., Klein, A.M., Ebeling, A., Oelmann, Y., Ptacnik, R., Weisser, WW. & Hillebrand, H. (2014): Plant diversity effects on pollinating and herbivorous insects can be linked to plant stoichiometry. Basic and Applied Ecology 15: 169–178. https://doi.org/10.1016/j.baae.2014.02.001
• Abson, D.J., von Wehrden, H., Baumgärtner, S., Fischer, J., Hanspach, J., Härdtle, W., Heinrichs, H., Klein, A.M., Lang, D.J., Martens, P. & Walmsley, D. (2014): Ecosystem services as a boundary object for sustainability. Ecological Economics 103: 29–37. https://doi.org/10.1016/j.ecolecon.2014.04.012
• Allan, E., Bossdorf, O., Dormann, C.F., Prati, D., Gossner, M.M., Tscharntke, T., Blüthgen, N., Barto, K., Bellach, M., Birkhofer, K., Boch, S., Böhm, S., Börschig, C., Chatzinotas, A., Christ, S., Daniel, R., Diekoetter, T., Fischer, C., Friedl, T., Glaser, K., Hallman, C., Hodaĉ, L., Hölzel, N., Jung, K., Klein, A.M., Klaus, V., Kleinebecker, T., Krauss, J., Lange, M., Müller, J., Nacke, H., Pašalić, E., Rillig, M., Rothenwöhrer, C., Schall, P., Scherber, C., Schulze, W., Socher, S., Steckel, J., Steffan-Dewenter, I., Türke, M., Weiner, C., Werner, M., Westphal, C., Wolters, V., Wubet, T., Gockel, S., Gorke, M., Hemp, A., Renner, S.C., Schöning, I., Pfeiffer, S., König-Ries, B., Buscot, F., Linsenmair, K.E., Schulze, E.D., Weisser, W.W. & Fischer, M. (2014): Interannual variation in land-use intensity enhances grassland multidiversity. Proceedings of the National Academy of Sciences 111: 308–313. https://doi.org/10.1073/pnas.1312213111
• Brittain, C., Kremen, C., Garbers, A. & Klein, A.M. (2014): Pollination and plant resources change the nutritional quality of almonds for human health. PLOS One 9: e90082. https://doi.org/10.1371/journal.pone.0090082
• Bruelheide, H., Nadrowski, K., Assmann, T., Bauhus, J., Both, S., Buscot, F., Chen, X.Y., Ding, B., Durka, W., Erfmeier, A., Gutknecht, J.L.M., Guo, D., Guo, L.D., Härdtle, W., He, J. S., Klein, A.M., Kühn, P., Liang, Y., Liu, X., Michalski, S., Niklaus, P.A., Pei, K., Scherer-Lorenzen, M., Scholten, T., Schuldt, A., Seidler, G., Trogisch, S., von Oheimb, G., Welk, E., Wirth, C., Wubet, T., Yang, X., Yu, M., Zhang, S., Zhou, H., Fischer, M., Ma, K. & Schmid, B. (2014): Designing forest biodiversity experiments: general considerations illustrated by a new large experiment in subtropical China. Methods in Ecology and Evolution 5: 74–89. https://doi.org/10.1111/2041-210X.12126
• Groeneveld, J.H. & Klein, A.M. (2014): Pollination of two oil-producing plant species: Camelina (Camelina sativa L. Crantz) and pennycress (Thlaspi arvense L.) double cropping in Germany. Global Change Biology Bioenergy 6: 242–251. https://doi.org/10.1111/gcbb.12122
• Klein, A.M., Hendrix, S.D., Clough, Y., Scofield, A. & Kremen, C. (2014): Interacting effects of pollination, water and nutrients on fruit tree performance. Plant Biology 17: 201–208. https://doi.org/10.1111/plb.12180
• Pisanty, G., Klein, A.M. & Mandelik, Y. (2014): Do wild bees complement honey bee pollination of confection sunflowers in Israel? Apidologie 45: 235–247. https://doi.org/10.1007/s13592-013-0242-5
• Wanger, T.C., Darras, K., Bumrungsri, S., Tscharntke, T. & Klein, A.M. (2014): Bat pest control contributes to food security in Thailand. Biological Conservation 171: 220–223. https://doi.org/10.1016/j.biocon.2014.01.030
• Allan, E., Weisser, W.W., Fischer, M., Schulze, E.D., Weigelt, A., Roscher, C., Baade, J., Barnard, R.L., Bessler, H., Buchmann, N., Buscot, F., Ebeling, A., Eisenhauer, N., Engels, C., Fergus, A.J.F., Gleixner, G., Gubsch, M., Habekost, M., Halle, S., Klein, A.M., König, S., Kowalski, E., Kreutziger, Y., Kertscher, I., Kummer, V., Kuu, A., Lange, M., Lauterbach, D., le Roux, X., Marquard, E., Migunova, V.D., Milcu, A., Müller, R., Mwangi, P., Niklaus, P.A., Oelmann, Y., Petermann, J.S., Poly, F., Rottstock, T., Rosenkranz, S., Sabais, A., Scherber, C., Scherer-Lorenzen, M. Scheu, S., Schmitz, M., Schumacher, J., Soussana, J.F., Steinbeiss, S., Schwichtenberg, G., Temperton, V., Tscharntke, T., Voigt, W., Wilcke, W., Wirth, C. & Schmid, B. (2013): A comparison of the strength of biodiversity effects across multiple functions. Oecologia 173: 223–237. https://doi.org/10.1007/s00442-012-2589-0
• Börschig, C., Klein, A.M., von Wehrden, H. & Krauss, J. (2013): Traits of butterfly communities change from specialist to generalist characteristics with increasing land-use intensity. Basic and Applied Ecology 14: 547–554. https://doi.org/10.1016/j.baae.2013.09.002
• Brittain, C., Kremen, C., Hendrix, S.D., Thorp, R., Williams, N. & Klein, A.M. (2013): Almond orchards with wild insects have higher fruit set. Sacramento Valley Regional Almond Newsletter, p. 4.
• Brittain, C., Williams, N., Kremen, C. & Klein, A.M. (2013): Synergistic effects of non-Apis bees and honey bees for pollination services. Proceedings of the Royal Society B 280: 20122767. https://doi.org/10.1098/rspb.2012.2767
• Fischer, J., Brittain, C. & Klein, A.M. (2013): Biodiversity-friendly farming. In: Levin, S.A. (ed.): Encyclopedia of Biodiversity, 2nd Edition, Elsevier, New York, pp. 418–429. https://doi.org/10.1016/B978-0-12-384719-5.00331-2
• Garibaldi, L.A., Steffan-Dewenter, I., Winfree, R., Aizen, M.A., Bommarco, R., Cunningham, S.A., Kremen, C., Carvalheiro, L.G., Harder, L.D., Afik, O., Bartomeus, I., Benjamin, F., Boreux, V., Cariveau, D., Chacoff, N.P., Dudenhöffer, J.H., Freitas, B.M., Ghazoul, J., Greenleaf, S., Hipólito, J., Holzschuh, A., Howlett, B., Isaacs, R., Javorek, S.K., Kennedy, C.M., Krewenka, K., Krishnan, S., Mandelik, Y., Mayfield, M.M, Motzke, I., Munyuli, T., Nault, B.A., Otieno, M., Petersen, J., Pisanty, G., Potts, S.G., Rader, R., Ricketts, T.H., Rundlöf, M., Seymour, C.L., Schuepp, C., Szentgyörgyi, H., Taki, H., Tscharntke, T., Vergara, C.H., Viana, B.F., Wanger, T.C., Westphal, C., Williams, N. & Klein, A.M. (2013): Wild pollinators enhance fruit set of crops regardless of honey bee abundance. Science 339: 1608–1611. https://doi.org/10.1126/science.1230200
• Hudewenz, A. & Klein, A.M. (2013): Competition between honey bees and wild bees and the role of nesting resources in a nature reserve. Journal of Insect Conservation 17: 1275–1283. https://doi.org/10.1007/s10841-013-9609-1
• Kennedy, C.M., Lonsdorf, E., Neel, M.C., Williams, N.M., Ricketts, T.H., Winfree, R., Bommarco, R., Brittain, C., Burley, A.L., Cariveau, D., Carvalheiro, L.G., Chacoff, N.P., Cunningham, S.A., Danforth, B.N., Dudenhöffer, J.H., Elle, E., Gaines, H.R., Gratton, C., Greenleaf, S.S., Holzschuh, A., Isaacs, R., Javorek, S.K., Jha, S., Klein, A.M., Krewenka, K., Mandelik, Y., Mayfield, M.M., Morandin, L., Neame, L.A., Otieno, M., Park, M., Potts, S.G., Rundlöf, M., Saez, A., Steffan-Dewenter, I., Taki, H., Tuell, J.K., Viana, B.F., Veldtman, R., Westphal, C. & Kremen, C. (2013): A global quantitative synthesis of local and landscape effects on native bee pollinators in agroecosystems. Ecology Letters 15: 584–599. https://doi.org/10.1111/ele.12082
• Klein, A.M. (2013): Teamarbeit: Honigbienen können nur gemeinsam mit wildlebenden Insekten die Bestäubung von Kulturpflanzen sichern. Deutsches Bienenjournal 5: 12–14.
• Larson, B.M.H., Kueffer, C. and the ZIF Working Group (Brock, A., Edwards, P., Gross, M., Hall, M., Higgs, E., Jentsch, A., Jeschke, J.M., Klein, A.M. & Wynne, B.) (2013): Managing invasive species amidst high uncertainty and novelty. Trends in Ecology and Evolution 28: 255–256. https://doi.org/10.1016/j.tree.2013.01.013
• Leonhardt, S.D., Gallai, N., Garibaldi, L.A., Kuhlmann, M. & Klein, A.M. (2013): Economic gain, stability of pollination and bee diversity decrease from southern to northern Europe. Basic and Applied Ecology 14: 461–471. https://doi.org/10.1016/j.baae.2013.06.003
• Motzke, I., Tscharntke, T., Navjot, S., Klein, A.M. & Wanger, T. (2013): Ant seed predation, pesticide applications and farmers’ income from tropical multi-cropping gardens. Agricultural and Forest Entomology 15: 245–254. https://doi.org/10.1111/afe.12011
• Pufal, G. & Klein, A.-M. (2013): Post-dispersal seed predation of three grassland species in a plant diversity experiment. Journal of Plant Ecology 6: 468–479. https://doi.org/10.1093/jpe/rtt011
• Blitzer, E.J., Dormann, C.F., Holzschuh, A., Klein, A.M., Rand, T.A. & Tscharntke, T. (2012): Spillover of functionally important organisms between managed and natural habitats. Agriculture, Ecosystems and Environment 146: 34–43. https://doi.org/10.1016/j.agee.2011.09.005
• Brittain, C., Kremen, C. & Klein, A.M. (2012): Biodiversity buffers pollination from changes in environmental conditions. Global Change Biology 19: 540–547. https://doi.org/10.1111/gcb.12043
• Ebeling, A., Klein, A.M., Weisser, W.W. & Tscharntke, T. (2012): Multitrophic effects of experimental changes in plant diversity on cavity-nesting bees, wasps, and their parasitoids. Oecologia 169: 453–465. https://doi.org/10.1007/s00442-011-2205-8
• Hudewenz, A., Klein, A.M., Scherber, C., Stanke, L., Tscharntke, T., Vogel, A., Weigelt, A., Weisser, W.W. & Ebeling, A. (2012): Herbivore and pollinator responses to grassland management intensity along experimental changes in plant species richness. Biological Conservation 150: 42–52.
• Klein, A.M., Brittain, C., Hendrix, S.D., Thorp, R., Williams, N. & Kremen, C. (2012): Wild pollination services to California almond rely on semi-natural habitat. Journal of Applied Ecology 49: 723–732. https://doi.org/10.1111/j.1365-2664.2012.02144.x
• Lüdeke-Freund, F., Walmsley, D., Plath, M., Wreesmann, J. & Klein, A.M. (2012): Sustainable plant oil production for aviation fuels – Assessment challenges and consequences for new feedstock concepts. Sustainability Accounting, Management and Policy Journal 3: 186–217. https://doi.org/10.1108/20408021211282313
• Schleuning, M., Fründ, J., Klein, A.M., Abrahamczyk, S., Alarcón, R., Albrecht, M., Andersson, G.K.S., Bazarian, S., Böhning-Gaese, K., Bommarco, R., Dalsgaard, B., Dehling, D.M., Gotlieb, A., Hagen, M., Hickler, T., Holzschuh, A., Kaiser-Bunbury, C.N., Kreft, H., Morris, R.J., Sandel, B., Sutherland, W.J., Svenning, J.C., Tscharntke, T., Watts, S., Weiner, C.N., Werner, M., Williams, N.M. Winqvist, C., Dormann, C.F. & Blüthgen, N. (2012). Specialization of mutualistic interaction networks decreases towards tropical latitudes. Current Biology 22: 1925–1931. https://doi.org/10.1016/j.cub.2012.08.015
• Smukler, S., Philpott, S., Jackson, L., Klein, A.M, DeClerck, F., Winowiecki, L. & Palm, C. (2012): Ecosystem services in agricultural landscapes. In: Clerck, F.A.J., Ingram, J.C., Rio, C.R. (eds.): Integrating Ecology into poverty reduction. Springer Verlag, Berlin, Germany, pp. 17–51. https://doi.org/10.1007/978-1-4419-0633-5_3
• Tscharntke, T., Tylianakis, J.M., Rand, T.A., Didham, R.K., Fahrig, L., Batáry, P., Bengtsson, J., Clough, Y., Crist, T.O., Dormann, C.F., Ewers, R.M., Fründ, J., Holt, R.D., Holzschuh, A., Klein, A.M., Kleijn, D., Kremen, C., Landis, D.A., Laurance, W., Lindenmayer, D., Scherber, C., Sodhi, N., Steffan-Dewenter, I., Thies, C., van der Putten, W.H. & Westphal, C. (2012): Landscape moderation of biodiversity patterns and processes – eight hypotheses. Biological Reviews 87: 661–685. https://doi.org/10.1111/j.1469-185X.2011.00216.x
• Vanbergen, A.J., Ambrose, N., Aston, D., Biesmeijer, C.J., Bourke, Breeze, A.T., Brotherton, P., Brown, M., Chandler, D., Clook, M., Connolly, C.N., Costigan, P., Coulson, M., Cresswell, J., Dean, R. Dicks, L., Felicioli, A., Fojt, O., Gallai, N., Genersch, E., Godfray, C., Grieg-Gran, M. Halstead, A., Harding, D., Harris, B., Hartfield, C., Heard, M.S., Herren, B., Howarth, J., Ings, T., Kleijn, D., Klein, A.M., Kunin, W.E., Lewis, G., MacEwen, A., Maus, C., McIntosh, L., Millar, N.S., Neumann, P., Ollerton, J., Olschewski, R., Osborne, J.L., Paxton, R.J., Pettis, J., Phillipson, B., Potts, S.G., Pywell, R., Rasmont, P., Roberts, S., Salles, J.M., Schweiger, O., Sima, P., Thompson, H., Titera, D., Vaissiere, B., Van der Sluijs, J., Webster, S., Wentworth, J. & Wright, G.A. (2012): Insect pollinators: linking research and policy. Church House Conference Centre, Dean’s Yard, Westminster, London, Workshop Report, pp. 35.
• Blüthgen, N. & Klein, A.M. (2011): Functional complementarity and specialisation: the role of biodiversity in plant-pollinator interactions. Basic and Applied Ecology 12: 282–291. https://doi.org/10.1016/j.baae.2010.11.001
• Ebeling, A., Klein, A.M. & Tscharntke, T. (2011): Plant-flower visitor interaction webs: Temporal stability and pollinator specialization increases along an experimental plant diversity gradient. Basic and Applied Ecology 12: 300–309. https://doi.org/10.1016/j.baae.2011.04.005
• Eilers, E.J., Kremen, C., Smith Greenleaf, S., Garber, A.K. & Klein, A.M. (2011): Contribution of pollinator-mediated crops to nutrients in the human food supply. PLOS One 6: e21363. https://doi.org/10.1371/journal.pone.0021363
• Fischer, J., Batáry, P., Bawa, K.S., Brussaard, L., Chappell, M.J., Clough, Y., Daily, G.C., Dorrough, J., Hartel, T., Jackson, L.E., Klein, A.M., Kremen, C., Kuemmerle, T., Lindenmayer, D.B., Mooney, H.A., Perfecto, I., Philpott, S.M., Tscharntke, T., Vandermeer, J., Wanger, T.C. & von Wehrden, H. (2011): Conservation: Limits of land sparing. Science 334: 393–395.
• Garibaldi, L.A., Aizen, M.A., Klein, A.M., Cunningham, S.A. & Harder, L.D. (2011): Global growth and stability of agricultural yield decrease with pollinator dependence. Proceedings of the National Academy of Sciences 108: 5909–5914. https://doi.org/10.1073/pnas.1012431108
• Garibaldi, L.A., Steffan-Dewenter, I., Kremen, C., Morales, J.M., Bommarco, R., Cunningham, S.A., Carvalheiro, L.G., Chacoff, N.P., Dudenhöffer, J.H., Greenleaf, S.S., Holzschuh, A., Isaacs, R., Krewenka, C., Mandelik, Y., Mayfield, M.M., Morandin, L.A., Potts, S.G., Ricketts, T.H., Szentgyörgyi, H., Viana, B.F., Westphal, C., Winfree, R. & Klein, A.M. (2011): Stability of pollination services decreases with isolation from natural areas despite honey bee visits. Ecology Letters 14: 1062–1072. https://doi.org/10.1111/j.1461-0248.2011.01669.x
• Garibaldi, L.A., Muchhala, N., Motzke, I., Bravo-Monroy, L, Olschewski, R. & Klein, A.M. (2011): Services from plant-pollinator interactions in the Neotropics. In: Rapidel, B., De Clerck, F., LeCoq, J.F., Beer, J. (eds): Ecosystem services from agriculture and agroforestry – Measurement and payment. Earthscan publishing. https://doi.org/10.4324/9781849775656
• Klein, A.M. (2011): Plant-pollinator interactions in changing environments. Basic and Applied Ecology 12: 279–281. https://doi.org/10.1016/j.baae.2011.04.006
• Olschewski, R. & Klein, A.M. (2011): Ecosystem services between sustainability and efficiency. Sustainability: Science, Practice, & Policy 7: 69–73. https://doi.org/10.1080/15487733.2011.11908066
• Potts, S.G., Biesmeijer, J.C., Bommarco, R., Felicioli, A., Fischer, M., Jokinen, P., Kleijn, D., Klein, A.M., Kunin, W.E., Neumann, P., Penev, L.D., Petanidou, T., Rasmont, P., Roberts, S.P.M., Smith, H.G., Sørensen, P.B., Steffan-Dewenter, I., Vaissière, B.E., Vilà, M., Vujić, A., Woyciechowski, M., Zobel, M., Settele, J. & Schweiger, O. (2011): Developing European conservation and mitigation tools for pollination services: approaches of the STEP (Status and Trends of European Pollinators) project. Journal of Apicultural Research 50: 152–164. https://doi.org/10.3896/IBRA.1.50.2.07
• Teodoro, A.V., Munoz A., Tscharntke,T., Klein, A.M. & Tylianakis, J.M. (2011): Early succession arthropod community changes on experimental passion fruit plant patches along a land-use gradient in Ecuador during the dry season. Agriculture, Ecosystems and Environment 140: 14–19. https://doi.org/10.1016/j.agee.2010.11.006
• Clough, Y., Abrahamczyk, S., Adams, M.O., Anshary, A., Ariyanti, N., Betz, L., Buchori, D., Cicuzza, D., Darras, K., Dwi Putra, D., Fiala, B., Gradstein, S.R., Kessler, M., Klein, A.M., Pitopang, R., Sahari, B., Scherber, C., Schulze, C.H., Shahabuddin, Sporn, S., Stenchly, K., Tjitrosoedirdjo, S.S., Wanger, T.C., Weist, M., Wielgoss, A. & Tscharntke, T. (2010): Biodiversity patterns and trophic interactions in human-dominated tropical landscapes in Sulawesi (Indonesia): plants, arthropods and vertebrates. In: Tscharntke, T., Leuschner, C., Veldkamp, E., Faust, H., Guhardja, E. & Bidin, A. (eds.): Tropical rainforests and agroforests under global change. Environmental Science and Engineering Series. Springer Verlag, Berlin, Germany, pp. 15–71. https://doi.org/10.1007/978-3-642-00493-3_2
• Olschewski, R., Klein, A.M. & Tscharntke, T. (2010): Economic trade-offs between carbon sequestration, timber production, and crop pollination in tropical forested landscapes. Ecological Complexity 7: 314–319. https://doi.org/10.1016/j.ecocom.2010.01.002
• Scherber, C., Eisenhauer, N., Weisser, W.W., Schmid, B., Voigt, W., Schulze, E.D., Roscher, C., Weigelt, Al, Allan, E., Beßler, H., Bonkowski, M., buchmann, N., Buscot, F., Clement, L.W., Ebeling, A., Engels, C., Fischer, M.S., Halle, S., Kertscher, I., Klein, A.M., Koller, R., König, S., Kowalski, E., Kummer, V., Kuu, A., Lange, M., Lauterbach, D., Middelhoff, C., Migunova, V.D., Milcu, A., Müller, R., Partsch, S., Petermann, J.S., Renker, C., Rottstock, T., Sabais, A., Scheu, S., Schuchmacher, J., Temperton, V.M. & Tscharntke, T. (2010): Bottom-up effects of plant diversity on biotic interactions in a biodiversity experiment. Nature 468: 553–556. https://doi.org/10.1038/nature09492
• Teodoro, A.V., Sousa-Souto, L., Klein, A.M. & Tscharntke, T. (2010): Seasonal contrasts in the response of coffee ants to agroforestry shade-tree management. Environmental Entomology 39: 1744–1750. https://doi.org/10.1603/EN10092
• Tscharntke, T., Dormann, C., Holzschuh, A., Klein, A.M. & Thies, C. (2010): Bedeutung und Management der Bestäubung in Kulturlandschaften. In: Hotes, S. and Wolters, V. (eds.): Fokus Biodiversität – Wie Biodiversität in der Kulturlandschaft erhalten und nachhaltig genutzt werden kann. Oekom Verlag, München, Germany.
• Veddeler, D., Tylianakis, J., Tscharntke, T. & Klein, A.M. (2010): Natural enemy diversity reduces temporal variability in wasp but not bee parasitism. Oecologia 162: 755–762. https://doi.org/10.1007/s00442-009-1491-x
• Aizen, M.A., Garibaldi, L.A., Cunningham, S.A. & Klein, A.M. (2009): How much does agriculture depend on pollinators? Lessons from long-term trends in crop production. Annals of Botany 103: 1579–1588. https://doi.org/10.1093/aob/mcp076
• Eilers, E.J. & Klein, A.M. (2009): Landscape context and management effects on an important insect pest and its natural enemies in almond. Biological Control 51: 388–394. https://doi.org/10.1016/j.biocontrol.2009.07.010
• Garibaldi, L.A., Aizen, A.A., Cunningham, S.A. & Klein, A.M. (2009): Pollination shortage and global crop production: looking at the whole spectrum of pollinator dependency. Communicative and Integrative Biology 2: 37–39. https://doi.org/10.4161/cib.2.1.7425
• Griffin, J.N., O’Gorman, E.J., Emmerson, M.C., Jenkins, S.R., Klein, A.M., Loreau & M., Symstad, A. (2009): Biodiversity and the stability of ecosystem functioning. In: Naeem S., Bunker, D.E., Hector, A., Loreau, M., Perrings, C. (eds.): Biodiversity, ecosystem functioning, and human wellbeing – an ecological and economic perspective. Oxford University Press, pp. 78–93.
• Klein, A.M. (2009): Nearby rainforest promotes coffee pollination by increasing spatio-temporal stability in bee species richness. Forest Ecology and Management 258: 1838–1845. https://doi.org/10.1016/j.foreco.2009.05.005
• Klein, A.M., Müller, C., Hoehn, P. & Kremen, C. (2009): Understanding the role of species richness for crop pollination services. In: Naeem, S., Bunker, D.E., Hector, A., Loreau, M., Perrings, C. (eds.): Biodiversity, ecosystem functioning, and human wellbeing – an ecological and economic perspective. Oxford University Press, pp. 195–208.
• Teodoro, A.V., Klein, A.M. & Tscharntke T. (2009): Temporally mediated responses of the diversity of coffee mites to agroforestry management. Journal of Applied Entomology 133: 659–665. https://doi.org/10.1111/j.1439-0418.2009.01422.x
• Teodoro, A.V., Tscharntke, T. & Klein, A.M. (2009): From the lab to the field: contrasting effects of multitrophic interactions and agroforestry management on coffee pest densities. Entomologia Experimentalis et Applicata 131: 121–129. https://doi.org/10.1111/j.1570-7458.2009.00840.x
• Aizen, M.A., Garibaldi, L.A., Cunningham, S.A. & Klein, A.M. (2008): Long-term global trends in crop yield and production reveal no current pollination shortage but increasing pollinator dependency. Current Biology 18: 1572–1575. https://doi.org/10.1016/j.cub.2008.08.066
• Ebeling, A., Klein, A.M., Schumacher, J., Weisser, W. & Tscharntke, T. (2008): How does plant richness affect structure and stability of pollinator communities? Oikos 117: 1808–1815. https://doi.org/10.1111/j.1600-0706.2008.16819.x
• Klein, A.M., Cunningham, S.A., Bos, M. & Steffan-Dewenter, I. (2008): Advances in pollination ecology from tropical plantation crops. Ecology 89: 935–943. https://doi.org/10.1890/07-0088.1
• Klein, A.M., Olschewski, R. & Kremen, C. (2008): The ecosystem service controversy: is there sufficient evidence for a ‘pollination paradox’? GAIA 17: 12–16. https://doi.org/10.14512/gaia.17.1.7
• Kremen, C., Daily, G.C., Klein, A.M. & Scofield, D. (2008): Inadequate assesment of the ecosystem service rationale for conservation: A reply to Ghazoul. Conservation Biology 22: 795–798. https://doi.org/10.1111/j.1523-1739.2008.00940.x
• Lozada, T., de Koning, G.H.J, Kesseler, M., Klein, A.M. & Tscharntke, T. (2008): Geographical range size of tropical plants influence their response to anthropogenic activities. Diversity and Distributions 14: 59–68. https://doi.org/10.1111/j.1472-4642.2007.00413.x
• Ricketts, T.H., Regetz, J., Steffan-Dewenter, I., Cunningham, S.A., Kremen, C., Bogdanski, A., Gemmill-Herren, B., Greenleaf, S.S., Klein, A.M., Mayfield, M.M., Morandin, L.A., Ochieng, A. & Viana, B.F. (2008): Landscape effects on crop pollination services: are there general patterns? Ecology Letters 11: 499–515. https://doi.org/10.1111/j.1461-0248.2008.01157.x
• Teodoro, A., Klein, A.M. & Tscharntke, T. (2008): Environmentally mediated coffee pest densities in relation to agroforestry management, using hierarchical partitioning analyses. Agriculture, Ecosystems and Environment 125: 120–126. https://doi.org/10.1016/j.agee.2007.12.004
• Tylianakis, J.M, Rand, T.M., Kahmen, A., Klein, A.M., Buchmann, N., Perner, J. & Tscharntke, T. (2008): Resource heterogeneity moderates the biodiversity-function relationship in real world ecosystems. PLOS Biology 6: 947–956. https://doi.org/10.1371/journal.pbio.0060122
• Veddeler, D., Olschewski, R., Tscharntke, T. & Klein, A.M. (2008): The contribution of non-managed social bees to coffee production: new economic insights based on farm-scale yield data. Agroforestry Systems 73: 109–114. https://doi.org/10.1007/s10457-008-9120-y
• Bos, M.M., Veddeler, D., Bogdansi, A., Klein, A.M., Tscharntke, T., Steffan-Dewenter, I. & Tylianakis, J. M. (2007): Caveates to quantifying ecosystem services. Fruit abortion blurs benefits from crop pollination. Ecological Applications 17: 1841–1849. https://doi.org/10.1890/06-1763.1
• Klein, A.M., Vaissière, B.E., Cane, J., Steffan-Dewenter, I., Cunningham, S.A., Kremen, C. & Tscharntke, T. (2007): Importance of pollinators in changing landscapes for world crops. Proceedings of the Royal Society B 274: 303–313. https://doi.org/10.1098/rspb.2006.3721
• Kremen, C., Williams, N.M., Aizen, M.A., Gemmill-Herren, B., Le Buhn, G., Minckley, R., Packer, L., Potts, S.G., Roulston, T., Steffan-Dewenter, I., Vázquez, D.P., Winfree, R., Adams, L., Crone, E.E., Greenleaf, S.S., Keitt, T.H., Klein, A.M., Regetz, J. & Ricketts, T. (2007): Pollination and other ecosystem services produced by mobile organisms: a conceptual framework for the effects of land use change. Ecology Letters 10: 299–314. https://doi.org/10.1111/j.1461-0248.2007.01018.x
• Lozada, T., de Koning, G.H.J, Kesseler, M., Klein, A.M., Tscharntke, T. (2007): Geographical range size of tropical plants influence their response to anthropogenic activities. Diversity and Distributions 14: 59–68. https://doi.org/10.1111/j.1472-4642.2007.00413.x
• Lozada, T., de Koning, G.H.J., Marché, R., Klein, A.M. & Tscharntke, T. (2007): Tree recovery and seed dispersal by birds, comparing forest, agroforestry and abandoned agroforestry in coastal Ecuador. Perspectives in Plant Ecology, Evolution and Systematics 8: 115–128. http://dx.doi.org/10.1016/j.ppees.2006.10.001
• Olschewski, R., Tscharntke, T., Benítez, P.C., Schwarze, S. & Klein, A.M. (2007): Economic evaluation of ecosystem services as a basis for stabilizing rainforest margins? The example of pollination services and pest management in coffee landscapes. In: Tscharntke, T., Leuschner, C., Zeller, M., Guhardja, E., Bidin, A. (eds.): The stability of tropical rainforest margins, linking ecological, economic and social constraints of land use and conservation. Springer Verlag, Berlin, pp. 265–278. https://doi.org/10.1007/978-3-540-30290-2_13
• Priess, J. A., Mimler, M., Klein, A.M., Schwarze, S., Tscharntke, T. & Steffan-Dewenter, I. (2007): Linking deforestation scenarios to pollination services and economic returns in coffee agroforestry systems. Ecological Applications 17: 407–417. https://doi.org/10.1890/05-1795
• Richter, A., Klein, A.M., Tscharntke, T. & Tylianakis, J. (2007): Abandonement of coffee agroforests increases insect abundance and diversity. Agroforestry Systems 69: 175–182. https://doi.org/10.1007/s10457-006-9020-y
• Klein, A.M. (2006): A drop in pollinating species might endanger the production of many useful plants – La diminution du nombre d’insectes pollinisateurs met en péril la production de nom-breuses planted de culture – Rückgang von Bestäuberarten könnte die Produktion vieler Kulturpflanzen gefährden – Peligra la producción de muchas plantas de cultivo por el retroceso de especies polinizadora. Fruit World International 4: 90–94.
• Klein, A.M. (2006): Was geht uns der Tod der Bienen an? Ist die Produktion und Vielfalt unserer Kulturpflanzen durch den Rückgang vieler Insekten gefährdet? Gastkommentar Artenvielfalt. Braunschweiger Zeitung vom 20.11.06, p. 4.
• Klein, A.M., Steffan-Dewenter, I. & Tscharntke, T. (2006): Rainforest promotes trophic interactions and diversity of trap-nesting hymenoptera in tropical agroforestry. Journal of Animal Ecology 75: 315–323. https://doi.org/10.1111/j.1365-2656.2006.01042.x
• Olschewski, R., Tscharntke, T., Benitez, P.C., Schwarze, S. & Klein, A.M. (2006): Economic evaluation of pollination services comparing coffee landscapes in Ecuador and Indonesia. Ecology & Society 11: 7. http://dx.doi.org/10.5751/ES-01629-110107
• Steffan-Dewenter, I. & Klein, A.M. (2006): Der ökologische Nutzen der Imkerei. Deutsches Bienenjournal 5: 4–5.
• Steffan-Dewenter, I., Klein, A.M., Gaebele, V., Alfert, T. & Tscharntke, T. (2006): Bee diversity and plant-pollinator interactions in fragmented landscapes. In: Waser, N. & Ollerton, J. (eds.): Plant-pollinator interactions from specialization to generalization. The University of Chicago Press, Chicago, pp. 387–407.
• Tylianakis, J. M., Klein, A.M., Lozada, T. & Tscharntke, T. (2006): Spatial scale of observation affects alpha, beta and gamma diversity of cavity-nesting bees and wasps across a tropical land-use gradient. Journal of Biogeography 33: 1295–1304. https://doi.org/10.1111/j.1365-2699.2006.01493.x
• Tylianakis, J. M., Tscharntke, T. & Klein, A.M. (2006): Diversity, ecosystem function and stability of parasitoid-host interactions across a tropical gradient of habitat modification. Ecology 87: 3047–3057. https://doi.org/10.1890/0012-9658(2006)87[3047:DEFASO]2.0.CO;2
• Veddeler, D., Klein, A.M. & Tscharntke, T. (2006): Contrasting responses of bee communities to coffee flowering at different spatial scales. Oikos 112: 594–601. https://doi.org/10.1111/j.0030-1299.2006.14111.x
• Tscharntke, T., Klein, A.M., Kruess, A. & Steffan-Dewenter, I. (2005): Landscape perspectives on agricultural intensification and biodiversity – ecosystem service management. Ecology Letters 8: 857–874. https://doi.org/10.1111/j.1461-0248.2005.00782.x
• Tylianakis, J.M., Klein, A.M. & Tscharntke, T. (2005): Spatiotemporal variation in the diversity of hymenoptera across a tropical habitat gradient. Ecology 86: 3296–3302. https://doi.org/10.1890/05-0371
• Klein, A.M., Steffan-Dewenter, I. & Tscharntke, T. (2004): Foraging trip duration and reproductive success of megachilid bees, eumenid wasps, and pompilid wasps in tropical agroforestry systems. Journal of Animal Ecology 73: 517–525. https://doi.org/10.1111/j.0021-8790.2004.00826.x
• Krauss, J., Klein, A.M., Steffan-Dewenter, I. & Tscharntke, T. (2004): Effects of habitat area, isolation, and landscape diversity on plant species richness of calcareous grasslands. Biodiversity and Conservation 13: 1427–1439. https://doi.org/10.1023/B:BIOC.0000021323.18165.58
• Tylianakis, J.M., Veddeler, D., Lozada, T., López, R.M., Benítez, P., Klein, A.M., de Koning, G.H.J., Olschewski, R., Veldkamp, E., Navarrete, H., Onore, G. & Tscharntke, T. (2004): Biodiversity of land-use systems in coastal Ecuador and bioindication using trap-nesting bees, wasps, and their natural enemies. Lyonia 6: 8–15. https://www.lyonia.org/viewarticle-237?articleID=237
• Klein, A.M., Steffan-Dewenter, I. & Tscharntke, T. (2003): Pollinator diversity and fruit set of Coffea canephora in relation to local and regional agroforestry management. Journal of Applied Ecology 40: 837–845. https://doi.org/10.1046/j.1365-2664.2003.00847.x
• Klein, A.M., Steffan-Dewenter, I. & Tscharntke, T. (2003): Fruit set of highland coffee increases with the diversity of pollinating bees. Proceedings of the Royal Society B 270: 955–961. https://doi.org/10.1098/rspb.2002.2306
• Klein, A.M., Steffan-Dewenter, I. & Tscharntke, T. (2003): Bee pollination and fruit set of Coffea arabica and C. canephora (Rubiaceae). American Journal of Botany 90: 153–157. https://doi.org/10.3732/ajb.90.1.153
• Krauss, J., Klein, A.M., Steffan-Dewenter, I. & Tscharntke, T. (2003): Effects of habitat area, isolation, and landscape diversity on plant species richness of calcareous grasslands. Biodiversity and Conservation 13: 1427–1439. https://doi.org/10.1023/B:BIOC.0000021323.18165.58
• Tscharntke, T., Klein, A.M., Kruess, A., Steffan-Dewenter, I. & Thies, C. (2003): Biodiversität und Pflanzen-Insekten-Interaktionen in Kulturlandschaften. In: Gradstein, S.R., Willmann, R., Zizka, G. (eds.): Biodiverstiätsforschung, Die Entschlüsselung der Artenvielfalt in Raum und Zeit. Kleine Senckenberg-Reihe 45. E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Germany, pp. 171–183.
• Klein, A.M. (2002): Viele Bienenarten erzeugen viel Kaffee. Deutsches Bienenjournal 10: 24–25.
• Klein, A.M., Steffan-Dewenter, I., Buchori, D. & Tscharntke, T. (2002): Effects of land-use intensity in tropical agroforestry systems on flower-visiting and trap-nesting bees and wasps. Conservation Biology 16: 1003–1014. https://doi.org/10.1046/j.1523-1739.2002.00499.x
• Klein, A.M., Steffan-Dewenter, I. & Tscharntke, T. (2002): Predator-prey ratios on cocoa in a land-use gradient in Indonesia. Biodiversity and Conservation 11: 683–693. https://doi.org/10.1023/A:1015548426672
• Tscharntke, T., Bürger, C., Eber, S., Gabriel, D., Grabe, H., Grönmeier, M., Holzschuh, A., Jahn, S., Klein, A.M., Klipfel, S., Kluth, S., Krauss, J., Kruess, A., Lehmann, K., Poveda, K., Roschewith, I., Schiele, S., Schmidt, M., Schulze, C. H., Steffan-Dewenter, I., Sundmacher, F., Thies, C., Veddeler, D. & Westphal, C. (2002): Pflanze-Insekt-Interaktionen und Biodiversität in der Agrarlandschaft. Forschungsmagazin Georgia Augusta: Vielfalt des Lebens – Biodiversität 1: 41–46.

• Penn State-Freiburg teaching award for an excellent teaching concept for the M.Sc. module “Bringing international experts in pest and pollinator management to the classroom”, 2020
• Academy award of the Protestant Academy of Baden for the talk on “Diversity as principle of life”, 2019
• Hedda Anderson visiting chair award of the University of Lund, Sweden, 2019
• Project award for applied ecological projects awarded by the Ecological Society of Germany, Austria and Switzerland for the project “Schulinsektenhaus”, 2019
• Highly-cited researcher, Web of Science, Clarivate Analytics 2016, 2017, 2018, 2019, 2020 (2015 with Reuters)
• Cultura award 2014 of the Alfred-Töpfer Foundation for important contributions to future sustainable land use in Europe, 2014
• Leuphana University of Lüneburg, award for the most-cited researcher of the University, 2013
• Leuphana University of Lüneburg, award for the best publisher, award for one of the most cited researchers and award of one of the best fundraisers of the University, 2012

To view more honors and awards, please download Alexandra Klein’s CV:

• Member of the permanent tenure commission, University of Freiburg (2025-2027)
• Member of the Heidelberg Academy of Sciences and Humanities (since 2022)
• Member of the board of trustees of the German Federal Environment Foundation, DBU (since 2022)
• Member of the expert group “invertebrate pollinators” for the Commission on Genetic Resources for Food and Agriculture for the Food and Agricultural Organization of the United Nations, FAO Rome (since 2020)
• Member of the advisory board of the BMBF research initiative “Erhalt Artenvielfalt” (FEdA) (since 2019)
• Member of the advisory council for Nature and Environmental Protection of the Ministry of the Environment, Climate Protection and Energy Sector Baden-Württemberg (since 2018)
• Member of the Foundation “Naturschutzfonds“ of the Ministry of the Environment, Climate Protection and Energy Sector Baden-Württemberg (since 2018)
• Member of the board of trustees of the Robert-Bosch College, UWC, Germany (since 2018)
• Member of the concomitant committee of the Sonderprogramm zur Stärkung der biologischen Vielfalt, Ministry of the Environment, Climate Protection and Energy Sector Baden-Württemberg (since 2018)
• Member of the permanent DFG Senate Commission on genetic research (since 2018)
• Member of the working group Nature Conservation of the Ecological Society of Germany, Austria and Switzerland (GfÖ) and Conservation organisations (since 2016)

To view more functions, offices and memberships, please download Alexandra Klein’s CV:

• Interview for hr3 Sonntagstalk with Bärbel Schäfer: “Alexandra Klein darüber, was Wildbienen von der Biene Maja lernen können”, May 2026, https://www.hr3.de/podcasts/sonntagstalk/alexandra-klein-darueber-was-wildbienen-von-der-biene-maja-lernen-koennen,podcast-episode-149862.html
• Interview for the magazine BIOTERRA: “Schlecht bestäubte Äpfel haben eine schiefe Form”, March 2026, https://www.bioterra.ch/zeitschrift/zeitschrift-bioterra-maerz-2026
• Interview for the Thüringische Landeszeitung (Gera): “Pflan­zen erken­nen dank Smart­phone”, 11.03.2026, https://www.pressreader.com/germany/thuringische-landeszeitung-gera/20260311/281986089059870
• TEDx talk “Why the future needs bees, not bots”, 04.12.2025, https://www.youtube.com/watch?v=cXgXSOGfenI
• Interview for Naturschutz und Landschaftsplanung: “EU-Ziel zum Artenschutz reicht nicht aus”, 08.10.2025, https://www.nul-online.de/aktuelles/news/article-8261516-201976/eu-ziel-zum-artenschutz-reicht-nicht-aus-.html
• Arte 42 “Können wir die Bestäuber ersetzen?”, 27.09.2024, https://www.arte.tv/de/videos/115511-006-A/koennen-wir-die-bestaeuber-ersetzen/
• ZEIT-Podcast Auch das noch?, “Insektensterben: Bio oder konventionell, das ist zu einfach gedacht”, 21.08.2024, https://www.zeit.de/wissen/2024-08/insektensterben-vielfalt-alexandra-klein-krisenpodcast
• UniCross Video “Rebellen in den Ritzen”, 15.07.2024, https://www.unicross.uni-freiburg.de/rebellen-in-den-ritzen/
• DFG bewegt “Wissenschaftsförderung der DFG: Für Biases in Begutachtungsprozessen sensibilisieren”, 08.05.2023 https://www.youtube.com/watch?v=5-LgKyoAT2U
• Axel Wagner und das Ende der Landwirtschaft, Planet Wissen, SWR, 24.03.2023
• Artensterben in Deutschland with Klein, A.M., ZDF-Dokumentation, 23.8.2022, https://www.zdf.de/dokumentation/zdfzeit/zdfzeit-artensterben-in-deutschland-100.html
• Freiburger Forschende geben Antworten auf Fragen, die sich mit Entwicklungen der Gegenwart und Zukunft beschäftigen. Episode 6: “Und es hat summ gemacht” uni’hören – Der Wissenschaftspodcast aus Freiburg, 03.05.2021, www.pr.uni-freiburg.de/pm/online-magazin/forschen-und-entdecken/unihoeren
• PoshBee field and semi-field experiments: University of Freiburg, 13.01.2021 https://www.youtube.com/watch?v=4bARJB998eU
• Insekten – auf der Suche nach Lebensräumen, Nano, 3SAT, 14.10.2020, www.3sat.de/wissen/nano/201014-sendung-nano-104.html
• Gert Scobel, “Die Illusion der Natur”” (ARD), 13.08.2020
• Der stumme Sommer. Warum sterben die Insekten? SWR Fernsehen, 08.07.2020, www.ardmediathek.de/swr/video/betrifft/der-stumme-sommer-insekten-sterben/swr-fernsehen/Y3JpZDovL3N3ci5kZS9hZXgvbzExMzgwNDA/
• Die Insektenretter, Planet Erde, ZDF, 01.03.2020, www.zdf.de/dokumentation/planet-e/planet-e-die-insektenretter-100.html

To view more media coverage and outreach activities, please download this file: