Delivery of crop pollination services is an insufficient argument for wild pollinator conservation

作者：David Kleijn, Rachael Winfree, Ígnasi Bartomeus, Luísa G. Carvalheiro, Mickaël Henry, Rufus Isaacs, Alexandra‐Maria Klein, Claire Kremen, Leithen K. M’Gonigle, Romina Rader, Taylor H. Ricketts, Neal M. Williams, Nancy Lee Adamson, John S. Ascher, Andràs Báldí, Péter Batáry, Faye Benjamin, Jacobus C. Biesmeijer, Eleanor J. Blitzer, Riccardo Bommarco, Mariette Brand, Vincent Bretagnolle, Lindsey Button, Daniel P. Cariveau, Rémy Chifflet, Jonathan F. Colville, Bryan N. Danforth, Elizabeth Elle, Michael P. D. Garratt, Félix Herzog, Andrea Holzschuh, Brad G. Howlett, Frank Jauker, Shalene Jha, Eva Knop, Kristin M. Krewenka, Violette Le Féon, Yael Mandelik, Emily A. May, Mia Park, Gideon Pisanty, Menno Reemer, Verena Riedinger, Orianne Rollin, Maj Rundlöf, Hillary Sardiñas, Jeroen Scheper, Amber R. Sciligo, Henrik G. Smith, Ingolf Steffan‐Dewenter, Robbin W. Thorp, Teja Tscharntke, Jort Verhulst, Blandina Felipe Viana, Bernard Vaissière, Ruan Veldtman, Kimiora L. Ward, Catrin Westphal, Simon G. Potts · 发表于：Nature Communications · 年份：2015 · DOI：10.1038/ncomms8414 · 被引用次数：986 · 研究领域：Plant and animal studies、Plant Parasitism and Resistance、Ecology and Vegetation Dynamics Studies

There is compelling evidence that more diverse ecosystems deliver greater benefits to people, and these ecosystem services have become a key argument for biodiversity conservation. However, it is unclear how much biodiversity is needed to deliver ecosystem services in a cost-effective way. Here we show that, while the contribution of wild bees to crop production is significant, service delivery is restricted to a limited subset of all known bee species. Across crops, years and biogeographical regions, crop-visiting wild bee communities are dominated by a small number of common species, and threatened species are rarely observed on crops. Dominant crop pollinators persist under agricultural expansion and many are easily enhanced by simple conservation measures, suggesting that cost-effective management strategies to promote crop pollination should target a different set of species than management strategies to promote threatened bees. Conserving the biological diversity of bees therefore requires more than just ecosystem-service-based arguments.