Species turnover promotes the importance of bee diversity for crop pollination at regional scales

Rachael Winfree, James R. Reilly, Ignasi Bartomeus, Daniel P. Cariveau, Neal M. Williams, Jason Gibbs

Research output: Contribution to journalArticlepeer-review

214 Scopus citations


Ecologists have shown through hundreds of experiments that ecological communities with more species produce higher levels of essential ecosystem functions such as biomass production, nutrient cycling, and pollination, but whether this finding holds in nature (that is, in large-scale and unmanipulated systems) is controversial. This knowledge gap is troubling because ecosystem services have been widely adopted as a justification for global biodiversity conservation. Here we show that, to provide crop pollination in natural systems, the number of bee species must increase by at least one order of magnitude compared with that in field experiments. This increase is driven by species turnover and its interaction with functional dominance, mechanisms that emerge only at large scales. Our results show that maintaining ecosystem services in nature requires many species, including relatively rare ones.

Original languageEnglish (US)
Pages (from-to)791-793
Number of pages3
Issue number6377
StatePublished - Feb 16 2018

Bibliographical note

Funding Information:
E. Crone, D. Kleijn, M. Genung, and T. Harrison commented on earlier versions of the manuscript. Funding: Data collection was funded by the U.S. Department of Agriculture [National Institute of Food and Agriculture (NIFA) Agriculture and Food Research Initiative grant 2009-65104-05782 to R.W. and N.M.W.]. R.W. and N.M.W. also received funding from the NSF (grant 1556629).

Publisher Copyright:
© 2018 American Association for the Advancement of Science. All Rights Reserved.


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