Wild Pollinators Enhance Fruit Set of Crops Regardless of Honey Bee Abundance


TitleWild Pollinators Enhance Fruit Set of Crops Regardless of Honey Bee Abundance
Publication TypeJournal Article
Year of Publication2013
AuthorsGaribaldi, LA, Steffan-Dewenter, I, Winfree, R, Aizen, MA, Bommarco, R, Cunningham, SA, Kremen, C, Carvalheiro, LG, Harder, LD, Afik, O, Bartomeus, I, Benjamin, F, Boreux, V, Cariveau, D, Chacoff, NP, Dudenhoffer, JH, Freitas, BM, Ghazoul, J, Greenleaf, S, Hipolito, J, Holzschuh, A, Howlett, B, Isaacs, R, Javorek, SK, Kennedy, CM, Krewenka, KM, Krishnan, S, Mandelik, Y, Mayfield, MM, Motzke, I, Munyuli, T, Nault, BA, Otieno, M, Petersen, J, Pisanty, G, Potts, SG, Rader, R, Ricketts, TH, Rundlof, M, Seymour, CL, Schuepp, C, Szentgyorgyi, H, Taki, H, Tscharntke, T, Vergara, CH, Viana, BF, Wanger, TC, Westphal, C, Williams, N, Klein, AM
JournalScience
Volume339
Issue6127
Pagination1608 - 1611
Date Published03/2013
ISSN0036-8075
Abstract

The diversity and abundance of wild insect pollinators have declined in many agricultural landscapes. Whether such declines reduce crop yields, or are mitigated by managed pollinators such as honey bees, is unclear. We found universally positive associations of fruit set with flower visitation by wild insects in 41 crop systems worldwide. In contrast, fruit set increased significantly with flower visitation by honey bees in only 14% of the systems surveyed. Overall, wild insects pollinated crops more effectively; an increase in wild insect visitation enhanced fruit set by twice as much as an equivalent increase in honey bee visitation. Visitation by wild insects and honey bees promoted fruit set independently, so pollination by managed honey bees supplemented, rather than substituted for, pollination by wild insects. Our results suggest that new practices for integrated management of both honey bees and diverse wild insect assemblages will enhance global crop yields.

URLhttp://www.sciencemag.org/content/339/6127/1608.full
DOI10.1126/science.1230200
Short TitleScience
Status: 
Published
Attributale Grant: 
RACC
Grant Year: 
Year2