Publication

Back to overview

Wild pollinators enhance fruit set of crops regardless of honey bee abundance

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Publication date 2013
Author Garibaldi LA Steffan-Dewenter I Winfree R Aizen M A Bommarco R Cunningham S A Kremen C Carval,
Project The importance of local habitat fragmentation versus landscape composition for biodiversity conservation and ecosystem services in agricultural landscapes - FRAGMENT
Show all

Original article (peer-reviewed)

Journal Science
Volume (Issue) 339
Page(s) 1608 - 1611
Title of proceedings Science
DOI 10.1126/science.1230200

Open Access

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.
-