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A heterogeneous landscape does not guarantee high crop pollination
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik. Lund University, Sweden.ORCID-id: 0000-0002-3791-4688
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och botanik.ORCID-id: 0000-0001-6362-6199
Vise andre og tillknytning
Rekke forfattare: 52016 (engelsk)Inngår i: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 283, nr 1838, artikkel-id 20161472Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The expansion of pollinator-dependent crops, especially in the developing world, together with reports of worldwide pollinator declines, raises concern of possible yield gaps. Farmers directly reliant on pollination services for food supply often live in regions where our knowledge of pollination services is poor. In a manipulative experiment replicated at 23 sites across an Ethiopian agricultural landscape, we found poor pollination services and severe pollen limitation in a common oil crop. With supplementary pollination, the yield increased on average by 91%. Despite the heterogeneous agricultural matrix, we found a low bee abundance, which may explain poor pollination services. The variation in pollen limitation was unrelated to surrounding forest cover, local bee richness and bee abundance. While practices that commonly increase pollinators (restricted pesticide use, flower strips) are an integral part of the landscape, these elements are apparently insufficient. Management to increase pollination services is therefore in need of urgent investigation.

sted, utgiver, år, opplag, sider
2016. Vol. 283, nr 1838, artikkel-id 20161472
Emneord [en]
Brassica napus, forest cover, landscape composition, pollination services, sub-Saharan Africa, yield gaps
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-137535DOI: 10.1098/rspb.2016.1472ISI: 000386195400009OAI: oai:DiVA.org:su-137535DiVA, id: diva2:1066046
Tilgjengelig fra: 2017-01-17 Laget: 2017-01-09 Sist oppdatert: 2020-03-05bibliografisk kontrollert

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