A heterogeneous landscape does not guarantee high crop pollination
(2016) In Proceedings of the Royal Society B: Biological Sciences 283(1838).- Abstract
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... (More)
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.
(Less)
- author
- Samnegård, Ulrika LU ; Hambäck, Peter A. ; Lemessa, Debissa ; Nemomissa, Sileshi and Hylander, Kristoffer
- organization
- publishing date
- 2016-09-14
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Brassica napus, Forest cover, Landscape composition, Pollination services, Sub-saharan africa, Yield gaps
- in
- Proceedings of the Royal Society B: Biological Sciences
- volume
- 283
- issue
- 1838
- article number
- 20161472
- publisher
- Royal Society Publishing
- external identifiers
-
- pmid:27629036
- wos:000386195400009
- scopus:84989171968
- ISSN
- 0962-8452
- DOI
- 10.1098/rspb.2016.1472
- language
- English
- LU publication?
- yes
- id
- 34e50d6a-e29f-4029-bc82-cfb70a77951d
- date added to LUP
- 2016-11-17 07:40:08
- date last changed
- 2024-04-05 10:27:32
@article{34e50d6a-e29f-4029-bc82-cfb70a77951d,
abstract = {{<p>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.</p>}},
author = {{Samnegård, Ulrika and Hambäck, Peter A. and Lemessa, Debissa and Nemomissa, Sileshi and Hylander, Kristoffer}},
issn = {{0962-8452}},
keywords = {{Brassica napus; Forest cover; Landscape composition; Pollination services; Sub-saharan africa; Yield gaps}},
language = {{eng}},
month = {{09}},
number = {{1838}},
publisher = {{Royal Society Publishing}},
series = {{Proceedings of the Royal Society B: Biological Sciences}},
title = {{A heterogeneous landscape does not guarantee high crop pollination}},
url = {{http://dx.doi.org/10.1098/rspb.2016.1472}},
doi = {{10.1098/rspb.2016.1472}},
volume = {{283}},
year = {{2016}},
}