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Landscape configurational heterogeneity by small-scale agriculture, not crop diversity, maintains pollinators and plant reproduction in western Europe

Hass, Annika L. (författare)
University of Göttingen
Kormann, Urs G. (författare)
University of Göttingen,Oregon State University
Tscharntke, Teja (författare)
University of Göttingen
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Clough, Yann (författare)
Lund University,Lunds universitet,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Centre for Environmental and Climate Science (CEC),Faculty of Science,University of Göttingen
Baillod, Aliette Bosem (författare)
University of Göttingen
Sirami, Clélia (författare)
Paul Valéry University of Montpellier,INRA National Institute of Agricultural Research
Fahrig, Lenore (författare)
Carleton University
Martin, Jean Louis (författare)
Paul Valéry University of Montpellier
Baudry, Jacques (författare)
INRA National Institute of Agricultural Research
Bertrand, Colette (författare)
INRA National Institute of Agricultural Research
Bosch, Jordi (författare)
Centre for Ecological Research and Forestry (CERAF)
Brotons, Lluís (författare)
Centre for Ecological Research and Forestry (CERAF),CSIC Spanish National Research Council
Bure, Françoise (författare)
The French National Centre for Scientific Research (CNRS)
Georges, Romain (författare)
The French National Centre for Scientific Research (CNRS)
Giralt, David (författare)
Forest Technology Centre of Catalonia
Marcos-García, María (författare)
University of Alicante
Ricarte, Antonio (författare)
University of Alicante
Siriwardena, Gavin (författare)
British Trust for Ornithology
Batáry, Péter (författare)
University of Göttingen,MTA Centre for Ecological Research
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 (creator_code:org_t)
2018-02-14
2018
Engelska.
Ingår i: Proceedings of the Royal Society B: Biological Sciences. - : The Royal Society. - 0962-8452 .- 1471-2954. ; 285:1872
Relaterad länk:
http://dx.doi.org/10...
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https://royalsociety...
https://lup.lub.lu.s...
https://doi.org/10.1...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Agricultural intensification is one of the main causes for the current biodiversity crisis. While reversing habitat loss on agricultural land is challenging, increasing the farmland configurational heterogeneity (higher field border density) and farmland compositional heterogeneity (higher crop diversity) has been proposed to counteract some habitat loss. Here, we tested whether increased farmland configurational and compositional heterogeneity promote wild pollinators and plant reproduction in 229 landscapes located in four major western European agricultural regions. High-field border density consistently increased wild bee abundance and seed set of radish (Raphanus sativus), probably through enhanced connectivity. In particular, we demonstrate the importance of crop-crop borders for pollinator movement as an additional experiment showed higher transfer of a pollen analogue along crop-crop borders than across fields or along semi-natural crop borders. By contrast, high crop diversity reduced bee abundance, probably due to an increase of crop types with particularly intensive management. This highlights the importance of crop identity when higher crop diversity is promoted. Our results show that small-scale agricultural systems can boost pollinators and plant reproduction. Agri-environmental policies should therefore aim to halt and reverse the current trend of increasing field sizes and to reduce the amount of crop types with particularly intensive management.

Ämnesord

LANTBRUKSVETENSKAPER  -- Annan lantbruksvetenskap -- Miljö- och naturvårdsvetenskap (hsv//swe)
AGRICULTURAL SCIENCES  -- Other Agricultural Sciences -- Environmental Sciences related to Agriculture and Land-use (hsv//eng)

Nyckelord

Bee
Compositional heterogeneity
Field size
Hoverfly
Landscape heterogeneity
Pollen transfer

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