Habitat, spatial and temporal drivers of diversity patterns in a wild bee assemblage

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• 作者：Orianne Rollin ; Vincent Bretagnolle ; Laura Fortel…
• 关键词：Apoidea ; Additive partitioning ; Flowering habitats ; Species richness ; Species accumulation curve ; Functional trait
• 刊名：Biodiversity & Conservation
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：24
• 期：5
• 页码：1195-1214
• 全文大小：1,241 KB
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• 作者单位：Orianne Rollin (1) (2)
  Vincent Bretagnolle (4) (5)
  Laura Fortel (3)
  Laurent Guilbaud (2) (3)
  Micka?l Henry (2) (3)
  
  1. ITSAP-Institut de l’abeille - UMT PrADE, 228 route de l’Aérodrome, Domaine Saint Paul, Site Agroparc, CS 40509, 84914, Avignon Cedex 9, France
  2. UMT Protection des Abeilles dans l’Environnement, 228 route de l’Aérodrome, Domaine Saint Paul, Site Agroparc, CS 40509, 84914, Avignon Cedex 9, France
  4. Centre d’Etudes Biologiques de Chizé, CNRS & Université de la Rochelle, UMR 7372, 79360, Beauvoir-Sur-Niort, France
  5. LTER???Zone Atelier Plaine & Val de Sèvre ?, Centre d’Etudes Biologiques de Chizé, CNRS, 79360, Villiers-En-Bois, France
  3. INRA, UR 406 Abeilles et Environnement, Domaine Saint Paul, Site Agroparc, CS 40509, 84914, Avignon, France
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Evolutionary Biology
  Plant Sciences
  Tree Biology
  
• 出版者：Springer Netherlands
• ISSN：1572-9710

文摘

Across Europe conservation actions have been implemented to mitigate the decline of pollinators in agricultural landscapes. However, recent concerns have appeared about their efficiency to promote pollinator diversity. To increase the efficiency of these interventions, one must acquire a better knowledge of the target species diversity patterns and its sources of variations at different spatial and temporal scales. This study sets out to identify the main sources of variation in wild bee assemblages at a regional scale (450?km2) in mass-flowering crops and semi-natural habitats. During three consecutive sampling years, we monitored bee diversity and its temporal and spatial turnovers. We show that an intensive agricultural landscape in western France can hold nearly 200 wild bee species at a regional scale, i.e. 20?% of the whole bee fauna known in mainland France. Wild bee diversity was 3- times lower in oleaginous crops than in semi-natural habitats, with a substantial number of these being social and gregarious species. Spatial and seasonal species turnover in semi-natural habitats explained 28.6 and 34.3?%, respectively, of regional species richness. Given the importance of the spatial component of the bee diversity turnover, we suggest wild bee conservation efforts should be carried out at relevant spatial scales. The spatial turnover was estimated to be steeper within 50?km2 scales. This provides an order of magnitude for the spatial extent of relevant conservation units within which one may concentrate conservation efforts in order to optimise the number of species promoted per surface area.