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Edge contrast does not modulate edge effect on plants and pollinators

Andrieu, Emilie and Cabanettes, Alain and Alignier, Audrey and Van Halder, Inge and Alard, Didier and Archaux, Frédéric and Barbaro, Luc and Bouget, Christophe and Bailey, Samantha and Corcket, Emmanuel and Deconchat, Marc and Vigan, Martin and Villemey, Anne and Ouin, Annie Edge contrast does not modulate edge effect on plants and pollinators. (2018) Basic and Applied Ecology, 27. 83-95. ISSN 1439-1791

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Official URL: http://doi.org/10.1016/j.baae.2017.11.003

Abstract

Edge contrast, is one of the main determinants of edge effects. This study examines the response of plant and pollinator diversity (bees and butterflies) to forest edge contrast, i.e. the difference between forests and adjacent open habitats with different disturbance regimes. We also investigated a potential cascading effect from plants to pollinators and whether edge structure and landscape composition mediate the relationship between edge contrast and beta diversity of pollinators. We sampled 51 lowcontrast edges where forests were adjacent to habitats showing low levels of disturbance (i.e. grey dunes, mowed fire-breaks, orchards, grasslands) and 29 high-contrast edges where forests were adjacent to more intensively disturbed habitats (i.e. tilled firebreaks, oilseed rape) in three regions of France. We showed that plant diversities were higher in edges than in adjacent open habitat, whatever the edge contrast. However, plant beta diversity did not differ significantly between low and highcontrast edges. While we observed higher pollinator diversities in adjacent habitats than in low-contrast edges, there were no significant differences in pollinator beta diversity depending on edge contrast. We did not observe a cascading effect from plants to pollinators. Plant and bee beta diversities were mainly explained by local factors (edge structure and flower cover) while butterfly beta diversity was explained by surrounding landscape characteristics (proportion of land cover in grassland).

Item Type:Article
ProdINRA Id:415083
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Agrocampus Ouest (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
French research institutions > Institut national de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture - IRSTEA (FRANCE)
Other partners > Ecole Supérieure d’Agricultures - ESA (FRANCE)
Other partners > Université de Bordeaux (FRANCE)
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Deposited By: INRA INRA
Deposited On:28 May 2018 07:55

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