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Enhancing plant diversity in agricultural landscapes promotes both rare bees and dominant crop-pollinating bees through complementary increase in key floral resources [Journal of Applied Ecology]

Keywords : agri-environment schemes, multiple ecosystem functioning, endangered species, animal-mediated pollination, ecological focus areas, grassland extensification, nestedness, pollinator conservation, resource use, wild flower strips

par Frédéric Magné - publié le

1.Enhancing key floral resources is essential to effectively mitigate the loss of pollinator diversity and associated provisioning of pollination functions in agro-ecosystems. However, effective floral provisioning measures may diverge among different pollinator conservation targets, such as the conservation of rare species or the promotion of economically important crop pollinators. We examined to what extent such diverging conservation goals could be reconciled.
2.We analysed plant–bee visitation networks of 64 herbaceous semi-natural habitats representing a gradient of plant species richness to identify key resource plants of the three distinct conservation target groups : rare bees (of conservation concern), dominant wild crop-pollinating bees, and managed crop-pollinating bees (i.e. honey bees).(...)

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