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La ville un désert pour les abeilles sauvages ?

Abstract : ABSTRACT: Urban ecosystems are expanding worldwide and are often considered as biological deserts. However, environmentally‑friendly management practices may promote the maintenance of urban communities. Such is the case for wild bees (super family Apoideae) with an increasing number of studies reporting relatively diverse bee assemblages in densely urbanized habitats. Here, we report some examples found in the bibliography of cities harbouring relatively diverse bee assemblages, although different methods were used to sample wild bees. We also provide new data concerning the wild bee fauna in the city of Paris (France). During a two‑year field campaign carried out in 7 locations in downtown Paris, we captured 360 individuals belonging to 51 species. This raises the bee species richness in Paris to 67 species. Although this assemblage only represents 6.9 %of the French bee fauna and shows characteristics of a depauperate community (low abundance of parasitic species, dominance of the Halictidae family), some of the Parisian localities sampled exhibit relatively important species richness. This diversity should be preserved given the global pollination crisis and the current context of increasing urbanization. However, emerging management practices in urban environments, such as massive introductions of domesticated honeybee colonies (more than 700 hives are currently established in downtown Paris) could negatively impact on these communities of urban pollinators.
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Submitted on : Wednesday, January 17, 2018 - 11:12:49 PM
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Lise Ropars, Isabelle Dajoz, Benoit Geslin. La ville un désert pour les abeilles sauvages ?. Journal de Botanique, Société botanique de France, 2017, 79, pp.29 - 35. ⟨halshs-01686939⟩

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