La route de l’enfer…

Nourrir, protéger, donner des abris aux animaux peut être un bon outil de conservation. Mais ces actions peuvent aussi avoir de nombreux effets indésirables, potentiellement graves, si ces action sont mal menée et/ou trop généralisées. Au Royaume-Uni, le nourrissage et la protection des oiseaux  favorise certaines espèces au détriment d’autres. En Méditerranée et à Paris, les abeilles domestiques, pourtant présentées comme un auxiliaire écologique de premier choix, opposent une concurrence mal supportables aux autres pollinisateurs.

Killing with kindness: Does widespread generalised provisioning of wildlife help or hinder biodiversity conservation efforts? [Texte]
Schutt & Lees
Biological conservation, 2021

Gradual replacement of wild bees by honeybees in flowers of the Mediterranean Basin over the last 50 years
Carlos M. Herrra
Proceedings of the royal society B, 2020
https://royalsocietypublishing.org/doi/10.1098/rspb.2019.2657

The proportion of wild bees at flowers was four times greater than that of honeybees at the beginning of the period, the proportions of both groups becoming roughly similar 50 years later. The Mediterranean Basin is a world biodiversity hotspot for wild bees and wild bee-pollinated plants, and the ubiquitous rise of honeybees to dominance as pollinators could in the long run undermine the diversity of plants and wild bees in the region.

Wild pollinator activity negatively related to honey bee colony densities in urban context
Ropars et al.
PLOS One, 2019
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0222316

Here, we show that in the city of Paris (France), wild pollinator visitation rates are negatively correlated to honey bee colony densities present in the surrounding landscape


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