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Decreased losses of woody plant foliage to insects in large urban areas are explained by bird predation [Global Change Biology]

Keywords : ant predation, background insect herbivory, bird predation, host plant quality, leafminers, tritrophic interactions, urban ecology

par Frédéric Magné - publié le

Despite the increasing rate of urbanization, the consequences of this process on biotic interactions remain insufficiently studied. Our aims were to identify the general pattern of urbanization impact on background insect herbivory, to explore variations in this impact related to characteristics of both urban areas and insect–plant systems, and to uncover the factors governing urbanization impacts on insect herbivory. We compared the foliar damage inflicted on the most common trees by defoliating, leafmining and gall-forming insects in rural and urban habitats associated with 16 European cities.(...)

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