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dc.contributor.authorChiffard, Jules
dc.contributor.authorBentaleb, Ilham
dc.contributor.authorYoccoz, Nigel
dc.contributor.authorFourel, François
dc.contributor.authorBlanquet, Elodie
dc.contributor.authorBesnard, Aurélien
dc.date.accessioned2024-02-26T13:16:53Z
dc.date.available2024-02-26T13:16:53Z
dc.date.issued2023-02-18
dc.description.abstractLarge mammalian herbivores (LMH) shape vertebrate communities and structure food webs in many terrestrial ecosystems. However, the mechanisms that underlie the effects of LMH on other vertebrates are poorly understood. In France, domestic LMH have grazed alpine and mountain grasslands for thousands of years, profoundly influencing landscapes and wildlife. As LMH modify habitat structure, favour coprophagous insects and compete with herbivorous insects, the diet of insectivorous alpine birds may be deeply influenced by LMH grazing intensity. To investigate this, we sampled common insectivorous birds faeces (water pipit Anthus spinoletta and wheatear Oenanthe oenanthe) in sites characterized by different levels of grazing intensity by domestic and wild herbivores, in the open landscapes of the southern French Alps and the western Pyrenees. We used isotopic discrimination based on nitrogen stable isotope ratios as an indicator of the trophic level of the arthropods found in bird faeces. From isotopic ratios, we found that bird diets shift from mainly herbivorous arthropods at sites of low grazing intensity, to one mainly composed of other groups, such as predatory, detritivorous or coprophagous arthropods, at sites of higher grazing intensity. This result highlights the strong trophic link between LMH and insectivorous birds in open landscapes, contributing to a better understanding of interactions between domestic grazing, an activity that has historically modelled European landscapes, and biodiversity, with particular relevance for landscape management and bird conservation.en_US
dc.identifier.citationChiffard, Bentaleb, Yoccoz, Fourel, Blanquet, Besnard. Grazing intensity drives a trophic shift in the diet of common alpine birds. Agriculture, Ecosystems & Environment. 2023;348en_US
dc.identifier.cristinIDFRIDAID 2152769
dc.identifier.doi10.1016/j.agee.2023.108418
dc.identifier.issn0167-8809
dc.identifier.issn1873-2305
dc.identifier.urihttps://hdl.handle.net/10037/33041
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalAgriculture, Ecosystems & Environment
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.titleGrazing intensity drives a trophic shift in the diet of common alpine birdsen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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