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Journal Articles Ecology Letters Year : 2021

Habitat amount and distribution modify community dynamics under climate change

Abstract

Habitat fragmentation may present a major impediment to species range shifts caused by climate change, but how it affects local community dynamics in a changing climate has so far not been adequately investigated empirically. Using long-term monitoring data of butterfly assemblages, we tested the effects of the amount and distribution of semi-natural habitat (SNH), moderated by species traits, on climate-driven species turnover. We found that spatially dispersed SNH favoured the colonisation of warm-adapted and mobile species. In contrast, extinction risk of cold-adapted species increased in dispersed (as opposed to aggregated) habitats and when the amount of SNH was low. Strengthening habitat networks by maintaining or creating stepping-stone patches could thus allow warm-adapted species to expand their range, while increasing the area of natural habitat and its spatial cohesion may be important to aid the local persistence of species threatened by a warming climate.
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Dates and versions

hal-03167905 , version 1 (12-03-2021)

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Yoan Fourcade, Michiel F Wallisdevries, Mikko Kuussaari, Chris van Swaay, Janne Heliölä, et al.. Habitat amount and distribution modify community dynamics under climate change. Ecology Letters, 2021, 24 (5), pp.950-957. ⟨10.1111/ele.13691⟩. ⟨hal-03167905⟩
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