Winners and losers: How the elevational range of breeding birds on Alps has varied over the past four decades due to climate and habitat changes

Ecology and Evolution
Luciano BaniValerio Orioli

Abstract

Climate warming and habitat transformation are widely recognized as worrying threatening factors. Understanding the individual contribution of these two factors to the change of species distribution could be very important in order to effectively counteract the species range contraction, especially in mountains, where alpine species are strongly limited in finding new areas to be colonized at higher elevations. We proposed a method to disentangle the effects of the two drivers of range change for breeding birds in Italian Alps, in the case of co-occurring climate warming and shrub and forest encroachment. For each species, from 1982 to 2017, we related the estimated yearly elevational distribution of birds to the correspondent overall average of the daily minimum temperatures during the breeding season and the estimated amount of shrubs and forest cover. Using a hierarchical partitioning approach, we assessed the net contribution (i.e., without the shared effect) of each driver. Both temperature and shrub and forest cover showed a positive trend along the time series and resulted the most likely causes of the significant elevational displacement for 21 of the 29 investigated birds. While shrub and forest cover was found to be a...Continue Reading

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Citations

Dec 15, 2020·Global Change Biology·Shirin TaheriMiguel B Araújo
Mar 10, 2021·Trends in Ecology & Evolution·Bruno K C FilgueirasMarcelo Tabarelli
Apr 9, 2021·Science Advances·Shirin TaheriMiguel B Araújo
Apr 29, 2021·Biological Reviews of the Cambridge Philosophical Society·Yann VitasseJonathan Lenoir

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