Ricerc@Sapienza

As rates of global warming increase rapidly, identifying species at risk of decline dueto climate impacts and the factors affecting this risk have become key challenges inecology and conservation biology. Here, we present a framework for assessing threecomponents of climate-related risk for species: vulnerability, exposure and hazard.We used the relationship between the observed response of species to climatechange and a set of intrinsic traits (e.g. weaning age) and extrinsic factors (e.g.

Understanding changes in species distributions is essential to disentangle the mechanisms that drive their responses to anthropogenic habitat modification. Here we analyse the past (1970s) and current (2017) distribution of 204 species of terrestrial non-volant mammals to identify drivers of recent contraction and expansion in their range. We find 106 species lost part of their past range, and 40 of them declined by >50%. The key correlates of this contraction are large body mass, increase in air temperature, loss of natural land, and high human population density.