Environmental variation is a major predictor of global trait turnover in mammals

摘要: Aim To evaluate how environment and evolutionary history interact to influence global patterns of mammal trait diversity (a combination 14 morphological life-history traits). Location The terrestrial environment. Taxon Terrestrial mammals. Methods We calculated spatial turnover for mammalian traits phylogenetic lineages using the mean nearest taxon distance. We then used a variance partitioning approach establish relative contribution conservatism, ecological adaptation clade specific preferences on turnover. Results We provide scale analysis across assemblages, which demonstrates that by itself does not predict better than random expectations. Conversely, is consistently more strongly associated with environmental variation predicted our null models. The clade-specific preferences, reflected shared component variation, was considerably higher Although are dependent under consideration, there consistent association between predictive variables, regardless considered. Main conclusions Our results suggest changes in composition always coupled conditions species both within clades.