Relative contribution of environmental variables to explained variance of the Boosted Regression Trees models of patterns of species richness of each vertebrate group at the pan-European scale.

<p>Environmental variables are detailed in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0131924#pone.0131924.t001" target="_blank">Table 1</a>. Values in brackets are the performance of BRT model for each taxon and expressed as a percent of deviance explained (%).