Fig. 1.

A The resulting PCA with variables available for Moina macrocopa used for the PCA-env approach of Broennimann et al. (2012). B Comparison between the native and exotic ranges of M. macrocopa. Niche occupied by M. macrocopa in its native range (orange), in its invasive range in America (green) and composed niche overlap of both ranges (purple). The continuous line represents the 100% of available environmental background and the dashed line represents the 50% most common conditions. See Figure S2 for the contribution of each variable to the PCA axes