Figure 1.

Neotropical biomes and climatic assemblage assignment test. Geographical distribution of (a) dry and (b) humid biomes in the Neotropics. (a) Seasonally deciduous dry forest (SDDF; brown), savannah (yellow), dry montane valley (DMV; maroon), and desert and xeric shrubland (orange). (b) Humid forest (green). Results from climatic assemblage assignment test are shown in (c). Each column represents a species pair (in alphabetical order; see the electronic supplementary material) and the colour indicates the proportion of climatic data (y-axis) from each pair (x-axis) that is assigned to the dry (brown) and humid (green) groups.