Species richness
We recorded 178 species, of which seven angiosperms could not be identified, leaving 171 species identified for phylogenetic purposes: 86 woody species and 86 non-woody species (Table S1). We recorded 106 species near roads and 115 species in plots far from road. In plots near roads we sampled 1059 individuals belonging to 49 species, and in plots far from roads we sampled 1176 individuals belonging to 63 species. Plots near roads presented significantly lower species richness than plots far from roads (p<0.001). We sampled 57 non-woody species in plots near roads and 52 in plots far from roads. Species richness of non-woody plants did not differ between plots near roads and plots far from the roads (p=0.760).