Functional traits

We evaluated differences in species richness and number of individuals of each functional trait between plots near roads, and plots further from roads. For these data, we used generalized linear models (Glm), Poisson family, with a logarithmic link function. When residual deviations were greater than the residual degrees of freedom, the standard errors were corrected using a Quasi-Poisson. We assessed significance using the Chi-squared test. All analyses were performed in R statistical environment (R Development Core Team, 2015).