Table 1. Elevational range-size (ERR) slopes regressed against metrics of familial distributions across Malesia.
Table of variable definitions and results from across-family analyses using phylogenetic independent contrasts (PIC). To facilitate interpretation of findings and slope comparisons, values shown represent z-scaling of all variables and setting intercepts to zero. The response variable used in each model is abbreviated as ERR, which represents the change in average elevational range-size with elevation (slope), replicated for each species-rich plant family. Predictor variables consisted of metrics of species richness; familial distribution and boundaries along elevational gradients; evolutionary age; latitudinal extent; and biogeographical metrics of overlap, endemism, or cosmopolitanism within Malesia. Analyses were conducted separately for each variable because of covariation among them.