Figure
5. Linear regression of ERR slopes as a function of the first
phylogenetic principal components (pPC1).Each point represents a
species-rich plant family (n=49), with size of point representative ofMalesian richness . Two families labeled as examples for
comparisons between plots: 1) Dipterocarpaceae and 2) Ericaceae.
Negative pPC1 scores represent stronger Sundaland endemism(represented by magenta tones) or overlap , as well as higherrichness ratio , which is proportion of Malesian richness
concentrated within a single 100 m elevational band. Positive pPC1
scores represent Sahul endemism (cyan tones) or greater montane
affiliation based on lower or upper average
elevational limits for occurrence, peak in richness at
higher elevations, or broader familial elevational extent of
occurrence. Results using linear
regression with slope shown in black, phylogenetic independent contrasts
slope in red.