Figure S2. Empirical trait data coverage for species included from Open Nahele (n=142) (a), for four plant traits specific leaf area (SLA; mm2/mg), wood density (g/cm3), maximum plant height (plant height; m) and leaf nitrogen content (Leaf Nmass; mg/g). Density distribution of empirical trait data versus imputed trait data (b) using phylogenetically informed imputation based on random forest algorithm. Letters on each density plot of a trait correspond to Kruskal-Wallis results (alpha level 0.05). Note that we did not find significant differences between empirical and imputed traits, as both groups of traits shared the same letter. The prediction error of the random forest algorithm from phylogenetic relationships using out-of-bag error (OOB) is also displayed.