Figure 2. The variance of taxonomic richness explained by environment (PC1 and PC2 axes) and space (closeness centrality) of the studied organism groups of both passive and active dispersers, ordered according to body size within the two categories. The shared portion of the explained variance (grey shading) is shown at the top of the bars of both space and environment. .p<0.1, *p<0.05, **p<0.005, ***p<0.001