FIGURE 3.

Biogeographic patterns and ecological processes of bacterial and fungal communities. (A) Distance-decay relationships showing Bray-Curtis similarities of bacterial and fungal communities against spatial distance among sampling sites. Solid lines denote the fitness of ordinary least-squares regressions. (B) Selection/dispersal limitation ratio of bacterial and fungal communities estimated by variation partitioning analyses and null model analyses. (C) Violin plots illustrating mean habitat niche breadth from all OTUs in each sample (Bcom) of bacterial versus fungal communities. Black dot represents the mean value of Bcom and error bars indicate standard deviation. (D) Violin plots showing mean shared proportions (%) of sequences of bacterial and fungal communities, which represents the potential dispersal abilities (D). The significance of difference between bacteria and fungi were determined by Wilcoxon rank sum test. ***, P < 0.001.