Extended Data Fig. 6: Association network of environmental variables and relative importance of community assembly processes.
From: Environmental stress mediates groundwater microbial community assembly
Links show significant correlation (cross-validated R2CV > 0.01 and P < 0.05); P values (one-sided) were calculated based on permutational test (1000 times) for correlations among environmental factors and Mantel test (permutated 1000 times) for correlations between assembly processes and environmental factors, then, adjusted by false discovery rate (FDR) method; line width reflecting the R2CV. Node area is related to its degree (associated node number). Nodes are grouped by modules based on greedy optimization. Dep. (T) and Dep. (B), depth of the screen top and bottom, respectively; geo.distance, geographic distance; cond., conductivity. Heterogeneous selection (HeS) showed much more strong associations with environmental variables and mainly with pH and metals in water phase (supernatant and suspended solid). The numerous gray links demonstrated the high density of strong associations among environmental variables.
