Fig. 6

Spearman co-occurrence networks of dominant phylotypes, colored according to taxonomy (at phylum level) (A), associated environmental factor (based on the semipartial correlation analysis) (B), and function (according to FAPROTAX predictions and manual annotations) (C). Nodes are sized according to the number of connections (edges). Edges are colored according to nature of the correlation between nodes using the following color scheme: green—positive correlation; red—negative correlation. The top five nodes with the highest number of edges are highlighted by nodes with the thicker black perimeters