Figure 5.

MRT of environmental factors on the patterns of fungal community structure along the Changjiang River. Fungal community structure was indicated by H′, 1/D, E and F_o. The environmental factors included different sampling locations (upstream, midstream and downstream of the Changjiang River) and environmental variables (organic carbon content, organic matter, total nitrogen, total potassium, total phosphorus, C:N ratio, C:P ratio, pH and temperature). Each split in the figure was represented graphically as a branch in a tree. Bar plots show the multivariate means of diversity estimates at each branch. The numbers of samples included in that splits are shown under bar plots. The average of the replications was applied for each sampling location. U, M and D refer to upstream, midstream and downstream of the Changjiang River, respectively. OCC, organic carbon content; OM, organic matter; TN, total nitrogen; TK, total potassium; TP, total phosphorus; C/N, C:N ratio; C/P, C:P ratio. A full color version of this figure is available at the ISME Journal online.