Fig. 5
Prediction of major functional groups. a. The test R21:1 of nitrifiers, denitrifiers, PAOs, GAOs, and filamentous organisms. b. Heatmap of importance weights of environmental factors in the predictive models of functional groups. Errors bars in these graphs show the 95% credible intervals of the mean values. Statistical analysis was performed using a two-sample Student's t-test: ***, p < 0.001; n.s, p > 0.05, no significance