Fig. 13: Heatmap of the correlation between environmental variables and the abundance of P removal species/functional bacteria.

PAQs and PAOs are phosphorus-accumulating organisms and glycogen-accumulating organisms. NTU, WT, ORP, DO, TN, NH4+-N, NO3−-N, TP, PO43−-P, NO2−-N, CHl, SOD, and MDA represent turbidity, water temperature, redox potential, dissolved oxygen, total nitrogen, ammonia nitrogen, nitrate nitrogen, total phosphorus, phosphate, nitrite nitrogen, chlorophyll, activity of superoxide dismutase, and content of malondialdehyde respectively.