Fig. 10: Relative abundance of nitrogen removal bacteria in different locations.

a AOB; b NOB; c DB. AOB, NOB, and DB represent ammonia-oxidizing bacteria, nitrite-oxidizing bacteria, and denitrifying bacteria. NW, AW, IW, and CK represent the natural lake water group, simulated lake water + Microcystis aeruginosa group, simulated lake water + kaolin group, and simulated lake water group, respectively. NWL, AWL, IWL, and CKL are the corresponding groups with underwater light source.