Fig. 3From: Association of running manner with bacterial community dynamics in a partial short-term nitrifying bioreactor for treatment of piggery wastewater with high ammonia content a Neighbor-joining tree of AOB OTUs based on 16S rRNA gene fragments. b Relative abundance of these OTUs during the entire experimental period. Dotted lines as in Fig. 1. Bootstrap values (>50 %) shown on branch nodes are based on 1000 trials. Bar evolutionary distance 0.05Back to article page