Fig. 4From: Microbial community compositions in different functional zones of Carrousel oxidation ditch system for domestic wastewater treatmentProfile clustering Cytoscape network visualize the top 50 abundant OTUs across the anaerobic-zone (A1) (red), anoxic-zone (A2) (green) and oxic-zone (O) (blue) in carrousel oxidization ditch system. Node sizes pie chart presented the relative abundances of the OTU over the respective samplesBack to article page