Fig. 5From: Microbial network for waste activated sludge cascade utilization in an integrated system of microbial electrolysis and anaerobic fermentationHierarchical cluster analysis of bacterial communities from sludge fermentative liquid (F) and MEC biofilm (M). The OTUs of y-axis were ordered by phylum (3 % distance). Sample communities were clustered based on complete linkage method. The color intensity of scale indicates relative abundance of each OTU read (sample legends see Fig. 2)Back to article page