Fig. 5From: The bacterial community significantly promotes cast iron corrosion in reclaimed wastewater distribution systemsTemporal trajectories in the community composition of the yellow and black layers are presented in the ordination space of principal coordinate analysis (PCoA) based on weighted UniFrac distance for the a NaClOdisinfection reactor, b NONdisinfection reactor, and c UVdisinfection reactor. Trajectories were presented by lines that sequentially connect sampling points. Circles highlighted initial attachment stage I and terminal stable stage III. Other plots were classified as mid-term development stage IIBack to article page