Fig. 4

Change patterns of key taxonomic abundance across the succession driven by the advent of electron acceptors. a Abundance correlations within the dominant taxa at the phylum level and correlations between taxa abundance and electron acceptors. b Correlation analysis at the genus level. The size and color gradients of circles denote Spearman’s correlation coefficient. Statistical significance of P-values was expressed as ***P < 0.001, **P < 0.01, *P < 0.05. c The transformed redundancy analysis (tRDA) showing the relevance between genera and electron acceptors. d tRDA showing the electron acceptor-driven shift of microbial community structure of PW samples