Fig. 3

Co-occurrence network and ordination analysis of the cutC gene community. Panel a displays the co-occurrence network based on the clustering result presented in Fig. 2b. Connected nodes (clusters) are co-occurring (p < 0.01, Spearman’s ρ ≥ 0.5, false-discovery correction q-value <0.01) where only clusters that are detected in at least 50% of samples were considered for analysis. Nodes lacking a letter fulfill criteria for co-occurrence analysis, but are not depicted in Fig. 2 due to their low abundance. Node size illustrates relative abundance of the respective cluster. Color codes represent specific clades (clusters a and b from clade I are illustrated as clade Ia and clade Ib, respectively; clade II: cluster g; clade III: cluster j; XIVa: clusters closely related to Clostridium XIVa strains; others: clusters related to other taxa) presented in Fig. 2b. Additional clusters that are not shown in Fig. 2 are color-coded according to their respective clades. Panel b illustrates non-metric multidimensional scaling analysis (Bray-Curtis dissimilarity) of entire cutC gene communities with abundances of clusters depicted in panel a highlighted for each sample. Numbers refer to corresponding samples shown in Fig. 2