Fig. 4

Beta diversity PCoA plots showing Bray-Curtis dissimilarity of polyps from different sites that were maintained in the lab with water from ‘native’ or ‘foreign’ source. (A) The PCoA plot shows dissimilarity among the microbiome of polyps from the three sites (ADONIS, R2 = 0.190758, p = 0.001) (B–D) There was a clear separation between the start samples and the samples receiving either of the waters cumulatively (Bray-Curtis dissimilarity, PERMANOVA: M26- start vs. native—adj.p < 0.05, start vs. foreign—adj.p < 0.05; M52- start vs. native—adj.p < 0.05, start vs. foreign—adj.p < 0.05; M109- start vs. native—adj.p < 0.05, start vs. foreign—adj.p < 0.05).