Fig. 4: Factors explaining the composition of coral microbiomes across the Pacific Ocean.

Pairwise dissimilarity of microbial communities compared between islands, within islands and within sites at each island for the corals a Millepora, n = 382,542 comparisons, b Porites, n = 892,080 comparisons and c Pocillopora, n = 951,600 comparisons. The dissimilarity is based on Euclidean distance computed from centred log ratio (clr) transformed ASV data. The box plot horizontal bars show the median value, the box indicates the first and third QRs, and the whiskers indicate 1.5*IQR. d Mantel correlation between microbial community composition and geographic distances and environmental factors for the three coral morphotypes. Source data are provided as a Source Data file.