Figure 4

(a) Composition of bacterial communities within coral microbiomes in Abrolhos Bank: host coral taxa and sampling sites are indicated. Bars represent the community composition of each coral specimen; color bars indicate the most abundant bacterial genera and grayscale bars represent zOTUs grouped by phylum. (b) Boxplots of richness (top) and Shannon diversity index (bottom) of the bacterial community discriminated by host species taxon (left) and reef site (right). Letters indicate significant differences (Wilcoxon’s pairwise comparisons test, p < 0.05 after BH correction). Tests and boxplot size were calculated without ESQ samples to Species measures and only by MOCA and MUHA to site measures, however, their values were indicated in plots by dots. (c) Nonmetric multidimensional scaling (nMDS) diagram of dissimilarities within communities (Bray–Curtis distance, square root transformed relative zOTU abundances). Colors correspond to host species (FAGR Favia gravida, MOCA Montastraea cavernosa, MUBR Mussismilia braziliensis, MUHA Mussismilia harttii) and symbols to reef sites (SG Sebastião Gomes, PAB Parcel dos Abrolhos, TIM Timbebas, ESQ Esquecidos Reef).