Table 2 Determinants of biodiversity of skin microbial communities.

From: Captive bottlenose dolphins and killer whales harbor a species-specific skin microbiota that varies among individuals

Biodiversity facets Taxonomic Phylogenetic
Dissimilarity indices Sorensen Beta-Shannon U-Unifrac W-Unifrac
Factor R2 P R2 P R2 P R2 P
Plankton vs. skin 0.09 0.001 0.36 0.001 0.12 0.001 0.46 0.001
Dolphins vs. K. whales 0.06 0.001 0.14 0.001 0.06 0.001 0.10 0.032
Killer whales
Individuals 0.23 0.010 0.32 0.026 0.24 0.018 0.48 0.002
Body zones 0.19 0.683 0.15 0.805 0.20 0.420 0.10 0.957
Age 0.07 0.105 0.07 0.421 0.08 0.116 0.07 0.316
Sex 0.08 0.092 0.09 0.163 0.07 0.311 0.10 0.159
Dolphins
Individuals 0.22 0.035 0.51 0.001 0.21 0.102 0.60 0.002
Body zones 0.20 0.569 0.10 0.961 0.20 0.663 0.08 0.975
Age 0.07 0.211 0.16 0.044 0.07 0.234 0.36 0.003
Sex 0.07 0.332 0.14 0.068 0.07 0.377 0.31 0.007
  1. Effect of each factor was tested using permutational ANOVAs (PERMANOVAS, 999 permutations) on dissimilarity matrices with for each facet of biodiversity, two indices: one index accounting only for composition of OTUs or phylogenetic lineages (i.e. Sorensen or Unweighted Unifrac), and one index accounting for relative-abundance of OTUs or phylogenetic lineages (i.e. beta-Shannon or weighted Unifrac). Bold P-values (<0.05) indicate a significant effect of the tested factor. Partial R-squared (R2) is the proportion of variation in the dissimilarity matrix explained by the tested factor.