Fig. 1

Microbial OTU richness in sponge-associated microbial communities at phylum level. The Greengenes annotation of the representative sequences for sponge-associated OTUs detected by the Global Sponge Microbiome [23] was used to create this chart. A diversity of 43,034 OTUs from 39 classified microbial phyla (bacteria and archaea) was detected in the microbiomes of the 81 sponge species in this project [23]