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. 2017 Nov 24;12(1):161–172. doi: 10.1038/ismej.2017.151

Figure 1.

Figure 1

Rank-abundance distribution of Symbiodinium taxa (that is, OTUs) in hard corals and other symbiotic anthozoans from the Arabian Seas (a) and correlation between presence in coral samples (measured by degree) and the number of reads per OTU (b). The power-law relationship indicates that the Symbiodinium community is comprised of few abundant and many rare members with a prevalence that scales sub-linearly with abundance, that is, Symbiodinium OTUs are not randomly distributed, but concentrated across hosts. (c) Richness, S, measured as the number of distinct OTUs and (d) number of reads of the most abundant OTUs as a function of the total number of reads. The fit shows S~N0.5 and Nmax~N0.9.