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. 2016 Aug 30;4:e2341. doi: 10.7717/peerj.2341

Figure 5. Comparison of absolute alpha diversity values for Shannon, Simpson, Chao1, and OTU count indices across all samples.

Figure 5

OTU tables for each method were rarefied to 10,000 sequences 25 times and the mean diversity calculated across all tables. There was a significant difference in the distribution of diversity values between all methods for all four metrics. De-replicated sequences in particular inflate richness-based measures.