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Table 1 Overview of five taxonomic classifications

From: SILVA, RDP, Greengenes, NCBI and OTT — how do these taxonomies compare?

Taxonomy Type No. of nodes Lowest rank Latest release
SILVA Manual 12,117 Genus Sep 2016
RDP Semi 6,128 Genus Sep 2016
Greengenes Automatic 3,093 Species May 2013
NCBI Manual 1,522,150 Species Todaya
OTT Automatic 2,627,066 Species Sep 2016
  1. aFor the analyses we have used NCBI taxonomy as published on 5th Oct 2016