#Database_OTU Count Abundance Taxonomy 219934 3484 0.999426 Bacteria; Proteobacteria; Alphaproteobacteria; Rhodospirillales; Rhodospirillaceae; Rhodospirillaceae_Group; Unclassified; otu_219934 2440443 2 0.000573723 Archaea; Euryarchaeota; Thermoplasmata; E2; Unclassified; Unclassified; Unclassified; otu_2440443