#Database_OTU Count Abundance Taxonomy 4413732 1 0.166667 Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales; Rhodobacteraceae; Rubellimicrobium; Unclassified; otu_4413732 2214064 5 0.833333 Bacteria; Proteobacteria; Deltaproteobacteria; Desulfarculales; Desulfarculaceae; Desulfatiglans; Unclassified; otu_2214064