#Database_OTU Count Abundance Taxonomy 4476738 1 0.142857 Bacteria; Firmicutes; Clostridia; Clostridiales; Unclassified; Unclassified; Unclassified; otu_4476738 4359648 1 0.285714 Bacteria; Proteobacteria; Deltaproteobacteria; Desulfobacterales; Desulfobulbaceae; Desulfobulbaceae_Group; Unclassified; otu_4359648 4398438 2 0.571429 Bacteria; Proteobacteria; Deltaproteobacteria; Desulfobacterales; Desulfobulbaceae; Desulfobulbaceae_Group; Unclassified; otu_4398438