#Database_OTU Count Abundance Taxonomy 151819 1 0.666667 Bacteria; Bacteroidetes; Cytophagia; Cytophagales; Cytophagaceae; Cytophagaceae_Group; Unclassified; otu_151819 4394922 1 0.333333 Bacteria; Proteobacteria; Betaproteobacteria; Nitrosomonadales; Nitrosomonadaceae; Nitrosomonadaceae_Group; Unclassified; otu_4394922