Fig. 1

Clustering similar environments based on 16S rRNA sequence profiles. a Predicted 16S rRNA fragments from community sequencing data sets were mapped to full-length 16S rRNA sequences from SILVA database at 98% identity threshold. Redundant full-length sequences were then clustered at 98% identity threshold. b Full-length 16S rRNA sequences were assigned to environments based on mapped fragments. c Environments were clustered based on the similarity in their full-length 16S rRNA sequence profiles (Methods). Eleven non-singleton clusters were identified