Fig 1.

Bacterial community composition in CF and CW environments. (A) Relative abundance of bacterial genera present in at least three samples with a % assigned read abundance of at least 1%. 26 unique genera were identified in CF samples and 36 in CW samples. “Bacteroidetes(U)” were members of the phylum Bacteroidetes that lacked specific genus level classification. “Others” were genera identified at a relative abundance less than 1% and in fewer than three samples. (B) Distribution of the number of species with a relative abundance of at least 1% in CF and CW samples. (C) The Shannon diversity index of each sample. (D) Distribution of the Simpson diversity index of each sample. (E) Distribution of the percentage of reads assigned to anaerobes (closed circles) and facultative anaerobes (open circles) in each sample in the CF and CW environments. For plots B–E, CF samples are in blue and CW samples are in red. P values and brackets indicate comparisons that were deemed statistically significant.