Community characterization of enrichment cultures based on relative abundance of ASVs. The results of the 16S rRNA amplicon sequencing, ASVs with ≥0.1% relative abundance are plotted for each culture used in the analyses (A–D). Panel E uses 16S rRNA data from the Bedford Basin weekly time series to show percent abundance in the Bedford Basin of ASVs with ≥1% abundance in the cultures for the 5 m depth from the years 2014–2017. (additional information on cultures is provided in Table S2 and on ASVs in Table S4).