Summary of 16S rRNA gene amplicon sequences from the MIMOSA experiment. Relative abundance of bacterial 16S rRNA gene sequences from the whole genome amplified-DNA extracted from the BOSS samples (pooled in two-week intervals, where “W1” equals weeks 1–2, etc.) of the oiled chamber as compared to a blank extraction control (“Neg”), as grouped by sequence category (potential to be a contaminant). The total number of quality controlled sequences (n) for each sample is shown in parentheses on the y-axis. Detailed description of the rationale for each sequence category is provided in the text. DOI: https://doi.org/10.1525/elementa.129.f8