FIG 6.

Relative sequence abundance of OTUs belonging to eight different genera, in response to amendment with different diesel and crude oil concentrations (0, 0.1, and 1% [vol/vol]), with (stimulated) or without (ambient) nutrient addition during 71 days of incubation at 4°C. The numbers of OTUs identified in this study belonging to each genus incorporated into the plotted data are shown in parentheses (Paraperlucidibaca and Thalassolituus, each containing only one OTU, include the closest cultured relatives according to NCBI BLAST searching). Error bars represent standard errors of triplicate microcosms of the same treatment.