Figure 3.

Relative abundance of mcrA mRNA transcripts from methanogens associated with groundwater collected on day 53 when acetate concentrations were 6.71 mM and day 95 when acetate concentrations were below detection.

Relative abundance of mcrA mRNA transcripts from methanogens associated with groundwater collected on day 53 when acetate concentrations were 6.71 mM and day 95 when acetate concentrations were below detection.