Figure 5.

pSRRs determined via the cold chromium-distillation method (Kallmeyer et al., 2004). (a) Methane-dependent sulfate reduction at different pH conditions in MUC10 sediment at 10 cm (circles) and 18 cmbsf (triangles). (b) Sediment slurries from MUC8, MUC10 and Dive 201 PC28 were incubated in a 0.2-MPa methane atmosphere (closed red circles, pH 4.5; closed blue triangles, pH 7.5) and in the absence of methane (open red circles, pH 4.5; open blue triangles, pH 7.5).