Fig. s2.
Comparison of the pore water profiles of
SO42-, CH4 and
alkalinity of two cores from one each of the two deep-sea trenches
investigated and from a core recovered from the upper slope depot center
of the high production area off Namibia (Riedinger et al., 2006).
Although the total organic carbon content in the sediments from the both
trenches investigated in this study is on average 6 times lower,
comparable turnover rates are observed. The relatively low
CH4 concentrations may be caused by outgassing during
core retrieval.