Please let me know if the following references/sites are useful to you:

1.  Correlating microbial community profiles with geochemical data in

...

http://www.pnas.org/content/109/42/E2846.fullOct 16, 2012 ... Although the same taxa were generally present in all samples, their relative ... the past decade have changed our perception of microbial life in the inaccessible deep ... Geochemical pore water profiles in marine sediments show distinct redox zones .... Composition and Diversity of the Microbial Community.

2.  Marine Deep Sediment Microbial Communities - Springer

http://link.springer.com/10.1007%2F978-3-642-30123-0_42Most deep sediment samples for deep subsurface microbial research were ... characterized by unexpected evolutionary depth and metabolic diversity, ... geochemical porewater profiles, and measurements of microbial process ... in deep marine sediments, microbial life could persist in sediments of several kilometers depth.

3.  Metabolically active microbial communities in marine sediment ...

http://www.nature.com/ismej/journal/v7/n3/full/ismej2012124a.htmlOct 25, 2012 ... Measurement of the potential sulfate reduction rate at pH conditions of 3–9 ... These activity-sensitive analyses expand our knowledge of microbial life and deep-sea ecosystems under ... Sediment samples were obtained from the Yonaguni Knoll IV ..... Diversity of metabolically active microbial communities.

Dennis

Dennis Mazur