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Long-term sustainability of a high-energy, low-diversity crustal biome |
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| Authors: | Lin Li-Hung Wang Pei-Ling Rumble Douglas Lippmann-Pipke Johanna Boice Erik Pratt Lisa M Sherwood Lollar Barbara Brodie Eoin L Hazen Terry C Andersen Gary L DeSantis Todd Z Moser Duane P Kershaw Dave Onstott T C |
| Institution: | Department of Geosciences, Princeton University, Princeton, NJ, USA. lhlin@ntu.edu.tw |
| Abstract: | Geochemical, microbiological, and molecular analyses of alkaline saline groundwater at 2.8 kilometers depth in Archaean metabasalt revealed a microbial biome dominated by a single phylotype affiliated with thermophilic sulfate reducers belonging to Firmicutes. These sulfate reducers were sustained by geologically produced sulfate and hydrogen at concentrations sufficient to maintain activities for millions of years with no apparent reliance on photosynthetically derived substrates. |
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