| Popis: |
Identification of different microorganisms in deep terrestrial subsurface environments and modern sampling methods have opened the way to the understanding of microbial life in this kind of allobiosphere. Methanogenic bacteria also have been found to be a member of bacterial communities in some underground environments (Ward and Olson, 1980; Brassel et al., 1981; Ward et al., 1985). In a water-saturated structure of an artificially created subsurface reservoir of town gas, some constituents of which are hydrogen and carbon dioxide, a diminution of stored town gas and its enrichment with methane was observed. Since methanogenic bacteria exhibit an extreme diversity, and most of them can grow with hydrogen and carbon dioxide as their sole carbon and energy source (Balch et al., 1979), we regard them as one of the chief agents for the changes observed. |
