Methanogenesis microbes

Jansen, S., Gonzalez-Gil, G., and Leeuwen, H.P.V., The impact of Co and Ni speciation on methanogenesis in sulfidic media—biouptake versus metal dissolution, Enzyme Microb Technol, 40 (4), 823-830, 2007. 

Fig. 22.8. Energy yields for various anaerobic (top) and aerobic (bottom) metabolisms during mixing of a subsea hydrothermal fluid with seawater, expressed as a function of temperature, per kg of hydrothermal water. Energy yields for acetoclastic methanogenesis and acetotrophic sulfate reduction under oxic conditions are hypothetical, since microbes from these functional groups are strict anaerobes and cannot live in the presence of dioxygen.

Beeman R. E. and Suflita J. M. (1990) Environmental factors influencing methanogenesis in a shallow anoxic aquifer a field and a laboratory study. J. Ind. Microb. 5, 45-58. 

In the absence of O2, competition among anaerobic microbes for electron donors sets up a series of alternative terminal electron-accepting processes in the order NO reduction, Mn(lV) reduction, Fe(III) reduction, SO -- reduction, and methanogenesis (Figure 9.2 Ponnamperuma, 1972 Megonigal et al., 2004). To a lirsi approximation, a single terminal electron-accepting process dominates... 

Broudiscou LP, Papon Y, Brodiscou AF (2000) Effects of dry plant extracts on fermentation and methanogenesis in continuous culture of rumen microbes. Anim Feed Sci Technol 87 263-277... 

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