1986
DOI: 10.1016/0883-2927(86)90085-5
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Comparison of microbial* gases from the Middle America Trench and Scripps Submarine Canyon: implications for the origin of natural gas

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Cited by 104 publications
(49 citation statements)
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“…Indeed, it has been reported that pore water in a variety of marine sediments contain micromolar amounts of acetate (44), concentrations that severely restrict the amount of energy available for ATP synthesis, which argues in favor of an essential requirement for the Mrp complex during acetotrophic growth of M. acetivorans in its native environment. M. acetivorans was isolated from a submarine canyon containing sediments with a high fraction of organic material that continually accumulated from the littoral zone (23), which results in an estimated fraction of methanogenesis from acetate of between 50 and 70% based on isotopic analysis (2). Since the pH and salinity were not recorded for the site and the time of isolation, the pH (6.8) and salinity level (0.54 M) tested were based on the published values for optimal growth of M. acetivorans (23).…”
Section: Discussionmentioning
confidence: 99%
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“…Indeed, it has been reported that pore water in a variety of marine sediments contain micromolar amounts of acetate (44), concentrations that severely restrict the amount of energy available for ATP synthesis, which argues in favor of an essential requirement for the Mrp complex during acetotrophic growth of M. acetivorans in its native environment. M. acetivorans was isolated from a submarine canyon containing sediments with a high fraction of organic material that continually accumulated from the littoral zone (23), which results in an estimated fraction of methanogenesis from acetate of between 50 and 70% based on isotopic analysis (2). Since the pH and salinity were not recorded for the site and the time of isolation, the pH (6.8) and salinity level (0.54 M) tested were based on the published values for optimal growth of M. acetivorans (23).…”
Section: Discussionmentioning
confidence: 99%
“…cetate is the major source of biological methane in both freshwater and marine environments (1,2). Only two genera (Methanosarcina and Methanosaeta) of acetate-utilizing methaneproducing microbes are known, of which Methanosarcina species have been researched to a greater extent.…”
mentioning
confidence: 99%
“…2). Bacterial methane formation follows two principal pathways (i.e., CO 2 reduction and fermentation; Schoell, 1980;Jenden and Kaplan, 1986;Martens et al, 1986;Whiticar et al, 1986;Burke et al, 1988). The fermentation processes are usually more important in recent freshwater sediments and swamps, while methane formed by CO 2 reduction is most common in marine sediments (Whiticar et al, 1986).…”
Section: The δmentioning
confidence: 99%
“…In general, biogenic methane is isotopically light with methane δ 13 C values ranging from -55 to -90 permil (Rice and Claypool, 1981;Rice, 1993). However, biogenic methane can be as heavy as -40 permil, which can be produced by reduction of isotopically heavy carbon dioxide (Jenden and Kaplan, 1986). Thus, the gas from the Tyonek coal beds may be slightly biogenic but mostly thermogenic.…”
Section: Southern Alaska-cook Inlet Coal Provincementioning
confidence: 99%