Is the CH4, H2 and CO venting from submarine hydrothermal systems produced by thermophilic bacteria?

@article{Baross1982IsTC,
  title={Is the CH4, H2 and CO venting from submarine hydrothermal systems produced by thermophilic bacteria?},
  author={John A. Baross and Marvin D. Lilley and Louis Irwin Gordon},
  journal={Nature},
  year={1982},
  volume={298},
  pages={366-368}
}
Submarine hydrothermal vents are a major source of methane to the oceans1,2. The methane, as well as H2 and CO, are generally believed to result from degassing of the mantle or from abiogenic water–rock reactions1, a conclusion supported by direct correlations between 3He and CH4, and generally between CH4, H2 and CO and dissolved silicate in hydrothermal waters2,3. An alternative source for these gases might be microbiological. This would imply that active bacterial communities exist in deep… 

CH4, H2, CO and N2O in submarine hydrothermal vent waters

Hydrothermal circulation systems of mid-ocean ridges profoundly influence the chemistry of the oceans and the oceanic crust1–3. This has been demonstrated for several major and minor constituents of

Microbial Processes at Deep Sea Hydrothermal Vents

The primary production of organic carbon by chemosynthetic sulfur-oxidizing bacteria has been proposed to provide the base of the food chain for the extensive populations of animals found at

Reduced Gases and Bacteria in Hydrothermal Fluids: The Galapagos Spreading Center and 21°N East Pacific Rise

Hydrothermal fluids at the Galapagos Spreading Center (GSC) and at 21°N on the East Pacific Rise were enriched in methane, hydrogen and carbon monoxide by orders of magnitude over ambient bottom

Microbial activities in the emitted hydrothermal waters of the Galápagos rift vents

The rates of bacterial metabolic activities in emitted vent water are too low for the amount of invertebrate biomass and the rate of its growth and maintenance, and the larger portion of chemosynthetic sustenance of deep sea vent ecosystems appears to be based on symbiotic associations between bacteria and invertebrates and on surface attached bacteria.

Geomicrobiology of Deep-Sea Hydrothermal Vents

Bacteria grow most abundantly in the shallow crust where upwelling hot, reducing hydrothermal fluid mixes with downwelling cold, oxygenated seawater, but the predominant production of biomass is the result of symbiotic associations between chemolithotrophic bacteria and certain invertebrates, which have also been found in Cretaceous sulfide ores of ophiolite deposits.

Geochemistry of some gases in hydrothermal fluids from the southern Juan de Fuca Ridge

Five samples of hydrothermal fluids from two vent areas on the southern Juan de Fuca Ridge were analyzed for dissolved gases. Concentrations in the end-member hydrothermal fluid of H2 (270–527

Dissolved methane and hydrogen in the Steinahóll hydrothermal plume, 63°N, Reykjanes Ridge

Abstract Dissolved concentrations of CH4, H2 and Mn have been measured in a hydrothermal plume above the shallow water (c. 250m) Steinahóll vent site at 63°N on the Reykjanes Ridge. Samples were

Review Lecture - The chemosynthetic support of life and the microbial diversity at deep-sea hydrothermal vents

  • H. Jannasch
  • Environmental Science
    Proceedings of the Royal Society of London. Series B. Biological Sciences
  • 1985
Circulation of seawater through the upper few kilometres of oceanic crust at tectonic spreading zones results in a transformation of geothermal into chemical energy. Reduced inorganic species are
...

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