Methane production from bicarbonate and acetate in an anoxic marine sediment

Details Methane production from bicarbonate and acetate in an anoxic marine sediment Methane production from bicarbonate and acetate in an anoxic marine sediment

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986gecoa..50.2089c&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 50, Issue 9, pp.2089-2097

Computer Science

7

Scientific paper

Methane production from 14 C-labelled bicarbonate and acetate was measured over the top 28 cm of anoxic Cape Lookout Bight sediments during the summer of 1983. The depth distribution and magnitude of summed radioisotopically determined rates compare well with previous measurements of total methane production and the sediment-water methane flux. Methane production from CO 2 reduction and acetate fermentation accounts for greater than 80% of the total production rate and sediment-water flux. Methane production from bicarbonate was found to occur in all depth intervals sampled except those in the top 2 cm, whereas significant methane production from acetate only occurred at depths below 10 cm where sulfate was exhausted. Acetate provided 20 to 29% of the measured methane production integrated over the top 30 cm of the sediments.

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