Seasonal Rates of Methane Oxidation in Anoxic Marine Sediments
AUTOR(ES)
Iversen, Niels
RESUMO
Methane concentrations and rates of methane oxidation were measured in intact sediment cores from an inshore marine sediment at Jutland, Denmark. The rates of methane oxidation, determined by the appearance of 14CO2 from injected 14CH4, varied with sediment depth and season. Most methane oxidation was anoxic, but oxygen may have contributed to methane oxidation at the sediment surface. Cumulative rates (0- to 12-cm depth) for methane oxidation at Kysing Fjord were 3.34, 3.48, 8.60, and 17.04 μmol m−2 day−1 for April (4°C), May (13°C), July (17°C), and August (21°C), respectively. If all of the methane was oxidized by sulfate, it would account for only 0.01 to 0.06% of the sulfate reduction. The data indicate that methane was produced, in addition to being oxidized, in the 0- to 18-cm sediment stratum.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=243914Documentos Relacionados
- Multiple archaeal groups mediate methane oxidation in anoxic cold seep sediments
- Comparative Analysis of Methane-Oxidizing Archaea and Sulfate-Reducing Bacteria in Anoxic Marine Sediments
- Seasonal Study of Methane Oxidation in Lake Washington
- Method for Measuring Rates of NH4+ Turnover in Anoxic Marine Sediments, Using a 15N-NH4+ Dilution Technique
- Demethylation of Dimethylsulfoniopropionate and Production of Thiols in Anoxic Marine Sediments †
