title: Effects of temperature and pressure on sulfate reduction and anaerobic oxidation of methane in hydrothermal sediments of Guaymas Basin.
abstract: Rates of sulfate reduction (SR) and anaerobic oxidation of methane (AOM) in hydrothermal deep-sea sediments from Guaymas Basin were measured at temperatures of 5 to 200 degrees C and pressures of 1 x 10(5), 2.2 x 10(7), and 4.5 x 10(7) Pa. A maximum SR of several micromoles per cubic centimeter per day was found at between 60 and 95 degrees C and 2.2 x 10(7) and 4.5 x 10(7) Pa. Maximal AOM was observed at 35 to 90 degrees C but generally accounted for less than 5% of SR.
authors.affiliation: Max Planck Institute for Marine Microbiology, 28359 Bremen, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Kallmeyer
authors.forename: Antje
authors.initials: A
authors.lastname: Boetius
mesh_terms: D000693:Anaerobiosis; D019015:Geologic Sediments / Q000382:microbiology*; D008697:Methane / Q000378:metabolism*; D010084:Oxidation-Reduction; D011312:Pressure; D012623:Seawater / Q000382:microbiology*; D013431:Sulfates / Q000378:metabolism*; D013696:Temperature; D041962:Thiotrichaceae / Q000378:metabolism*
chemical_list: D013431:Sulfates; D008697:Methane