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Applied and Environmental Microbiology, February 2004, p. 1231-1233, Vol. 70, No. 2
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.2.1231-1233.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Effects of Temperature and Pressure on Sulfate Reduction and Anaerobic Oxidation of Methane in Hydrothermal Sediments of Guaymas Basin{dagger}

Jens Kallmeyer1,2 and Antje Boetius3,4*

Max Planck Institute for Marine Microbiology, 28359 Bremen,1 Geoforschungszentrum Potsdam, 14473 Potsdam,2 Alfred Wegener Institute for Polar and Marine Research, 27515 Bremerhaven,3 International University Bremen, 28759 Bremen, Germany4

Received 30 June 2003/ Accepted 31 October 2003

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°C and pressures of 1 x 105, 2.2 x 107, and 4.5 x 107 Pa. A maximum SR of several micromoles per cubic centimeter per day was found at between 60 and 95°C and 2.2 x 107 and 4.5 x 107 Pa. Maximal AOM was observed at 35 to 90°C but generally accounted for less than 5% of SR.

* Corresponding author. Mailing address: MPI, Celsiusstr. 1, 28359 Bremen, Germany. Phone: 49 421 2028 648. Fax: 49 421 2028 690. E-mail: aboetius{at}mpi-bremen.de.

{dagger} This is publication GEOTECH-42 of the program GEOTECHNOLOGIEN of the Bundesministerium für Bildung und Forschung and the Deutsche Forschungsgemeinschaft.

Applied and Environmental Microbiology, February 2004, p. 1231-1233, Vol. 70, No. 2
0099-2240/04/$08.00+0     DOI: 10.1128/AEM.70.2.1231-1233.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



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