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Applied and Environmental Microbiology, December 2005, p. 8925-8928, Vol. 71, No. 12
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.12.8925-8928.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Cooccurrence of Aerobic and Anaerobic Methane Oxidation in the Water Column of Lake Plußsee

Gundula Eller,1 Layla Känel,2 and Martin Krüger2,3*

Max Planck Institute for Limnology, August-Thienemann-Strasse 2, 24306 Plön, Germany,1 Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany,2 Geomicrobiology, Federal Institute for Geosciences and Natural Resources, Stilleweg 2, 30655 Hannover, Germany3

Received 19 June 2005/ Accepted 6 September 2005

Dissolved methane was investigated in the water column of eutrophic Lake Plußsee and compared to temperature, oxygen, and sulfide profiles. Methane concentrations and {delta}-13C signatures indicated a zone of aerobic methane oxidation and additionally a zone of anaerobic methane oxidation in the anoxic water body. The latter coincided with a peak in hydrogen sulfide concentration. High cell numbers of aerobic and anaerobic methane-oxidizing microorganisms were detected by fluorescence in situ hybridization (FISH) or the more sensitive catalyst-amplified reporter deposition-FISH, respectively, in these layers.

* Corresponding author. Mailing address: Geomicrobiology, Federal Institute for Geosciences and Natural Resources, Stilleweg 2, 30655 Hannover, Germany. Phone: 49-(0)511-6433102. Fax: 49-(0)511-6433664. E-mail: M.Krueger{at}bgr.de.

Applied and Environmental Microbiology, December 2005, p. 8925-8928, Vol. 71, No. 12
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.12.8925-8928.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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