Anaerobic methane oxidation coupled to denitrification is the dominant methane sink in a deep lake
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- Joerg S. Deutzmann
- Department of Biology, University of Constance, D-78457 Constance, Germany;
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- Peter Stief
- Microsensor Group, Max Planck Institute for Marine Microbiology, D-28359 Bremen, Germany; and
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- Josephin Brandes
- Department of Biology, University of Constance, D-78457 Constance, Germany;
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- Bernhard Schink
- Department of Biology, University of Constance, D-78457 Constance, Germany;
書誌事項
- 公開日
- 2014-12-03
- DOI
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- 10.1073/pnas.1411617111
- 公開者
- Proceedings of the National Academy of Sciences
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説明
<jats:title>Significance</jats:title> <jats:p>Evidence whether the recently discovered denitrification-dependent methane oxidation (nitrate/nitrite-dependent anaerobic methane oxidation, n-damo) represents a major methane sink or an insignificant side aspect in the global methane cycle is scarce. High-resolution microprofiles measured in intact sediment cores close to in situ conditions, anoxic incubations of intact sediments, and quantification of the responsible microorganisms with molecular techniques proved n-damo to be the major methane sink in Lake Constance, one of the best-studied freshwater lakes. The n-damo process has long been overlooked because of the close proximity of aerobic and anaerobic activities. Our study documents that a large part of methane previously thought to be oxidized aerobically is in fact oxidized anaerobically by physiologically entirely different organisms.</jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 111 (51), 18273-18278, 2014-12-03
Proceedings of the National Academy of Sciences
