Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink
Mud volcanism is an important natural source of the greenhouse gas methane to the hydrosphere and atmosphere1, 2. Recent investigations show that the number of active submarine mud volcanoes might be much higher than anticipated (for example, see refs 3?5), and that gas emitted from deep-sea seeps m...
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ftunivbasel:oai:edoc.unibas.ch:16280 2023-05-15T15:38:59+02:00 Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink Niemann, H. Lösekann, T. de Beer, D. Elvert, M. Nadalig, T. Knittel, K. Amann, R. Sauter, E. J. Schlüter, M. Klages, M. Foucher, J. P. Boetius, A. 2006 application/pdf http://edoc.unibas.ch/dok/A5250585 https://edoc.unibas.ch/16280/ https://edoc.unibas.ch/16280/1/20091022103919_4ae01a3754b96.pdf https://doi.org/10.1038/nature05227 eng eng Macmillan https://edoc.unibas.ch/16280/1/20091022103919_4ae01a3754b96.pdf Niemann, H. and Lösekann, T. and de Beer, D. and Elvert, M. and Nadalig, T. and Knittel, K. and Amann, R. and Sauter, E. J. and Schlüter, M. and Klages, M. and Foucher, J. P. and Boetius, A. (2006) Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink. Nature, 443. pp. 854-858. doi:10.1038/nature05227 urn:ISSN:0028-0836 info:eu-repo/semantics/closedAccess Article PeerReviewed 2006 ftunivbasel https://doi.org/10.1038/nature05227 2023-03-05T06:54:34Z Mud volcanism is an important natural source of the greenhouse gas methane to the hydrosphere and atmosphere1, 2. Recent investigations show that the number of active submarine mud volcanoes might be much higher than anticipated (for example, see refs 3?5), and that gas emitted from deep-sea seeps might reach the upper mixed ocean6, 7, 8. Unfortunately, global methane emission from active submarine mud volcanoes cannot be quantified because their number and gas release are unknown9. It is also unclear how efficiently methane-oxidizing microorganisms remove methane. Here we investigate the methane-emitting Haakon Mosby Mud Volcano (HMMV, Barents Sea, 72° N, 14° 44' E; 1,250 m water depth) to provide quantitative estimates of the in situ composition, distribution and activity of methanotrophs in relation to gas emission. The HMMV hosts three key communities: aerobic methanotrophic bacteria (Methylococcales), anaerobic methanotrophic archaea (ANME-2) thriving below siboglinid tubeworms, and a previously undescribed clade of archaea (ANME-3) associated with bacterial mats. We found that the upward flow of sulphate- and oxygen-free mud volcano fluids restricts the availability of these electron acceptors for methane oxidation, and hence the habitat range of methanotrophs. This mechanism limits the capacity of the microbial methane filter at active marine mud volcanoes to Article in Journal/Newspaper Barents Sea University of Basel: edoc Barents Sea Nature 443 7113 854 858 |
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University of Basel: edoc |
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ftunivbasel |
language |
English |
description |
Mud volcanism is an important natural source of the greenhouse gas methane to the hydrosphere and atmosphere1, 2. Recent investigations show that the number of active submarine mud volcanoes might be much higher than anticipated (for example, see refs 3?5), and that gas emitted from deep-sea seeps might reach the upper mixed ocean6, 7, 8. Unfortunately, global methane emission from active submarine mud volcanoes cannot be quantified because their number and gas release are unknown9. It is also unclear how efficiently methane-oxidizing microorganisms remove methane. Here we investigate the methane-emitting Haakon Mosby Mud Volcano (HMMV, Barents Sea, 72° N, 14° 44' E; 1,250 m water depth) to provide quantitative estimates of the in situ composition, distribution and activity of methanotrophs in relation to gas emission. The HMMV hosts three key communities: aerobic methanotrophic bacteria (Methylococcales), anaerobic methanotrophic archaea (ANME-2) thriving below siboglinid tubeworms, and a previously undescribed clade of archaea (ANME-3) associated with bacterial mats. We found that the upward flow of sulphate- and oxygen-free mud volcano fluids restricts the availability of these electron acceptors for methane oxidation, and hence the habitat range of methanotrophs. This mechanism limits the capacity of the microbial methane filter at active marine mud volcanoes to |
format |
Article in Journal/Newspaper |
author |
Niemann, H. Lösekann, T. de Beer, D. Elvert, M. Nadalig, T. Knittel, K. Amann, R. Sauter, E. J. Schlüter, M. Klages, M. Foucher, J. P. Boetius, A. |
spellingShingle |
Niemann, H. Lösekann, T. de Beer, D. Elvert, M. Nadalig, T. Knittel, K. Amann, R. Sauter, E. J. Schlüter, M. Klages, M. Foucher, J. P. Boetius, A. Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink |
author_facet |
Niemann, H. Lösekann, T. de Beer, D. Elvert, M. Nadalig, T. Knittel, K. Amann, R. Sauter, E. J. Schlüter, M. Klages, M. Foucher, J. P. Boetius, A. |
author_sort |
Niemann, H. |
title |
Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink |
title_short |
Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink |
title_full |
Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink |
title_fullStr |
Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink |
title_full_unstemmed |
Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink |
title_sort |
novel microbial communities of the haakon mosby mud volcano and their role as a methane sink |
publisher |
Macmillan |
publishDate |
2006 |
url |
http://edoc.unibas.ch/dok/A5250585 https://edoc.unibas.ch/16280/ https://edoc.unibas.ch/16280/1/20091022103919_4ae01a3754b96.pdf https://doi.org/10.1038/nature05227 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
https://edoc.unibas.ch/16280/1/20091022103919_4ae01a3754b96.pdf Niemann, H. and Lösekann, T. and de Beer, D. and Elvert, M. and Nadalig, T. and Knittel, K. and Amann, R. and Sauter, E. J. and Schlüter, M. and Klages, M. and Foucher, J. P. and Boetius, A. (2006) Novel microbial communities of the Haakon Mosby mud volcano and their role as a methane sink. Nature, 443. pp. 854-858. doi:10.1038/nature05227 urn:ISSN:0028-0836 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1038/nature05227 |
container_title |
Nature |
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443 |
container_issue |
7113 |
container_start_page |
854 |
op_container_end_page |
858 |
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1766370419535773696 |