Methane production in aerobic oligotrophic surface water in the central Arctic Ocean
A methane surplus relative to the atmospheric equilibrium is a frequently observed feature of ocean surface water. Despite the common fact that biological processes are responsible for its origin, the formation of methane in aerobic surface water is still poorly understood. We report on methane prod...
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ftdoajarticles:oai:doaj.org/article:9b0a996473a44e5f8fccc196872b5f60 2023-05-15T14:49:38+02:00 Methane production in aerobic oligotrophic surface water in the central Arctic Ocean E. Damm E. Helmke S. Thoms U. Schauer E. Nöthig K. Bakker R. P. Kiene 2010-03-01T00:00:00Z https://doaj.org/article/9b0a996473a44e5f8fccc196872b5f60 EN eng Copernicus Publications http://www.biogeosciences.net/7/1099/2010/bg-7-1099-2010.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/9b0a996473a44e5f8fccc196872b5f60 Biogeosciences, Vol 7, Iss 3, Pp 1099-1108 (2010) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2010 ftdoajarticles 2022-12-30T22:28:43Z A methane surplus relative to the atmospheric equilibrium is a frequently observed feature of ocean surface water. Despite the common fact that biological processes are responsible for its origin, the formation of methane in aerobic surface water is still poorly understood. We report on methane production in the central Arctic Ocean, which was exclusively detected in Pacific derived water but not nearby in Atlantic derived water. The two water masses are distinguished by their different nitrate to phosphate ratios. We show that methane production occurs if nitrate is depleted but phosphate is available as a P source. Apparently the low N:P ratio enhances the ability of bacteria to compete for phosphate while the phytoplankton metabolite dimethylsulfoniopropionate (DMSP) is utilized as a C source. This was verified by experimentally induced methane production in DMSP spiked Arctic sea water. Accordingly we propose that methylated compounds may serve as precursors for methane and thermodynamic calculations show that methylotrophic methanogenesis can provide energy in aerobic environments. Article in Journal/Newspaper Arctic Arctic Ocean Phytoplankton Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Pacific |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 E. Damm E. Helmke S. Thoms U. Schauer E. Nöthig K. Bakker R. P. Kiene Methane production in aerobic oligotrophic surface water in the central Arctic Ocean |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
A methane surplus relative to the atmospheric equilibrium is a frequently observed feature of ocean surface water. Despite the common fact that biological processes are responsible for its origin, the formation of methane in aerobic surface water is still poorly understood. We report on methane production in the central Arctic Ocean, which was exclusively detected in Pacific derived water but not nearby in Atlantic derived water. The two water masses are distinguished by their different nitrate to phosphate ratios. We show that methane production occurs if nitrate is depleted but phosphate is available as a P source. Apparently the low N:P ratio enhances the ability of bacteria to compete for phosphate while the phytoplankton metabolite dimethylsulfoniopropionate (DMSP) is utilized as a C source. This was verified by experimentally induced methane production in DMSP spiked Arctic sea water. Accordingly we propose that methylated compounds may serve as precursors for methane and thermodynamic calculations show that methylotrophic methanogenesis can provide energy in aerobic environments. |
format |
Article in Journal/Newspaper |
author |
E. Damm E. Helmke S. Thoms U. Schauer E. Nöthig K. Bakker R. P. Kiene |
author_facet |
E. Damm E. Helmke S. Thoms U. Schauer E. Nöthig K. Bakker R. P. Kiene |
author_sort |
E. Damm |
title |
Methane production in aerobic oligotrophic surface water in the central Arctic Ocean |
title_short |
Methane production in aerobic oligotrophic surface water in the central Arctic Ocean |
title_full |
Methane production in aerobic oligotrophic surface water in the central Arctic Ocean |
title_fullStr |
Methane production in aerobic oligotrophic surface water in the central Arctic Ocean |
title_full_unstemmed |
Methane production in aerobic oligotrophic surface water in the central Arctic Ocean |
title_sort |
methane production in aerobic oligotrophic surface water in the central arctic ocean |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
https://doaj.org/article/9b0a996473a44e5f8fccc196872b5f60 |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean Phytoplankton |
genre_facet |
Arctic Arctic Ocean Phytoplankton |
op_source |
Biogeosciences, Vol 7, Iss 3, Pp 1099-1108 (2010) |
op_relation |
http://www.biogeosciences.net/7/1099/2010/bg-7-1099-2010.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/9b0a996473a44e5f8fccc196872b5f60 |
_version_ |
1766320707503915008 |