Compositional differences in dissolved organic matter between Arctic cold seeps versus non-seep sites at the Svalbard Continental Margin and the Barents Sea
Dissociating gas hydrates, submerged permafrost, and gas bearing sediments release methane to the water column from a multitude of seeps in the Arctic Ocean. The seeping methane dissolves and supports the growth of aerobic methane oxidizing bacteria (MOB), but the effect of seepage and seep related...
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Language: | English |
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Online Access: | https://www.vliz.be/imisdocs/publications/40/357040.pdf |
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ftnioz:oai:imis.nioz.nl:332512 2023-05-15T14:57:48+02:00 Compositional differences in dissolved organic matter between Arctic cold seeps versus non-seep sites at the Svalbard Continental Margin and the Barents Sea Sert, M.F. D’Andrilli, J. Gründger, F. Niemann, H. Granskog, M.A. Pavlov, A.K. Ferré, B. Silyakova, A. 2020 application/pdf https://www.vliz.be/imisdocs/publications/40/357040.pdf en eng info:eu-repo/semantics/altIdentifier/wos/000600390800001 info:eu-repo/semantics/altIdentifier/doi/.org/10.3389/feart.2020.552731 https://www.vliz.be/imisdocs/publications/40/357040.pdf info:eu-repo/semantics/openAccess %3Ci%3EFront.+Earth+Sci.+8%3C%2Fi%3E%3A+552731.+%3Ca+href%3D%22https%3A%2F%2Fdoi.org%2F10.3389%2Ffeart.2020.552731%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdoi.org%2F10.3389%2Ffeart.2020.552731%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2020 ftnioz https://doi.org/10.3389/feart.2020.552731 2022-05-01T14:13:32Z Dissociating gas hydrates, submerged permafrost, and gas bearing sediments release methane to the water column from a multitude of seeps in the Arctic Ocean. The seeping methane dissolves and supports the growth of aerobic methane oxidizing bacteria (MOB), but the effect of seepage and seep related biogeochemical processes on water column dissolved organic matter (DOM) dynamics is not well constrained. We compared dissolved methane, nutrients, chlorophyll, and particulate matter concentrations and methane oxidation (MOx) rates from previously characterized seep and non-seep areas at the continental margin of Svalbard and the Barents Sea in May and June 2017. DOM molecular composition was determined by Electrospray Ionization Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS). We found that the chemical diversity of DOM was 3 to 5% higher and constituted more protein- and lipid-like composition near methane seeps when compared to non-seep areas. Distributions of nutrients, chlorophyll, and particulate matter however, were essentially governed by the water column hydrography and primary production. We surmise that the organic intermediates directly derived from seepage or indirectly from seep-related biogeochemical processes, e.g., MOx, modifies the composition of DOM leading to distinct DOM molecular-level signatures in the water column at cold seeps. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea permafrost Svalbard NIOZ Repository (Royal Netherlands Institute for Sea Research) Arctic Arctic Ocean Barents Sea Svalbard Frontiers in Earth Science 8 |
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Open Polar |
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NIOZ Repository (Royal Netherlands Institute for Sea Research) |
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ftnioz |
language |
English |
description |
Dissociating gas hydrates, submerged permafrost, and gas bearing sediments release methane to the water column from a multitude of seeps in the Arctic Ocean. The seeping methane dissolves and supports the growth of aerobic methane oxidizing bacteria (MOB), but the effect of seepage and seep related biogeochemical processes on water column dissolved organic matter (DOM) dynamics is not well constrained. We compared dissolved methane, nutrients, chlorophyll, and particulate matter concentrations and methane oxidation (MOx) rates from previously characterized seep and non-seep areas at the continental margin of Svalbard and the Barents Sea in May and June 2017. DOM molecular composition was determined by Electrospray Ionization Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS). We found that the chemical diversity of DOM was 3 to 5% higher and constituted more protein- and lipid-like composition near methane seeps when compared to non-seep areas. Distributions of nutrients, chlorophyll, and particulate matter however, were essentially governed by the water column hydrography and primary production. We surmise that the organic intermediates directly derived from seepage or indirectly from seep-related biogeochemical processes, e.g., MOx, modifies the composition of DOM leading to distinct DOM molecular-level signatures in the water column at cold seeps. |
format |
Article in Journal/Newspaper |
author |
Sert, M.F. D’Andrilli, J. Gründger, F. Niemann, H. Granskog, M.A. Pavlov, A.K. Ferré, B. Silyakova, A. |
spellingShingle |
Sert, M.F. D’Andrilli, J. Gründger, F. Niemann, H. Granskog, M.A. Pavlov, A.K. Ferré, B. Silyakova, A. Compositional differences in dissolved organic matter between Arctic cold seeps versus non-seep sites at the Svalbard Continental Margin and the Barents Sea |
author_facet |
Sert, M.F. D’Andrilli, J. Gründger, F. Niemann, H. Granskog, M.A. Pavlov, A.K. Ferré, B. Silyakova, A. |
author_sort |
Sert, M.F. |
title |
Compositional differences in dissolved organic matter between Arctic cold seeps versus non-seep sites at the Svalbard Continental Margin and the Barents Sea |
title_short |
Compositional differences in dissolved organic matter between Arctic cold seeps versus non-seep sites at the Svalbard Continental Margin and the Barents Sea |
title_full |
Compositional differences in dissolved organic matter between Arctic cold seeps versus non-seep sites at the Svalbard Continental Margin and the Barents Sea |
title_fullStr |
Compositional differences in dissolved organic matter between Arctic cold seeps versus non-seep sites at the Svalbard Continental Margin and the Barents Sea |
title_full_unstemmed |
Compositional differences in dissolved organic matter between Arctic cold seeps versus non-seep sites at the Svalbard Continental Margin and the Barents Sea |
title_sort |
compositional differences in dissolved organic matter between arctic cold seeps versus non-seep sites at the svalbard continental margin and the barents sea |
publishDate |
2020 |
url |
https://www.vliz.be/imisdocs/publications/40/357040.pdf |
geographic |
Arctic Arctic Ocean Barents Sea Svalbard |
geographic_facet |
Arctic Arctic Ocean Barents Sea Svalbard |
genre |
Arctic Arctic Ocean Barents Sea permafrost Svalbard |
genre_facet |
Arctic Arctic Ocean Barents Sea permafrost Svalbard |
op_source |
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op_relation |
info:eu-repo/semantics/altIdentifier/wos/000600390800001 info:eu-repo/semantics/altIdentifier/doi/.org/10.3389/feart.2020.552731 https://www.vliz.be/imisdocs/publications/40/357040.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/feart.2020.552731 |
container_title |
Frontiers in Earth Science |
container_volume |
8 |
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1766329909325594624 |