Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean
Hydrothermal vents modify and displace subsurface dissolved organic matter (DOM) into the ocean. Once in the ocean, this DOM is transported together with elements, particles, dissolved gases and biomass along with the neutrally buoyant plume layer. Considering the number and extent of actively venti...
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Online Access: | https://hdl.handle.net/10037/24913 https://doi.org/10.5194/bg-19-2101-2022 |
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ftunivtroemsoe:oai:munin.uit.no:10037/24913 2023-05-15T14:25:50+02:00 Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean Sert, Muhammed Fatih Niemann, Helge Reeves, Eoghan Granskog, Mats A. Hand, Kevin P. Kekäläinen, Timo Jänis, Janne Rossel, Pamela Ferré, Benedicte Silyakova, Anna Gründger, Friederike 2022-04-20 https://hdl.handle.net/10037/24913 https://doi.org/10.5194/bg-19-2101-2022 eng eng European Geosciences Union Copernicus Publications Sert, Muhammed Fatih; Reeves, Eoghan P.; Hand, Kevin P.; Ferré, Bénédicte, 2022, "Replication data for: Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean", https://doi.org/10.18710/QPGDFW , DataverseNO, V1 Sert, M.F. (2022). Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane. (Doctoral thesis). https://hdl.handle.net/10037/27296 . Biogeosciences Norges forskningsråd: 274330 Norges forskningsråd: 223259 info:eu-repo/grantAgreement/ERC/H2020/856416/EU/DEEP PURPLE: darkening of the Greenland Ice Sheet// info:eu-repo/grantAgreement/ERC/H2020/731077/EU/European Network of Fourier-Transform Ion-Cyclotron-Resonance Mass Spectrometry Centers/EU_FT-ICR_MS/ Sert MF, Niemann H, Reeves E, Granskog MA, Hand KP, Kekäläinen, Jänis J, Rossel P, Ferré B, Silyakova A, Gründger F. Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean. Biogeosciences. 2022;19:2101-2120, https://doi.org/10.5194/bg-19-2101-2022 FRIDAID 2019006 https://doi.org/10.5194/bg-19-2101-2022 1726-4170 1726-4189 https://hdl.handle.net/10037/24913 openAccess Copyright 2022 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.5194/bg-19-2101-2022 https://doi.org/10.18710/QPGDFW 2022-11-10T00:01:31Z Hydrothermal vents modify and displace subsurface dissolved organic matter (DOM) into the ocean. Once in the ocean, this DOM is transported together with elements, particles, dissolved gases and biomass along with the neutrally buoyant plume layer. Considering the number and extent of actively venting hydrothermal sites in the oceans, their contribution to the oceanic DOM pool may be substantial. Here, we investigate the dynamics of DOM in relation to hydrothermal venting and related processes at the as yet unexplored Aurora hydrothermal vent field within the ultraslow-spreading Gakkel Ridge in the Arctic Ocean at 82.9∘ N. We examined the vertical distribution of DOM composition from sea ice to deep waters at six hydrocast stations distal to the active vent and its neutrally buoyant plume layer. In comparison to background seawater, we found that the DOM in waters directly affected by the hydrothermal plume was molecularly less diverse and 5 %–10 % lower in number of molecular formulas associated with the molecular categories related to lipid and protein-like compounds. On the other hand, samples that were not directly affected by the plume were chemically more diverse and had a higher percentage of chemical formulas associated with the carbohydrate-like category. Our results suggest that hydrothermal processes at Aurora may influence the DOM distribution in the bathypelagic ocean by spreading more thermally and/or chemically induced compositions, while DOM compositions in epipelagic and mesopelagic layers are mainly governed by the microbial carbon pump dynamics and surface-ocean–sea-ice interactions Article in Journal/Newspaper Arctic Arctic Arctic Ocean Sea ice ice covered waters University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Biogeosciences 19 8 2101 2120 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Hydrothermal vents modify and displace subsurface dissolved organic matter (DOM) into the ocean. Once in the ocean, this DOM is transported together with elements, particles, dissolved gases and biomass along with the neutrally buoyant plume layer. Considering the number and extent of actively venting hydrothermal sites in the oceans, their contribution to the oceanic DOM pool may be substantial. Here, we investigate the dynamics of DOM in relation to hydrothermal venting and related processes at the as yet unexplored Aurora hydrothermal vent field within the ultraslow-spreading Gakkel Ridge in the Arctic Ocean at 82.9∘ N. We examined the vertical distribution of DOM composition from sea ice to deep waters at six hydrocast stations distal to the active vent and its neutrally buoyant plume layer. In comparison to background seawater, we found that the DOM in waters directly affected by the hydrothermal plume was molecularly less diverse and 5 %–10 % lower in number of molecular formulas associated with the molecular categories related to lipid and protein-like compounds. On the other hand, samples that were not directly affected by the plume were chemically more diverse and had a higher percentage of chemical formulas associated with the carbohydrate-like category. Our results suggest that hydrothermal processes at Aurora may influence the DOM distribution in the bathypelagic ocean by spreading more thermally and/or chemically induced compositions, while DOM compositions in epipelagic and mesopelagic layers are mainly governed by the microbial carbon pump dynamics and surface-ocean–sea-ice interactions |
format |
Article in Journal/Newspaper |
author |
Sert, Muhammed Fatih Niemann, Helge Reeves, Eoghan Granskog, Mats A. Hand, Kevin P. Kekäläinen, Timo Jänis, Janne Rossel, Pamela Ferré, Benedicte Silyakova, Anna Gründger, Friederike |
spellingShingle |
Sert, Muhammed Fatih Niemann, Helge Reeves, Eoghan Granskog, Mats A. Hand, Kevin P. Kekäläinen, Timo Jänis, Janne Rossel, Pamela Ferré, Benedicte Silyakova, Anna Gründger, Friederike Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean |
author_facet |
Sert, Muhammed Fatih Niemann, Helge Reeves, Eoghan Granskog, Mats A. Hand, Kevin P. Kekäläinen, Timo Jänis, Janne Rossel, Pamela Ferré, Benedicte Silyakova, Anna Gründger, Friederike |
author_sort |
Sert, Muhammed Fatih |
title |
Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean |
title_short |
Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean |
title_full |
Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean |
title_fullStr |
Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean |
title_full_unstemmed |
Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean |
title_sort |
compositions of dissolved organic matter in the ice-covered waters above the aurora hydrothermal vent system, gakkel ridge, arctic ocean |
publisher |
European Geosciences Union |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/24913 https://doi.org/10.5194/bg-19-2101-2022 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Gakkel Ridge |
geographic_facet |
Arctic Arctic Ocean Gakkel Ridge |
genre |
Arctic Arctic Arctic Ocean Sea ice ice covered waters |
genre_facet |
Arctic Arctic Arctic Ocean Sea ice ice covered waters |
op_relation |
Sert, Muhammed Fatih; Reeves, Eoghan P.; Hand, Kevin P.; Ferré, Bénédicte, 2022, "Replication data for: Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean", https://doi.org/10.18710/QPGDFW , DataverseNO, V1 Sert, M.F. (2022). Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane. (Doctoral thesis). https://hdl.handle.net/10037/27296 . Biogeosciences Norges forskningsråd: 274330 Norges forskningsråd: 223259 info:eu-repo/grantAgreement/ERC/H2020/856416/EU/DEEP PURPLE: darkening of the Greenland Ice Sheet// info:eu-repo/grantAgreement/ERC/H2020/731077/EU/European Network of Fourier-Transform Ion-Cyclotron-Resonance Mass Spectrometry Centers/EU_FT-ICR_MS/ Sert MF, Niemann H, Reeves E, Granskog MA, Hand KP, Kekäläinen, Jänis J, Rossel P, Ferré B, Silyakova A, Gründger F. Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean. Biogeosciences. 2022;19:2101-2120, https://doi.org/10.5194/bg-19-2101-2022 FRIDAID 2019006 https://doi.org/10.5194/bg-19-2101-2022 1726-4170 1726-4189 https://hdl.handle.net/10037/24913 |
op_rights |
openAccess Copyright 2022 The Author(s) |
op_doi |
https://doi.org/10.5194/bg-19-2101-2022 https://doi.org/10.18710/QPGDFW |
container_title |
Biogeosciences |
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19 |
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8 |
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2101 |
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2120 |
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1766298299497709568 |