Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane
Dissolved organic matter (DOM) is defined as organic matter that is smaller than a nominal pore size filter (e.g., 0.7 µm) that passes through during the filtration of aquatic samples. It comprises the largest reservoir of reduced carbon (700 Pg C) in the oceans. The DOM pool is in close interaction...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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UiT Norges arktiske universitet
2022
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Online Access: | https://hdl.handle.net/10037/27296 |
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ftunivtroemsoe:oai:munin.uit.no:10037/27296 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural science: 400::Chemistry: 440::Environmental chemistry natural environmental chemistry: 446 VDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Miljøkjemi naturmiljøkjemi: 446 VDP::Mathematics and natural science: 400::Chemistry: 440::Analytical chemistry: 445 VDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Analytisk kjemi: 445 DOKTOR-004 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural science: 400::Chemistry: 440::Environmental chemistry natural environmental chemistry: 446 VDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Miljøkjemi naturmiljøkjemi: 446 VDP::Mathematics and natural science: 400::Chemistry: 440::Analytical chemistry: 445 VDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Analytisk kjemi: 445 DOKTOR-004 Sert, Muhammed Fatih Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural science: 400::Chemistry: 440::Environmental chemistry natural environmental chemistry: 446 VDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Miljøkjemi naturmiljøkjemi: 446 VDP::Mathematics and natural science: 400::Chemistry: 440::Analytical chemistry: 445 VDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Analytisk kjemi: 445 DOKTOR-004 |
description |
Dissolved organic matter (DOM) is defined as organic matter that is smaller than a nominal pore size filter (e.g., 0.7 µm) that passes through during the filtration of aquatic samples. It comprises the largest reservoir of reduced carbon (700 Pg C) in the oceans. The DOM pool is in close interaction with all the elemental cycles and food chains in the ocean and is an essential component in the marine microbial loop. Methane is seeping from numerous geological sources in the Arctic Ocean associated with multiple mechanisms that elevate methane production and release. Independent of the mechanism, however, liberated methane is predominantly consumed in the water column by methanotrophic bacteria (MOB), which use methane as a source of carbon and energy during an aerobic enzymatic reaction called methane oxidation (MOx). In sedimentary fluid flow systems such as cold seeps or hydrothermal vents, the amount of methane release and subsequent MOx would be substantial and further trigger other ecosystem processes such as bacterial growth and heterotrophic consumption and consequent mechanisms that alter DOM composition in the water column. Since methane is one of the most potent greenhouse gasses in the atmosphere and due to its subsequent effect on global warming, it has been quantified extensively in the oceanic environments and its fate in the water column has been investigated in different types of geological settings. However, the effects of methane emanation and methane-driven processes on DOM dynamics in the water column have been merely constrained. The main objective of this thesis was to unravel the modifications of DOM composition in relation to methane release in the Arctic Ocean cold seeps and hydrothermal vents. |
format |
Doctoral or Postdoctoral Thesis |
author |
Sert, Muhammed Fatih |
author_facet |
Sert, Muhammed Fatih |
author_sort |
Sert, Muhammed Fatih |
title |
Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane |
title_short |
Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane |
title_full |
Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane |
title_fullStr |
Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane |
title_full_unstemmed |
Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane |
title_sort |
biogeochemistry of dissolved organic matter in arctic ocean waters charged with methane |
publisher |
UiT Norges arktiske universitet |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/27296 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Global warming |
genre_facet |
Arctic Arctic Arctic Ocean Global warming |
op_relation |
Paper I: Sert, M.F., D’Andrilli, J., Gründger, F., Niemann, H., Granskog, M.A., Pavlov, A.K., Ferré, B. & Silyakova, A. (2020). Compositional Differences in Dissolved Organic Matter Between Arctic Cold Seeps Versus Non-Seep Sites at the Svalbard Continental Margin and the Barents Sea. Frontiers in Earth Sciences, 8 , 552731. Also available in Munin at https://hdl.handle.net/10037/20176 . Paper II: Sert, M.F., Niemann, H., Reeves, E.P., Granskog, M.A., Hand, K.P., Kekäläinen, T., … Gründger, F. (2022). Composition of dissolved organic matter in the ice-covered water column above hydrothermal vents at the Aurora Seamount, Gakkel Ridge, Arctic Ocean. Biogeosciences, 19 , 2101–2120. Also available in Munin at https://hdl.handle.net/10037/24913 . Paper III: Sert, M.F., de Groot, T., Kekäläinen, T., Jänis, J., Gründger, F., Niemann, H. & Silyakova, A. Elevated methane alters dissolved organic matter composition in the Arctic Ocean cold seeps. (Manuscript). Paper I: Sert, M.F., D'Andrilli, J., Gründger, F., Niemann, H., Granskog, M.A., Pavlov, A.K., Ferré, B. & Silyakova, A. (2020). Replication Data for: Arctic cold seeps alter dissolved organic matter composition at the Svalbard continental margin and the Barents Sea. DataverseNO, V1. https://doi.org/10.18710/JHB371 . Paper II: Sert, M.F., Reeves, E.P., Hand, K.P. & Ferré, B. (2022). Replication data for: Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean. DataverseNO, V1. https://doi.org/10.18710/QPGDFW . Paper III: Sert, M.F. (2022). Replication Data for: Elevated methane alters dissolved organic matter composition in the Arctic Ocean cold seeps. Github. https://github.com/fatihserta/Incubation_2022.git . 978-82-8236-495-9 https://hdl.handle.net/10037/27296 |
op_rights |
embargoedAccess Copyright 2022 The Author(s) |
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1766296572199436288 |
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ftunivtroemsoe:oai:munin.uit.no:10037/27296 2023-05-15T14:24:06+02:00 Biogeochemistry of dissolved organic matter in Arctic Ocean waters charged with methane Sert, Muhammed Fatih 2022-11-25 https://hdl.handle.net/10037/27296 eng eng UiT Norges arktiske universitet UiT The Arctic University of Norway Paper I: Sert, M.F., D’Andrilli, J., Gründger, F., Niemann, H., Granskog, M.A., Pavlov, A.K., Ferré, B. & Silyakova, A. (2020). Compositional Differences in Dissolved Organic Matter Between Arctic Cold Seeps Versus Non-Seep Sites at the Svalbard Continental Margin and the Barents Sea. Frontiers in Earth Sciences, 8 , 552731. Also available in Munin at https://hdl.handle.net/10037/20176 . Paper II: Sert, M.F., Niemann, H., Reeves, E.P., Granskog, M.A., Hand, K.P., Kekäläinen, T., … Gründger, F. (2022). Composition of dissolved organic matter in the ice-covered water column above hydrothermal vents at the Aurora Seamount, Gakkel Ridge, Arctic Ocean. Biogeosciences, 19 , 2101–2120. Also available in Munin at https://hdl.handle.net/10037/24913 . Paper III: Sert, M.F., de Groot, T., Kekäläinen, T., Jänis, J., Gründger, F., Niemann, H. & Silyakova, A. Elevated methane alters dissolved organic matter composition in the Arctic Ocean cold seeps. (Manuscript). Paper I: Sert, M.F., D'Andrilli, J., Gründger, F., Niemann, H., Granskog, M.A., Pavlov, A.K., Ferré, B. & Silyakova, A. (2020). Replication Data for: Arctic cold seeps alter dissolved organic matter composition at the Svalbard continental margin and the Barents Sea. DataverseNO, V1. https://doi.org/10.18710/JHB371 . Paper II: Sert, M.F., Reeves, E.P., Hand, K.P. & Ferré, B. (2022). Replication data for: Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean. DataverseNO, V1. https://doi.org/10.18710/QPGDFW . Paper III: Sert, M.F. (2022). Replication Data for: Elevated methane alters dissolved organic matter composition in the Arctic Ocean cold seeps. Github. https://github.com/fatihserta/Incubation_2022.git . 978-82-8236-495-9 https://hdl.handle.net/10037/27296 embargoedAccess Copyright 2022 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452 VDP::Mathematics and natural science: 400::Chemistry: 440::Environmental chemistry natural environmental chemistry: 446 VDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Miljøkjemi naturmiljøkjemi: 446 VDP::Mathematics and natural science: 400::Chemistry: 440::Analytical chemistry: 445 VDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Analytisk kjemi: 445 DOKTOR-004 Doctoral thesis Doktorgradsavhandling 2022 ftunivtroemsoe 2022-11-10T00:01:31Z Dissolved organic matter (DOM) is defined as organic matter that is smaller than a nominal pore size filter (e.g., 0.7 µm) that passes through during the filtration of aquatic samples. It comprises the largest reservoir of reduced carbon (700 Pg C) in the oceans. The DOM pool is in close interaction with all the elemental cycles and food chains in the ocean and is an essential component in the marine microbial loop. Methane is seeping from numerous geological sources in the Arctic Ocean associated with multiple mechanisms that elevate methane production and release. Independent of the mechanism, however, liberated methane is predominantly consumed in the water column by methanotrophic bacteria (MOB), which use methane as a source of carbon and energy during an aerobic enzymatic reaction called methane oxidation (MOx). In sedimentary fluid flow systems such as cold seeps or hydrothermal vents, the amount of methane release and subsequent MOx would be substantial and further trigger other ecosystem processes such as bacterial growth and heterotrophic consumption and consequent mechanisms that alter DOM composition in the water column. Since methane is one of the most potent greenhouse gasses in the atmosphere and due to its subsequent effect on global warming, it has been quantified extensively in the oceanic environments and its fate in the water column has been investigated in different types of geological settings. However, the effects of methane emanation and methane-driven processes on DOM dynamics in the water column have been merely constrained. The main objective of this thesis was to unravel the modifications of DOM composition in relation to methane release in the Arctic Ocean cold seeps and hydrothermal vents. Doctoral or Postdoctoral Thesis Arctic Arctic Arctic Ocean Global warming University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean |