Supplementary material from "Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes"
Process-based, mechanistic investigations of organic matter transformation and diagenesis directly beneath the sediment–water interface (SWI) in Arctic continental shelves are vital as these regions are at greatest risk of future change. This is in part due to disruptions in benthic–pelagic coupling...
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The Royal Society
2020
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ftdatacite:10.6084/m9.figshare.c.5069817.v1 2023-05-15T14:59:19+02:00 Supplementary material from "Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes" Stevenson, Mark A. Faust, Johan C. Andrade, Luiza L. Freitas, Felipe S. Gray, Neil D. Tait, Karen Hendry, Katharine R. Hilton, Robert G. Henley, Sian F. Tessin, Allyson Leary, Peter Papadaki, Sonia Ailbe Ford März, Christian Abbott, Geoffrey D. 2020 https://dx.doi.org/10.6084/m9.figshare.c.5069817.v1 https://rs.figshare.com/collections/Supplementary_material_from_Transformation_of_organic_matter_in_a_Barents_Sea_sediment_profile_coupled_geochemical_and_microbiological_processes_/5069817/1 unknown The Royal Society https://dx.doi.org/10.1098/rsta.2020.0223 https://dx.doi.org/10.6084/m9.figshare.c.5069817 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Environmental Chemistry Geochemistry FOS Earth and related environmental sciences Oceanography Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.5069817.v1 https://doi.org/10.1098/rsta.2020.0223 https://doi.org/10.6084/m9.figshare.c.5069817 2021-11-05T12:55:41Z Process-based, mechanistic investigations of organic matter transformation and diagenesis directly beneath the sediment–water interface (SWI) in Arctic continental shelves are vital as these regions are at greatest risk of future change. This is in part due to disruptions in benthic–pelagic coupling associated with ocean current change and sea ice retreat. Here, we focus on a high-resolution, multi-disciplinary set of measurements that illustrate how microbial processes involved in the degradation of organic matter are directly coupled with inorganic and organic geochemical sediment properties (measured and modelled) as well as the extent/depth of bioturbation. We find direct links between aerobic processes, reactive organic carbon and highest abundances of bacteria and archaea in the uppermost layer (0–4.5 cm depth) followed by dominance of microbes involved in nitrate/nitrite and iron/manganese reduction across the oxic-anoxic redox boundary (approx. 4.5–10.5 cm depth). Sulfate reducers dominate in the deeper (approx. 10.5–33 cm) anoxic sediments which is consistent with the modelled reactive transport framework. Importantly, organic matter reactivity as tracked by organic geochemical parameters ( n -alkanes, n -alkanoic acids, n -alkanols and sterols) changes most dramatically at and directly below the SWI together with sedimentology and biological activity but remained relatively unchanged across deeper changes in sedimentology.This article is part of the theme issue ‘The Changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems’. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Barents Sea |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Chemistry Geochemistry FOS Earth and related environmental sciences Oceanography |
spellingShingle |
Environmental Chemistry Geochemistry FOS Earth and related environmental sciences Oceanography Stevenson, Mark A. Faust, Johan C. Andrade, Luiza L. Freitas, Felipe S. Gray, Neil D. Tait, Karen Hendry, Katharine R. Hilton, Robert G. Henley, Sian F. Tessin, Allyson Leary, Peter Papadaki, Sonia Ailbe Ford März, Christian Abbott, Geoffrey D. Supplementary material from "Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes" |
topic_facet |
Environmental Chemistry Geochemistry FOS Earth and related environmental sciences Oceanography |
description |
Process-based, mechanistic investigations of organic matter transformation and diagenesis directly beneath the sediment–water interface (SWI) in Arctic continental shelves are vital as these regions are at greatest risk of future change. This is in part due to disruptions in benthic–pelagic coupling associated with ocean current change and sea ice retreat. Here, we focus on a high-resolution, multi-disciplinary set of measurements that illustrate how microbial processes involved in the degradation of organic matter are directly coupled with inorganic and organic geochemical sediment properties (measured and modelled) as well as the extent/depth of bioturbation. We find direct links between aerobic processes, reactive organic carbon and highest abundances of bacteria and archaea in the uppermost layer (0–4.5 cm depth) followed by dominance of microbes involved in nitrate/nitrite and iron/manganese reduction across the oxic-anoxic redox boundary (approx. 4.5–10.5 cm depth). Sulfate reducers dominate in the deeper (approx. 10.5–33 cm) anoxic sediments which is consistent with the modelled reactive transport framework. Importantly, organic matter reactivity as tracked by organic geochemical parameters ( n -alkanes, n -alkanoic acids, n -alkanols and sterols) changes most dramatically at and directly below the SWI together with sedimentology and biological activity but remained relatively unchanged across deeper changes in sedimentology.This article is part of the theme issue ‘The Changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems’. |
format |
Article in Journal/Newspaper |
author |
Stevenson, Mark A. Faust, Johan C. Andrade, Luiza L. Freitas, Felipe S. Gray, Neil D. Tait, Karen Hendry, Katharine R. Hilton, Robert G. Henley, Sian F. Tessin, Allyson Leary, Peter Papadaki, Sonia Ailbe Ford März, Christian Abbott, Geoffrey D. |
author_facet |
Stevenson, Mark A. Faust, Johan C. Andrade, Luiza L. Freitas, Felipe S. Gray, Neil D. Tait, Karen Hendry, Katharine R. Hilton, Robert G. Henley, Sian F. Tessin, Allyson Leary, Peter Papadaki, Sonia Ailbe Ford März, Christian Abbott, Geoffrey D. |
author_sort |
Stevenson, Mark A. |
title |
Supplementary material from "Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes" |
title_short |
Supplementary material from "Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes" |
title_full |
Supplementary material from "Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes" |
title_fullStr |
Supplementary material from "Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes" |
title_full_unstemmed |
Supplementary material from "Transformation of organic matter in a Barents Sea sediment profile: coupled geochemical and microbiological processes" |
title_sort |
supplementary material from "transformation of organic matter in a barents sea sediment profile: coupled geochemical and microbiological processes" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5069817.v1 https://rs.figshare.com/collections/Supplementary_material_from_Transformation_of_organic_matter_in_a_Barents_Sea_sediment_profile_coupled_geochemical_and_microbiological_processes_/5069817/1 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Ocean Barents Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Sea ice |
op_relation |
https://dx.doi.org/10.1098/rsta.2020.0223 https://dx.doi.org/10.6084/m9.figshare.c.5069817 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5069817.v1 https://doi.org/10.1098/rsta.2020.0223 https://doi.org/10.6084/m9.figshare.c.5069817 |
_version_ |
1766331430372114432 |