Benthic-pelagic coupling in the Barents Sea:an integrated data-model framework
The Barents Sea is experiencing long-term climate-driven changes, e.g. modification in oceanographic conditions and extensive sea ice loss, which can lead to large, yet unquantified disruptions of ecosystem functioning. This key region hosts large fraction of Arctic primary productivity. However, pr...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://hdl.handle.net/1983/a01c6941-35a3-4d6c-bbd0-d2b7404e7953 https://research-information.bris.ac.uk/en/publications/a01c6941-35a3-4d6c-bbd0-d2b7404e7953 https://doi.org/10.1098/rsta.2019.0359 https://research-information.bris.ac.uk/ws/files/251599460/rsta.2019.0359.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/a01c6941-35a3-4d6c-bbd0-d2b7404e7953 2024-02-04T09:57:41+01:00 Benthic-pelagic coupling in the Barents Sea:an integrated data-model framework Freitas, Felipe S Hendry, Katharine R Henley, Sian F Faust, Johan C Tessin, Allyson C Stevenson, Mark A Abbott, Geoffrey D März, Christian Arndt, Sandra 2020-10-02 application/pdf https://hdl.handle.net/1983/a01c6941-35a3-4d6c-bbd0-d2b7404e7953 https://research-information.bris.ac.uk/en/publications/a01c6941-35a3-4d6c-bbd0-d2b7404e7953 https://doi.org/10.1098/rsta.2019.0359 https://research-information.bris.ac.uk/ws/files/251599460/rsta.2019.0359.pdf eng eng info:eu-repo/semantics/openAccess Freitas , F S , Hendry , K R , Henley , S F , Faust , J C , Tessin , A C , Stevenson , M A , Abbott , G D , März , C & Arndt , S 2020 , ' Benthic-pelagic coupling in the Barents Sea : an integrated data-model framework ' , Philosophical Transactions of the Royal Society A: Physical and Engineering Sciences , vol. 378 , no. 2181 , 20190359 . https://doi.org/10.1098/rsta.2019.0359 organic matter reactivity degradation rates nutrient fluxes reaction-transport model Arctic Ocean sediment seafloor continental shelf article 2020 ftubristolcris https://doi.org/10.1098/rsta.2019.0359 2024-01-11T23:44:09Z The Barents Sea is experiencing long-term climate-driven changes, e.g. modification in oceanographic conditions and extensive sea ice loss, which can lead to large, yet unquantified disruptions of ecosystem functioning. This key region hosts large fraction of Arctic primary productivity. However, processes governing benthic and pelagic coupling are not mechanistically understood, limiting our ability to predict the impacts of future perturbations. We combine field observations with a Reaction-Transport Model approach to quantify organic matter processing and disentangle its drivers. Sedimentary organic matter reactivity patterns show no gradients relative to sea ice extent, being mostly driven by seafloor spatial heterogeneity. Burial of high reactivity, marine derived organic matter is evident at sites influenced by Atlantic Water, whereas low reactivity material is linked to terrestrial inputs on the central shelf. Degradation rates are mainly driven by aerobic respiration (40–75%), being greater at sites where highly reactive material is buried. Similarly, ammonium and phosphate fluxes are greater at those sites. The present-day Atlantic Water dominated shelf might represent the future scenario for the entire Barents Sea. Our results represent a baseline systematic understanding of seafloor geochemistry, allowing anticipating changes that could be imposed to the pan-Arctic in the future if climate14 driven perturbations persist. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Sea ice University of Bristol: Bristol Research Arctic Arctic Ocean Barents Sea Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378 2181 20190359 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
organic matter reactivity degradation rates nutrient fluxes reaction-transport model Arctic Ocean sediment seafloor continental shelf |
spellingShingle |
organic matter reactivity degradation rates nutrient fluxes reaction-transport model Arctic Ocean sediment seafloor continental shelf Freitas, Felipe S Hendry, Katharine R Henley, Sian F Faust, Johan C Tessin, Allyson C Stevenson, Mark A Abbott, Geoffrey D März, Christian Arndt, Sandra Benthic-pelagic coupling in the Barents Sea:an integrated data-model framework |
topic_facet |
organic matter reactivity degradation rates nutrient fluxes reaction-transport model Arctic Ocean sediment seafloor continental shelf |
description |
The Barents Sea is experiencing long-term climate-driven changes, e.g. modification in oceanographic conditions and extensive sea ice loss, which can lead to large, yet unquantified disruptions of ecosystem functioning. This key region hosts large fraction of Arctic primary productivity. However, processes governing benthic and pelagic coupling are not mechanistically understood, limiting our ability to predict the impacts of future perturbations. We combine field observations with a Reaction-Transport Model approach to quantify organic matter processing and disentangle its drivers. Sedimentary organic matter reactivity patterns show no gradients relative to sea ice extent, being mostly driven by seafloor spatial heterogeneity. Burial of high reactivity, marine derived organic matter is evident at sites influenced by Atlantic Water, whereas low reactivity material is linked to terrestrial inputs on the central shelf. Degradation rates are mainly driven by aerobic respiration (40–75%), being greater at sites where highly reactive material is buried. Similarly, ammonium and phosphate fluxes are greater at those sites. The present-day Atlantic Water dominated shelf might represent the future scenario for the entire Barents Sea. Our results represent a baseline systematic understanding of seafloor geochemistry, allowing anticipating changes that could be imposed to the pan-Arctic in the future if climate14 driven perturbations persist. |
format |
Article in Journal/Newspaper |
author |
Freitas, Felipe S Hendry, Katharine R Henley, Sian F Faust, Johan C Tessin, Allyson C Stevenson, Mark A Abbott, Geoffrey D März, Christian Arndt, Sandra |
author_facet |
Freitas, Felipe S Hendry, Katharine R Henley, Sian F Faust, Johan C Tessin, Allyson C Stevenson, Mark A Abbott, Geoffrey D März, Christian Arndt, Sandra |
author_sort |
Freitas, Felipe S |
title |
Benthic-pelagic coupling in the Barents Sea:an integrated data-model framework |
title_short |
Benthic-pelagic coupling in the Barents Sea:an integrated data-model framework |
title_full |
Benthic-pelagic coupling in the Barents Sea:an integrated data-model framework |
title_fullStr |
Benthic-pelagic coupling in the Barents Sea:an integrated data-model framework |
title_full_unstemmed |
Benthic-pelagic coupling in the Barents Sea:an integrated data-model framework |
title_sort |
benthic-pelagic coupling in the barents sea:an integrated data-model framework |
publishDate |
2020 |
url |
https://hdl.handle.net/1983/a01c6941-35a3-4d6c-bbd0-d2b7404e7953 https://research-information.bris.ac.uk/en/publications/a01c6941-35a3-4d6c-bbd0-d2b7404e7953 https://doi.org/10.1098/rsta.2019.0359 https://research-information.bris.ac.uk/ws/files/251599460/rsta.2019.0359.pdf |
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_source |
Freitas , F S , Hendry , K R , Henley , S F , Faust , J C , Tessin , A C , Stevenson , M A , Abbott , G D , März , C & Arndt , S 2020 , ' Benthic-pelagic coupling in the Barents Sea : an integrated data-model framework ' , Philosophical Transactions of the Royal Society A: Physical and Engineering Sciences , vol. 378 , no. 2181 , 20190359 . https://doi.org/10.1098/rsta.2019.0359 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1098/rsta.2019.0359 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
378 |
container_issue |
2181 |
container_start_page |
20190359 |
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1789962016446742528 |