Electronic Supplementary Material for Freitas et al. '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 to ecosystem functioning. This key region hostsa large fraction of Arctic primary productivity. However, p...
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ftroysocietyfig:oai:figshare.com:article/12597329 2023-05-15T14:51:07+02:00 Electronic Supplementary Material for Freitas et al. 'Benthic-pelagic coupling in the Barents Sea: an integrated data-model framework'. Felipe S. Freitas Katharine R. Hendry Sian F. Henley Johan C. Faust Allyson C. Tessin Mark A. Stevenson Geoffrey D. Abbott Christian März Sandra Arndt 2020-07-09T15:45:55Z https://doi.org/10.6084/m9.figshare.12597329.v2 https://figshare.com/articles/journal_contribution/Electronic_Supplementary_Material_for_Freitas_et_al_Benthic-pelagic_coupling_in_the_Barents_Sea_an_integrated_data-model_framework_/12597329 unknown doi:10.6084/m9.figshare.12597329.v2 https://figshare.com/articles/journal_contribution/Electronic_Supplementary_Material_for_Freitas_et_al_Benthic-pelagic_coupling_in_the_Barents_Sea_an_integrated_data-model_framework_/12597329 CC BY 4.0 CC-BY Geochemistry Oceanography Simulation and Modelling organic matter reactivity degradation rates nutrient fluxes reaction-transport model Arctic Ocean sediments seafloor continental shelf Text Journal contribution 2020 ftroysocietyfig https://doi.org/10.6084/m9.figshare.12597329.v2 2022-01-01T19:24:47Z 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 to ecosystem functioning. This key region hostsa 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 (OM) processing and disentangle its drivers. Sedimentary OM reactivity patterns show no gradients relative to sea ice extent, being mostly driven by seafloor spatial heterogeneity. Burial of high reactivity, marine-derived OM is evident at sites influenced by Atlantic Water (AW), 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 AW-dominated shelf might represent the future scenario for the entire Barents Sea. Our results represent a baseline systematic understanding of seafloor geochemistry, allowing us to anticipate changes that could be imposed on the pan-Arctic in the future if climate-driven perturbations persist.This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems’. Other Non-Article Part of Journal/Newspaper Arctic Arctic Ocean Barents Sea Sea ice The Royal Society: Figshare Arctic Arctic Ocean Barents Sea |
institution |
Open Polar |
collection |
The Royal Society: Figshare |
op_collection_id |
ftroysocietyfig |
language |
unknown |
topic |
Geochemistry Oceanography Simulation and Modelling organic matter reactivity degradation rates nutrient fluxes reaction-transport model Arctic Ocean sediments seafloor continental shelf |
spellingShingle |
Geochemistry Oceanography Simulation and Modelling organic matter reactivity degradation rates nutrient fluxes reaction-transport model Arctic Ocean sediments seafloor continental shelf Felipe S. Freitas Katharine R. Hendry Sian F. Henley Johan C. Faust Allyson C. Tessin Mark A. Stevenson Geoffrey D. Abbott Christian März Sandra Arndt Electronic Supplementary Material for Freitas et al. 'Benthic-pelagic coupling in the Barents Sea: an integrated data-model framework'. |
topic_facet |
Geochemistry Oceanography Simulation and Modelling organic matter reactivity degradation rates nutrient fluxes reaction-transport model Arctic Ocean sediments 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 to ecosystem functioning. This key region hostsa 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 (OM) processing and disentangle its drivers. Sedimentary OM reactivity patterns show no gradients relative to sea ice extent, being mostly driven by seafloor spatial heterogeneity. Burial of high reactivity, marine-derived OM is evident at sites influenced by Atlantic Water (AW), 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 AW-dominated shelf might represent the future scenario for the entire Barents Sea. Our results represent a baseline systematic understanding of seafloor geochemistry, allowing us to anticipate changes that could be imposed on the pan-Arctic in the future if climate-driven perturbations persist.This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems’. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Felipe S. Freitas Katharine R. Hendry Sian F. Henley Johan C. Faust Allyson C. Tessin Mark A. Stevenson Geoffrey D. Abbott Christian März Sandra Arndt |
author_facet |
Felipe S. Freitas Katharine R. Hendry Sian F. Henley Johan C. Faust Allyson C. Tessin Mark A. Stevenson Geoffrey D. Abbott Christian März Sandra Arndt |
author_sort |
Felipe S. Freitas |
title |
Electronic Supplementary Material for Freitas et al. 'Benthic-pelagic coupling in the Barents Sea: an integrated data-model framework'. |
title_short |
Electronic Supplementary Material for Freitas et al. 'Benthic-pelagic coupling in the Barents Sea: an integrated data-model framework'. |
title_full |
Electronic Supplementary Material for Freitas et al. 'Benthic-pelagic coupling in the Barents Sea: an integrated data-model framework'. |
title_fullStr |
Electronic Supplementary Material for Freitas et al. 'Benthic-pelagic coupling in the Barents Sea: an integrated data-model framework'. |
title_full_unstemmed |
Electronic Supplementary Material for Freitas et al. 'Benthic-pelagic coupling in the Barents Sea: an integrated data-model framework'. |
title_sort |
electronic supplementary material for freitas et al. 'benthic-pelagic coupling in the barents sea: an integrated data-model framework'. |
publishDate |
2020 |
url |
https://doi.org/10.6084/m9.figshare.12597329.v2 https://figshare.com/articles/journal_contribution/Electronic_Supplementary_Material_for_Freitas_et_al_Benthic-pelagic_coupling_in_the_Barents_Sea_an_integrated_data-model_framework_/12597329 |
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 |
doi:10.6084/m9.figshare.12597329.v2 https://figshare.com/articles/journal_contribution/Electronic_Supplementary_Material_for_Freitas_et_al_Benthic-pelagic_coupling_in_the_Barents_Sea_an_integrated_data-model_framework_/12597329 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.12597329.v2 |
_version_ |
1766322173784358912 |