Vertical eddy iron fluxes support primary production in the open Southern Ocean
The primary productivity of the Southern Ocean ecosystem is limited by iron availability. Away from benthic and aeolian sources, iron reaches phytoplankton primarily when iron-rich subsurface waters enter the euphotic zone. Here, eddy-resolving physical/biogeochemical simulations of a seasonally-for...
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ftpubmed:oai:pubmedcentral.nih.gov:7048949 2023-05-15T18:23:44+02:00 Vertical eddy iron fluxes support primary production in the open Southern Ocean Uchida, Takaya Balwada, Dhruv P. Abernathey, Ryan A. McKinley, Galen K. Smith, Shafer Lévy, Marina 2020-02-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7048949/ http://www.ncbi.nlm.nih.gov/pubmed/32111850 https://doi.org/10.1038/s41467-020-14955-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7048949/ http://www.ncbi.nlm.nih.gov/pubmed/32111850 http://dx.doi.org/10.1038/s41467-020-14955-0 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2020 ftpubmed https://doi.org/10.1038/s41467-020-14955-0 2020-03-08T01:46:46Z The primary productivity of the Southern Ocean ecosystem is limited by iron availability. Away from benthic and aeolian sources, iron reaches phytoplankton primarily when iron-rich subsurface waters enter the euphotic zone. Here, eddy-resolving physical/biogeochemical simulations of a seasonally-forced, open-Southern-Ocean ecosystem reveal that mesoscale and submesoscale isopycnal stirring effects a cross-mixed-layer-base transport of iron that sustains primary productivity. The eddy-driven iron supply and consequently productivity increase with model resolution. We show the eddy flux can be represented by specific well-tuned eddy parametrizations. Since eddy mixing rates are sensitive to wind forcing and large-scale hydrographic changes, these findings suggest a new mechanism for modulating the Southern Ocean biological pump on climate timescales. Text Southern Ocean PubMed Central (PMC) Southern Ocean Nature Communications 11 1 |
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Article Uchida, Takaya Balwada, Dhruv P. Abernathey, Ryan A. McKinley, Galen K. Smith, Shafer Lévy, Marina Vertical eddy iron fluxes support primary production in the open Southern Ocean |
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Article |
description |
The primary productivity of the Southern Ocean ecosystem is limited by iron availability. Away from benthic and aeolian sources, iron reaches phytoplankton primarily when iron-rich subsurface waters enter the euphotic zone. Here, eddy-resolving physical/biogeochemical simulations of a seasonally-forced, open-Southern-Ocean ecosystem reveal that mesoscale and submesoscale isopycnal stirring effects a cross-mixed-layer-base transport of iron that sustains primary productivity. The eddy-driven iron supply and consequently productivity increase with model resolution. We show the eddy flux can be represented by specific well-tuned eddy parametrizations. Since eddy mixing rates are sensitive to wind forcing and large-scale hydrographic changes, these findings suggest a new mechanism for modulating the Southern Ocean biological pump on climate timescales. |
format |
Text |
author |
Uchida, Takaya Balwada, Dhruv P. Abernathey, Ryan A. McKinley, Galen K. Smith, Shafer Lévy, Marina |
author_facet |
Uchida, Takaya Balwada, Dhruv P. Abernathey, Ryan A. McKinley, Galen K. Smith, Shafer Lévy, Marina |
author_sort |
Uchida, Takaya |
title |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_short |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_full |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_fullStr |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_full_unstemmed |
Vertical eddy iron fluxes support primary production in the open Southern Ocean |
title_sort |
vertical eddy iron fluxes support primary production in the open southern ocean |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7048949/ http://www.ncbi.nlm.nih.gov/pubmed/32111850 https://doi.org/10.1038/s41467-020-14955-0 |
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Southern Ocean |
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Southern Ocean |
genre |
Southern Ocean |
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Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7048949/ http://www.ncbi.nlm.nih.gov/pubmed/32111850 http://dx.doi.org/10.1038/s41467-020-14955-0 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-14955-0 |
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Nature Communications |
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11 |
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1 |
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1766203820707151872 |