Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone
In the Southern Ocean, large-scale phytoplankton blooms occur in open water and the sea-ice zone (SIZ). These blooms have a range of fates including physical advection, downward carbon export, or grazing. Here, we determine the magnitude, timing and spatial trends of the biogeochemical (export) and...
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ftpubmed:oai:pubmedcentral.nih.gov:7305117 2023-05-15T18:17:41+02:00 Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone Moreau, Sébastien Boyd, Philip W. Strutton, Peter G. 2020-06-19 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305117/ http://www.ncbi.nlm.nih.gov/pubmed/32561737 https://doi.org/10.1038/s41467-020-16931-0 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305117/ http://www.ncbi.nlm.nih.gov/pubmed/32561737 http://dx.doi.org/10.1038/s41467-020-16931-0 © 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 Nat Commun Article Text 2020 ftpubmed https://doi.org/10.1038/s41467-020-16931-0 2020-06-28T00:27:05Z In the Southern Ocean, large-scale phytoplankton blooms occur in open water and the sea-ice zone (SIZ). These blooms have a range of fates including physical advection, downward carbon export, or grazing. Here, we determine the magnitude, timing and spatial trends of the biogeochemical (export) and ecological (foodwebs) fates of phytoplankton, based on seven BGC-Argo floats spanning three years across the SIZ. We calculate loss terms using the production of chlorophyll—based on nitrate depletion—compared with measured chlorophyll. Export losses are estimated using conspicuous chlorophyll pulses at depth. By subtracting export losses, we calculate grazing-mediated losses. Herbivory accounts for ~90% of the annually-averaged losses (169 mg C m(−2) d(−1)), and phytodetritus POC export comprises ~10%. Furthermore, export and grazing losses each exhibit distinctive seasonality captured by all floats spanning 60°S to 69°S. These similar trends reveal widespread patterns in phytoplankton fate throughout the Southern Ocean SIZ. Text Sea ice Southern Ocean PubMed Central (PMC) Southern Ocean Nature Communications 11 1 |
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Article Moreau, Sébastien Boyd, Philip W. Strutton, Peter G. Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone |
topic_facet |
Article |
description |
In the Southern Ocean, large-scale phytoplankton blooms occur in open water and the sea-ice zone (SIZ). These blooms have a range of fates including physical advection, downward carbon export, or grazing. Here, we determine the magnitude, timing and spatial trends of the biogeochemical (export) and ecological (foodwebs) fates of phytoplankton, based on seven BGC-Argo floats spanning three years across the SIZ. We calculate loss terms using the production of chlorophyll—based on nitrate depletion—compared with measured chlorophyll. Export losses are estimated using conspicuous chlorophyll pulses at depth. By subtracting export losses, we calculate grazing-mediated losses. Herbivory accounts for ~90% of the annually-averaged losses (169 mg C m(−2) d(−1)), and phytodetritus POC export comprises ~10%. Furthermore, export and grazing losses each exhibit distinctive seasonality captured by all floats spanning 60°S to 69°S. These similar trends reveal widespread patterns in phytoplankton fate throughout the Southern Ocean SIZ. |
format |
Text |
author |
Moreau, Sébastien Boyd, Philip W. Strutton, Peter G. |
author_facet |
Moreau, Sébastien Boyd, Philip W. Strutton, Peter G. |
author_sort |
Moreau, Sébastien |
title |
Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone |
title_short |
Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone |
title_full |
Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone |
title_fullStr |
Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone |
title_full_unstemmed |
Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone |
title_sort |
remote assessment of the fate of phytoplankton in the southern ocean sea-ice zone |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305117/ http://www.ncbi.nlm.nih.gov/pubmed/32561737 https://doi.org/10.1038/s41467-020-16931-0 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Sea ice Southern Ocean |
genre_facet |
Sea ice Southern Ocean |
op_source |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305117/ http://www.ncbi.nlm.nih.gov/pubmed/32561737 http://dx.doi.org/10.1038/s41467-020-16931-0 |
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/s41467-020-16931-0 |
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Nature Communications |
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11 |
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1 |
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