Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone
Abstract 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 (exp...
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2020
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Online Access: | http://dx.doi.org/10.1038/s41467-020-16931-0 http://www.nature.com/articles/s41467-020-16931-0.pdf http://www.nature.com/articles/s41467-020-16931-0 |
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crspringernat:10.1038/s41467-020-16931-0 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 http://dx.doi.org/10.1038/s41467-020-16931-0 http://www.nature.com/articles/s41467-020-16931-0.pdf http://www.nature.com/articles/s41467-020-16931-0 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 11, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2020 crspringernat https://doi.org/10.1038/s41467-020-16931-0 2022-01-04T09:53:55Z Abstract 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. Article in Journal/Newspaper Sea ice Southern Ocean Springer Nature (via Crossref) Southern Ocean Nature Communications 11 1 |
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Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
spellingShingle |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry Moreau, Sébastien Boyd, Philip W. Strutton, Peter G. Remote assessment of the fate of phytoplankton in the Southern Ocean sea-ice zone |
topic_facet |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract 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 |
Article in Journal/Newspaper |
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 |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41467-020-16931-0 http://www.nature.com/articles/s41467-020-16931-0.pdf http://www.nature.com/articles/s41467-020-16931-0 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Sea ice Southern Ocean |
genre_facet |
Sea ice Southern Ocean |
op_source |
Nature Communications volume 11, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-16931-0 |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
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1766192475369635840 |