Effects of phytoplankton community composition and productivity on sea surface pCO(2) variations in the Southern Ocean
The Southern Ocean is a vast net sink for atmospheric carbon dioxide (CO2), with marine phytoplankton playing a crucial role in CO2 fixation. We assessed how changes in the dominant phytoplankton community and net primary productivity (NPP) affected variations in the partial pressure of CO2 in surfa...
Published in: | Journal of Physical Oceanography |
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Pergamon-elsevier Science Ltd
2020
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Online Access: | https://archimer.ifremer.fr/doc/00676/78836/81084.pdf https://archimer.ifremer.fr/doc/00676/78836/81085.pdf https://archimer.ifremer.fr/doc/00676/78836/81086.pdf https://archimer.ifremer.fr/doc/00676/78836/81087.pdf https://archimer.ifremer.fr/doc/00676/78836/81088.pdf https://archimer.ifremer.fr/doc/00676/78836/81089.pdf https://archimer.ifremer.fr/doc/00676/78836/81090.pdf https://archimer.ifremer.fr/doc/00676/78836/81091.docx https://doi.org/10.1016/j.dsr.2020.103263 https://archimer.ifremer.fr/doc/00676/78836/ |
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ftarchimer:oai:archimer.ifremer.fr:78836 2023-05-15T13:47:37+02:00 Effects of phytoplankton community composition and productivity on sea surface pCO(2) variations in the Southern Ocean Takao, Shintaro Nakaoka, Shin-ichiro Hashihama, Fuminori Shimada, Keishi Yoshikawa-inoue, Hisayuki Hirawake, Toru Kanda, Jota Hashida, Gen Suzuki, Koji 2020-06 application/pdf https://archimer.ifremer.fr/doc/00676/78836/81084.pdf https://archimer.ifremer.fr/doc/00676/78836/81085.pdf https://archimer.ifremer.fr/doc/00676/78836/81086.pdf https://archimer.ifremer.fr/doc/00676/78836/81087.pdf https://archimer.ifremer.fr/doc/00676/78836/81088.pdf https://archimer.ifremer.fr/doc/00676/78836/81089.pdf https://archimer.ifremer.fr/doc/00676/78836/81090.pdf https://archimer.ifremer.fr/doc/00676/78836/81091.docx https://doi.org/10.1016/j.dsr.2020.103263 https://archimer.ifremer.fr/doc/00676/78836/ eng eng Pergamon-elsevier Science Ltd https://archimer.ifremer.fr/doc/00676/78836/81084.pdf https://archimer.ifremer.fr/doc/00676/78836/81085.pdf https://archimer.ifremer.fr/doc/00676/78836/81086.pdf https://archimer.ifremer.fr/doc/00676/78836/81087.pdf https://archimer.ifremer.fr/doc/00676/78836/81088.pdf https://archimer.ifremer.fr/doc/00676/78836/81089.pdf https://archimer.ifremer.fr/doc/00676/78836/81090.pdf https://archimer.ifremer.fr/doc/00676/78836/81091.docx doi:10.1016/j.dsr.2020.103263 https://archimer.ifremer.fr/doc/00676/78836/ info:eu-repo/semantics/openAccess restricted use Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2020-06 , Vol. 160 , P. 103263 (12p.) Phytoplankton community composition Diatoms Southern Ocean Net primary productivity Carbon dioxide text Publication info:eu-repo/semantics/article 2020 ftarchimer https://doi.org/10.1016/j.dsr.2020.103263 2021-09-23T20:36:55Z The Southern Ocean is a vast net sink for atmospheric carbon dioxide (CO2), with marine phytoplankton playing a crucial role in CO2 fixation. We assessed how changes in the dominant phytoplankton community and net primary productivity (NPP) affected variations in the partial pressure of CO2 in surface water (pCO(2)(sw)) in the Indian sector of the Southern Ocean during austral summer. pCO2sw was negatively correlated with total phytoplankton and diatom abundances, as estimated from pigment signatures, in the zone south of the Antarctic Circumpolar Current; however, pCO(2)(sw) was not correlated with haptophyte abundance. Additionally, a stronger correlation was found between pCO(2)(sw) and total phytoplankton NPP than between chlorophyll a concentration and pCO(2)(sw). We reconstructed pCO(2)(sw) at inter-annual scale using satellite data and assessed the inter-annual variability of air-sea CO2 flux. Over the period from 1997 to 2007, the integrated CO2 fluxes over the study region showed very large variations from a small source to a strong sink. Variations in the integrated CO2 fluxes were also correlated with changes in satellite-derived phytoplankton community in the Indian sector of the Southern Ocean and changes in the dominant phytoplankton community may control CO2 dynamics in the marginal ice zone. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Austral Indian Southern Ocean The Antarctic Journal of Physical Oceanography 37 1 31 49 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Phytoplankton community composition Diatoms Southern Ocean Net primary productivity Carbon dioxide |
spellingShingle |
Phytoplankton community composition Diatoms Southern Ocean Net primary productivity Carbon dioxide Takao, Shintaro Nakaoka, Shin-ichiro Hashihama, Fuminori Shimada, Keishi Yoshikawa-inoue, Hisayuki Hirawake, Toru Kanda, Jota Hashida, Gen Suzuki, Koji Effects of phytoplankton community composition and productivity on sea surface pCO(2) variations in the Southern Ocean |
topic_facet |
Phytoplankton community composition Diatoms Southern Ocean Net primary productivity Carbon dioxide |
description |
The Southern Ocean is a vast net sink for atmospheric carbon dioxide (CO2), with marine phytoplankton playing a crucial role in CO2 fixation. We assessed how changes in the dominant phytoplankton community and net primary productivity (NPP) affected variations in the partial pressure of CO2 in surface water (pCO(2)(sw)) in the Indian sector of the Southern Ocean during austral summer. pCO2sw was negatively correlated with total phytoplankton and diatom abundances, as estimated from pigment signatures, in the zone south of the Antarctic Circumpolar Current; however, pCO(2)(sw) was not correlated with haptophyte abundance. Additionally, a stronger correlation was found between pCO(2)(sw) and total phytoplankton NPP than between chlorophyll a concentration and pCO(2)(sw). We reconstructed pCO(2)(sw) at inter-annual scale using satellite data and assessed the inter-annual variability of air-sea CO2 flux. Over the period from 1997 to 2007, the integrated CO2 fluxes over the study region showed very large variations from a small source to a strong sink. Variations in the integrated CO2 fluxes were also correlated with changes in satellite-derived phytoplankton community in the Indian sector of the Southern Ocean and changes in the dominant phytoplankton community may control CO2 dynamics in the marginal ice zone. |
format |
Article in Journal/Newspaper |
author |
Takao, Shintaro Nakaoka, Shin-ichiro Hashihama, Fuminori Shimada, Keishi Yoshikawa-inoue, Hisayuki Hirawake, Toru Kanda, Jota Hashida, Gen Suzuki, Koji |
author_facet |
Takao, Shintaro Nakaoka, Shin-ichiro Hashihama, Fuminori Shimada, Keishi Yoshikawa-inoue, Hisayuki Hirawake, Toru Kanda, Jota Hashida, Gen Suzuki, Koji |
author_sort |
Takao, Shintaro |
title |
Effects of phytoplankton community composition and productivity on sea surface pCO(2) variations in the Southern Ocean |
title_short |
Effects of phytoplankton community composition and productivity on sea surface pCO(2) variations in the Southern Ocean |
title_full |
Effects of phytoplankton community composition and productivity on sea surface pCO(2) variations in the Southern Ocean |
title_fullStr |
Effects of phytoplankton community composition and productivity on sea surface pCO(2) variations in the Southern Ocean |
title_full_unstemmed |
Effects of phytoplankton community composition and productivity on sea surface pCO(2) variations in the Southern Ocean |
title_sort |
effects of phytoplankton community composition and productivity on sea surface pco(2) variations in the southern ocean |
publisher |
Pergamon-elsevier Science Ltd |
publishDate |
2020 |
url |
https://archimer.ifremer.fr/doc/00676/78836/81084.pdf https://archimer.ifremer.fr/doc/00676/78836/81085.pdf https://archimer.ifremer.fr/doc/00676/78836/81086.pdf https://archimer.ifremer.fr/doc/00676/78836/81087.pdf https://archimer.ifremer.fr/doc/00676/78836/81088.pdf https://archimer.ifremer.fr/doc/00676/78836/81089.pdf https://archimer.ifremer.fr/doc/00676/78836/81090.pdf https://archimer.ifremer.fr/doc/00676/78836/81091.docx https://doi.org/10.1016/j.dsr.2020.103263 https://archimer.ifremer.fr/doc/00676/78836/ |
geographic |
Antarctic Austral Indian Southern Ocean The Antarctic |
geographic_facet |
Antarctic Austral Indian Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2020-06 , Vol. 160 , P. 103263 (12p.) |
op_relation |
https://archimer.ifremer.fr/doc/00676/78836/81084.pdf https://archimer.ifremer.fr/doc/00676/78836/81085.pdf https://archimer.ifremer.fr/doc/00676/78836/81086.pdf https://archimer.ifremer.fr/doc/00676/78836/81087.pdf https://archimer.ifremer.fr/doc/00676/78836/81088.pdf https://archimer.ifremer.fr/doc/00676/78836/81089.pdf https://archimer.ifremer.fr/doc/00676/78836/81090.pdf https://archimer.ifremer.fr/doc/00676/78836/81091.docx doi:10.1016/j.dsr.2020.103263 https://archimer.ifremer.fr/doc/00676/78836/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.dsr.2020.103263 |
container_title |
Journal of Physical Oceanography |
container_volume |
37 |
container_issue |
1 |
container_start_page |
31 |
op_container_end_page |
49 |
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