Holocene productivity changes off Adelie Land (East Antarctica)
This study presents the first high-resolution multiproxy investigation of primary productivity ( PP) during the Holocene from the Antarctic continental margins. Micropaleontological and geochemical data from the sediment core MD03-2601, associated to sea ice model outputs, give unprecedented insight...
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Language: | English |
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Amer Geophysical Union
2009
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ftarchimer:oai:archimer.ifremer.fr:32930 2023-05-15T13:04:10+02:00 Holocene productivity changes off Adelie Land (East Antarctica) Denis, Delphine Crosta, Xavier Schmidt, Sabine Carson, Damien S. Ganeshram, Raja S. Renssen, Hans Crespin, Julien Ther, Olivier Billy, Isabelle Giraudeau, Jacques 2009-08 application/pdf https://archimer.ifremer.fr/doc/00218/32930/31442.pdf https://doi.org/10.1029/2008PA001689 https://archimer.ifremer.fr/doc/00218/32930/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00218/32930/31442.pdf doi:10.1029/2008PA001689 https://archimer.ifremer.fr/doc/00218/32930/ Copyright 2009 by the American Geophysical Union. info:eu-repo/semantics/openAccess restricted use Paleoceanography (0883-8305) (Amer Geophysical Union), 2009-08 , Vol. 24 , N. PA3207 , P. 1-12 text Publication info:eu-repo/semantics/article 2009 ftarchimer https://doi.org/10.1029/2008PA001689 2021-09-23T20:25:01Z This study presents the first high-resolution multiproxy investigation of primary productivity ( PP) during the Holocene from the Antarctic continental margins. Micropaleontological and geochemical data from the sediment core MD03-2601, associated to sea ice model outputs, give unprecedented insights into the biological pump of the Antarctic coastal area off Adelie Land in response to climatic changes. Plurimillennial and millennial changes of PP are observed in the study area in response to changes in nutrient availability, stratification, and growing season duration, which are linked to sea ice, upwelling, wind, and glacier dynamics. The precessional cycle seems to be responsible in the PP long-term variations, while forcing factors involved at the millennial timescale remain more enigmatic. Our results emphasize enhanced biological pump during warmer and windier Holocene phases because of a longer growing season and greater nutrient input. Antarctic coastal and continental shelf zones may therefore represent a more intense carbon sink in the future. Article in Journal/Newspaper Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic East Antarctica The Antarctic Paleoceanography 24 3 |
institution |
Open Polar |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
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ftarchimer |
language |
English |
description |
This study presents the first high-resolution multiproxy investigation of primary productivity ( PP) during the Holocene from the Antarctic continental margins. Micropaleontological and geochemical data from the sediment core MD03-2601, associated to sea ice model outputs, give unprecedented insights into the biological pump of the Antarctic coastal area off Adelie Land in response to climatic changes. Plurimillennial and millennial changes of PP are observed in the study area in response to changes in nutrient availability, stratification, and growing season duration, which are linked to sea ice, upwelling, wind, and glacier dynamics. The precessional cycle seems to be responsible in the PP long-term variations, while forcing factors involved at the millennial timescale remain more enigmatic. Our results emphasize enhanced biological pump during warmer and windier Holocene phases because of a longer growing season and greater nutrient input. Antarctic coastal and continental shelf zones may therefore represent a more intense carbon sink in the future. |
format |
Article in Journal/Newspaper |
author |
Denis, Delphine Crosta, Xavier Schmidt, Sabine Carson, Damien S. Ganeshram, Raja S. Renssen, Hans Crespin, Julien Ther, Olivier Billy, Isabelle Giraudeau, Jacques |
spellingShingle |
Denis, Delphine Crosta, Xavier Schmidt, Sabine Carson, Damien S. Ganeshram, Raja S. Renssen, Hans Crespin, Julien Ther, Olivier Billy, Isabelle Giraudeau, Jacques Holocene productivity changes off Adelie Land (East Antarctica) |
author_facet |
Denis, Delphine Crosta, Xavier Schmidt, Sabine Carson, Damien S. Ganeshram, Raja S. Renssen, Hans Crespin, Julien Ther, Olivier Billy, Isabelle Giraudeau, Jacques |
author_sort |
Denis, Delphine |
title |
Holocene productivity changes off Adelie Land (East Antarctica) |
title_short |
Holocene productivity changes off Adelie Land (East Antarctica) |
title_full |
Holocene productivity changes off Adelie Land (East Antarctica) |
title_fullStr |
Holocene productivity changes off Adelie Land (East Antarctica) |
title_full_unstemmed |
Holocene productivity changes off Adelie Land (East Antarctica) |
title_sort |
holocene productivity changes off adelie land (east antarctica) |
publisher |
Amer Geophysical Union |
publishDate |
2009 |
url |
https://archimer.ifremer.fr/doc/00218/32930/31442.pdf https://doi.org/10.1029/2008PA001689 https://archimer.ifremer.fr/doc/00218/32930/ |
geographic |
Antarctic East Antarctica The Antarctic |
geographic_facet |
Antarctic East Antarctica The Antarctic |
genre |
Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice |
genre_facet |
Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice |
op_source |
Paleoceanography (0883-8305) (Amer Geophysical Union), 2009-08 , Vol. 24 , N. PA3207 , P. 1-12 |
op_relation |
https://archimer.ifremer.fr/doc/00218/32930/31442.pdf doi:10.1029/2008PA001689 https://archimer.ifremer.fr/doc/00218/32930/ |
op_rights |
Copyright 2009 by the American Geophysical Union. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/2008PA001689 |
container_title |
Paleoceanography |
container_volume |
24 |
container_issue |
3 |
_version_ |
1766353659430436864 |