Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adelie Land, East Antarctica
Diatoms account for a large proportion of primary productivity in Antarctic coastal and continental shelf zones. Diatoms, which have been used for a long time to infer past sea surface conditions in the Southern Ocean, have recently been associated with diatom-specific biomarkers (highly branched is...
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ftarchimer:oai:archimer.ifremer.fr:53279 2023-05-15T13:04:10+02:00 Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adelie Land, East Antarctica Campagne, Philippine Crosta, Xavier Schmidt, Sabine Houssais, Marie Noelle Ther, Olivier Masse, Guillaume 2016 application/pdf https://archimer.ifremer.fr/doc/00421/53279/54324.pdf https://archimer.ifremer.fr/doc/00421/53279/54325.pdf https://doi.org/10.5194/bg-13-4205-2016 https://archimer.ifremer.fr/doc/00421/53279/ eng eng Copernicus Gesellschaft Mbh info:eu-repo/grantAgreement/EC/FP7/243908/EU//PAST4FUTURE https://archimer.ifremer.fr/doc/00421/53279/54324.pdf https://archimer.ifremer.fr/doc/00421/53279/54325.pdf doi:10.5194/bg-13-4205-2016 https://archimer.ifremer.fr/doc/00421/53279/ Author(s) 2016. This work is distributed under the Creative Commons Attribution 3.0 License. info:eu-repo/semantics/openAccess restricted use CC-BY Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2016 , Vol. 13 , N. 14 , P. 4205-4218 text Publication info:eu-repo/semantics/article 2016 ftarchimer https://doi.org/10.5194/bg-13-4205-2016 2021-09-23T20:30:28Z Diatoms account for a large proportion of primary productivity in Antarctic coastal and continental shelf zones. Diatoms, which have been used for a long time to infer past sea surface conditions in the Southern Ocean, have recently been associated with diatom-specific biomarkers (highly branched isoprenoids, HBI). Our study is one of the few sedimentary research projects on diatom ecology and associated biomarkers in the Antarctic seasonal sea ice zone. To date, the Adelie Land region has received little attention, despite evidence for the presence of high accumulation of laminated sediment, allowing for finer climate reconstructions and sedimentary process studies. Here we provide a sequence of seasonally to annually laminated diatomaceous sediment from a 72.5 cm interface core retrieved on the continental shelf off Adelie Land, covering the 1970-2010 CE period. Investigations through statistical analyses of diatom communities, diatom-specific biomarkers and major element abundances document the relationships between these proxies at an unprecedented resolution. Additionally, comparison of sedimentary records to meteorological data monitored by automatic weather station and satellite derived sea ice concentrations help to refine the relationships between our proxies and environmental conditions over the last decades. Our results suggest a coupled interaction of the atmospheric and sea surface variability on sea ice seasonality, which acts as the proximal forcing of siliceous productivity at that scale. Article in Journal/Newspaper Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic East Antarctica Southern Ocean The Antarctic Biogeosciences 13 14 4205 4218 |
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 |
description |
Diatoms account for a large proportion of primary productivity in Antarctic coastal and continental shelf zones. Diatoms, which have been used for a long time to infer past sea surface conditions in the Southern Ocean, have recently been associated with diatom-specific biomarkers (highly branched isoprenoids, HBI). Our study is one of the few sedimentary research projects on diatom ecology and associated biomarkers in the Antarctic seasonal sea ice zone. To date, the Adelie Land region has received little attention, despite evidence for the presence of high accumulation of laminated sediment, allowing for finer climate reconstructions and sedimentary process studies. Here we provide a sequence of seasonally to annually laminated diatomaceous sediment from a 72.5 cm interface core retrieved on the continental shelf off Adelie Land, covering the 1970-2010 CE period. Investigations through statistical analyses of diatom communities, diatom-specific biomarkers and major element abundances document the relationships between these proxies at an unprecedented resolution. Additionally, comparison of sedimentary records to meteorological data monitored by automatic weather station and satellite derived sea ice concentrations help to refine the relationships between our proxies and environmental conditions over the last decades. Our results suggest a coupled interaction of the atmospheric and sea surface variability on sea ice seasonality, which acts as the proximal forcing of siliceous productivity at that scale. |
format |
Article in Journal/Newspaper |
author |
Campagne, Philippine Crosta, Xavier Schmidt, Sabine Houssais, Marie Noelle Ther, Olivier Masse, Guillaume |
spellingShingle |
Campagne, Philippine Crosta, Xavier Schmidt, Sabine Houssais, Marie Noelle Ther, Olivier Masse, Guillaume Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adelie Land, East Antarctica |
author_facet |
Campagne, Philippine Crosta, Xavier Schmidt, Sabine Houssais, Marie Noelle Ther, Olivier Masse, Guillaume |
author_sort |
Campagne, Philippine |
title |
Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adelie Land, East Antarctica |
title_short |
Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adelie Land, East Antarctica |
title_full |
Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adelie Land, East Antarctica |
title_fullStr |
Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adelie Land, East Antarctica |
title_full_unstemmed |
Sedimentary response to sea ice and atmospheric variability over the instrumental period off Adelie Land, East Antarctica |
title_sort |
sedimentary response to sea ice and atmospheric variability over the instrumental period off adelie land, east antarctica |
publisher |
Copernicus Gesellschaft Mbh |
publishDate |
2016 |
url |
https://archimer.ifremer.fr/doc/00421/53279/54324.pdf https://archimer.ifremer.fr/doc/00421/53279/54325.pdf https://doi.org/10.5194/bg-13-4205-2016 https://archimer.ifremer.fr/doc/00421/53279/ |
geographic |
Antarctic East Antarctica Southern Ocean The Antarctic |
geographic_facet |
Antarctic East Antarctica Southern Ocean The Antarctic |
genre |
Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice Southern Ocean |
genre_facet |
Adelie Land Antarc* Antarctic Antarctica East Antarctica Sea ice Southern Ocean |
op_source |
Biogeosciences (1726-4170) (Copernicus Gesellschaft Mbh), 2016 , Vol. 13 , N. 14 , P. 4205-4218 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/243908/EU//PAST4FUTURE https://archimer.ifremer.fr/doc/00421/53279/54324.pdf https://archimer.ifremer.fr/doc/00421/53279/54325.pdf doi:10.5194/bg-13-4205-2016 https://archimer.ifremer.fr/doc/00421/53279/ |
op_rights |
Author(s) 2016. This work is distributed under the Creative Commons Attribution 3.0 License. info:eu-repo/semantics/openAccess restricted use |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-13-4205-2016 |
container_title |
Biogeosciences |
container_volume |
13 |
container_issue |
14 |
container_start_page |
4205 |
op_container_end_page |
4218 |
_version_ |
1766353600836009984 |