Are Past Sea-Ice Reconstructions Based on Planktonic Foraminifera Realistic? Study of the Last 50 ka as a Test to Validate Reconstructed Paleohydrography Derived from Transfer Functions Applied to Their Fossil Assemblages
Since its existence, paleoceanography has relied on fossilized populations of planktonic foraminifera. Except for some extreme environments, this calcareous protist group composes most of the silty-to-sandy fraction of the marine sediments, i.e., the foraminiferal oozes, and its extraction is probab...
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MDPI AG
2021
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Online Access: | https://archimer.ifremer.fr/doc/00725/83687/88742.pdf https://archimer.ifremer.fr/doc/00725/83687/88743.zip https://doi.org/10.3390/geosciences11100409 https://archimer.ifremer.fr/doc/00725/83687/ |
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ftarchimer:oai:archimer.ifremer.fr:83687 2023-05-15T17:36:04+02:00 Are Past Sea-Ice Reconstructions Based on Planktonic Foraminifera Realistic? Study of the Last 50 ka as a Test to Validate Reconstructed Paleohydrography Derived from Transfer Functions Applied to Their Fossil Assemblages Eynaud, Frédérique Zaragosi, Sébastien Wary, Mélanie Woussen, Emilie Rossignol, Linda Voisin, Adrien 2021-10 application/pdf https://archimer.ifremer.fr/doc/00725/83687/88742.pdf https://archimer.ifremer.fr/doc/00725/83687/88743.zip https://doi.org/10.3390/geosciences11100409 https://archimer.ifremer.fr/doc/00725/83687/ eng eng MDPI AG info:eu-repo/grantAgreement/EC/FP7/243908/EU//PAST4FUTURE https://archimer.ifremer.fr/doc/00725/83687/88742.pdf https://archimer.ifremer.fr/doc/00725/83687/88743.zip doi:10.3390/geosciences11100409 https://archimer.ifremer.fr/doc/00725/83687/ info:eu-repo/semantics/openAccess restricted use Geosciences (2076-3263) (MDPI AG), 2021-10 , Vol. 11 , N. 10 , P. 409 (22p.) sea surface paleohydrographical reconstructions North Atlantic Ocean foraminifera text Publication info:eu-repo/semantics/article 2021 ftarchimer https://doi.org/10.3390/geosciences11100409 2022-02-01T23:50:44Z Since its existence, paleoceanography has relied on fossilized populations of planktonic foraminifera. Except for some extreme environments, this calcareous protist group composes most of the silty-to-sandy fraction of the marine sediments, i.e., the foraminiferal oozes, and its extraction is probably the simplest among the currently existing set of marine fossil proxies. This tool has provided significant insights in the building of knowledge on past climates based on marine archives, especially with the quantification of past hydrographical variables, which have been a turning point for major comprehensive studies and a step towards the essential junction of modelling and paleodata . In this article, using the modern analog technique and a database compiling modern analogs (n = 1007), we test the reliability of this proxy in reconstructing paleohydrographical data other than the classical sea-surface temperatures, taking advantage of an update regarding a set of extractions from the World Ocean Atlas for transfer functions. Our study focuses on the last glacial period and its high climatic variability, using a set of cores distributed along the European margin, from temperate to subpolar sites. We discuss the significance of the reconstructed parameters regarding abrupt and extreme climate events, such as the well-known Heinrich events. We tested the robustness of the newly obtained paleodata by comparing them with older published reconstructions, especially those based on the complementary dinoflagellate cyst proxy. This study shows that the potential of planktonic foraminifera permits going further in reconstructions, with a good degree of confidence; however, this implies considering ecological forcings in a more holistic perspective, with the corollary to integrate the message of this fossil protist group, i.e., the obtained parameters, in light of a cohort of other data. This article constitutes a first step in this direction. Article in Journal/Newspaper North Atlantic Planktonic foraminifera Sea ice Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Geosciences 11 10 409 |
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 |
sea surface paleohydrographical reconstructions North Atlantic Ocean foraminifera |
spellingShingle |
sea surface paleohydrographical reconstructions North Atlantic Ocean foraminifera Eynaud, Frédérique Zaragosi, Sébastien Wary, Mélanie Woussen, Emilie Rossignol, Linda Voisin, Adrien Are Past Sea-Ice Reconstructions Based on Planktonic Foraminifera Realistic? Study of the Last 50 ka as a Test to Validate Reconstructed Paleohydrography Derived from Transfer Functions Applied to Their Fossil Assemblages |
topic_facet |
sea surface paleohydrographical reconstructions North Atlantic Ocean foraminifera |
description |
Since its existence, paleoceanography has relied on fossilized populations of planktonic foraminifera. Except for some extreme environments, this calcareous protist group composes most of the silty-to-sandy fraction of the marine sediments, i.e., the foraminiferal oozes, and its extraction is probably the simplest among the currently existing set of marine fossil proxies. This tool has provided significant insights in the building of knowledge on past climates based on marine archives, especially with the quantification of past hydrographical variables, which have been a turning point for major comprehensive studies and a step towards the essential junction of modelling and paleodata . In this article, using the modern analog technique and a database compiling modern analogs (n = 1007), we test the reliability of this proxy in reconstructing paleohydrographical data other than the classical sea-surface temperatures, taking advantage of an update regarding a set of extractions from the World Ocean Atlas for transfer functions. Our study focuses on the last glacial period and its high climatic variability, using a set of cores distributed along the European margin, from temperate to subpolar sites. We discuss the significance of the reconstructed parameters regarding abrupt and extreme climate events, such as the well-known Heinrich events. We tested the robustness of the newly obtained paleodata by comparing them with older published reconstructions, especially those based on the complementary dinoflagellate cyst proxy. This study shows that the potential of planktonic foraminifera permits going further in reconstructions, with a good degree of confidence; however, this implies considering ecological forcings in a more holistic perspective, with the corollary to integrate the message of this fossil protist group, i.e., the obtained parameters, in light of a cohort of other data. This article constitutes a first step in this direction. |
format |
Article in Journal/Newspaper |
author |
Eynaud, Frédérique Zaragosi, Sébastien Wary, Mélanie Woussen, Emilie Rossignol, Linda Voisin, Adrien |
author_facet |
Eynaud, Frédérique Zaragosi, Sébastien Wary, Mélanie Woussen, Emilie Rossignol, Linda Voisin, Adrien |
author_sort |
Eynaud, Frédérique |
title |
Are Past Sea-Ice Reconstructions Based on Planktonic Foraminifera Realistic? Study of the Last 50 ka as a Test to Validate Reconstructed Paleohydrography Derived from Transfer Functions Applied to Their Fossil Assemblages |
title_short |
Are Past Sea-Ice Reconstructions Based on Planktonic Foraminifera Realistic? Study of the Last 50 ka as a Test to Validate Reconstructed Paleohydrography Derived from Transfer Functions Applied to Their Fossil Assemblages |
title_full |
Are Past Sea-Ice Reconstructions Based on Planktonic Foraminifera Realistic? Study of the Last 50 ka as a Test to Validate Reconstructed Paleohydrography Derived from Transfer Functions Applied to Their Fossil Assemblages |
title_fullStr |
Are Past Sea-Ice Reconstructions Based on Planktonic Foraminifera Realistic? Study of the Last 50 ka as a Test to Validate Reconstructed Paleohydrography Derived from Transfer Functions Applied to Their Fossil Assemblages |
title_full_unstemmed |
Are Past Sea-Ice Reconstructions Based on Planktonic Foraminifera Realistic? Study of the Last 50 ka as a Test to Validate Reconstructed Paleohydrography Derived from Transfer Functions Applied to Their Fossil Assemblages |
title_sort |
are past sea-ice reconstructions based on planktonic foraminifera realistic? study of the last 50 ka as a test to validate reconstructed paleohydrography derived from transfer functions applied to their fossil assemblages |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://archimer.ifremer.fr/doc/00725/83687/88742.pdf https://archimer.ifremer.fr/doc/00725/83687/88743.zip https://doi.org/10.3390/geosciences11100409 https://archimer.ifremer.fr/doc/00725/83687/ |
genre |
North Atlantic Planktonic foraminifera Sea ice |
genre_facet |
North Atlantic Planktonic foraminifera Sea ice |
op_source |
Geosciences (2076-3263) (MDPI AG), 2021-10 , Vol. 11 , N. 10 , P. 409 (22p.) |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/243908/EU//PAST4FUTURE https://archimer.ifremer.fr/doc/00725/83687/88742.pdf https://archimer.ifremer.fr/doc/00725/83687/88743.zip doi:10.3390/geosciences11100409 https://archimer.ifremer.fr/doc/00725/83687/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.3390/geosciences11100409 |
container_title |
Geosciences |
container_volume |
11 |
container_issue |
10 |
container_start_page |
409 |
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1766135419361034240 |