Influence of surface ocean density on planktonic foraminifera calcification
This study provides evidence that ambient seawater density influences calcification and may account for the observed planktonic foraminifera shell mass increase during glacial times. Volumes of weighed fossil Globigerina bulloides shells were accurately determined using X-ray Computer Tomography and...
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ftarchimer:oai:archimer.ifremer.fr:59268 2023-05-15T18:00:28+02:00 Influence of surface ocean density on planktonic foraminifera calcification Zarkogiannis, Stergios D. Antonarakou, Assimina Tripati, Aradhna Kontakiotis, George Mortyn, P. Graham Drinia, Hara Greaves, Mervyn 2019-01 application/pdf https://archimer.ifremer.fr/doc/00481/59268/61983.pdf https://archimer.ifremer.fr/doc/00481/59268/61984.xlsx https://archimer.ifremer.fr/doc/00481/59268/61985.xlsx https://doi.org/10.1038/s41598-018-36935-7 https://archimer.ifremer.fr/doc/00481/59268/ eng eng Nature Publishing Group https://archimer.ifremer.fr/doc/00481/59268/61983.pdf https://archimer.ifremer.fr/doc/00481/59268/61984.xlsx https://archimer.ifremer.fr/doc/00481/59268/61985.xlsx doi:10.1038/s41598-018-36935-7 https://archimer.ifremer.fr/doc/00481/59268/ info:eu-repo/semantics/openAccess restricted use Scientific Reports (2045-2322) (Nature Publishing Group), 2019-01 , Vol. 9 , N. 533 , P. 10p. text Publication info:eu-repo/semantics/article 2019 ftarchimer https://doi.org/10.1038/s41598-018-36935-7 2023-01-10T23:50:40Z This study provides evidence that ambient seawater density influences calcification and may account for the observed planktonic foraminifera shell mass increase during glacial times. Volumes of weighed fossil Globigerina bulloides shells were accurately determined using X-ray Computer Tomography and were combined with water density reconstructions from Mg/Ca and delta O-18 measurements to estimate the buoyancy force exerted on each shell. After assessment of dissolution effects, the resulting relationship between shell mass and buoyancy suggests that heavier shells would need to be precipitated in glacial climates in order for these organisms to remain at their optimum living depth, and counterbalance the increased buoyant force of a denser, glacial ocean. Furthermore, the reanalysis of bibliographic data allowed the determination of a relationship between G. bulloides shell mass and ocean density, which introduces implications of a negative feedback mechanism for the uptake of atmospheric CO2 by the oceans. Article in Journal/Newspaper Planktonic foraminifera Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Scientific Reports 9 1 |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
This study provides evidence that ambient seawater density influences calcification and may account for the observed planktonic foraminifera shell mass increase during glacial times. Volumes of weighed fossil Globigerina bulloides shells were accurately determined using X-ray Computer Tomography and were combined with water density reconstructions from Mg/Ca and delta O-18 measurements to estimate the buoyancy force exerted on each shell. After assessment of dissolution effects, the resulting relationship between shell mass and buoyancy suggests that heavier shells would need to be precipitated in glacial climates in order for these organisms to remain at their optimum living depth, and counterbalance the increased buoyant force of a denser, glacial ocean. Furthermore, the reanalysis of bibliographic data allowed the determination of a relationship between G. bulloides shell mass and ocean density, which introduces implications of a negative feedback mechanism for the uptake of atmospheric CO2 by the oceans. |
format |
Article in Journal/Newspaper |
author |
Zarkogiannis, Stergios D. Antonarakou, Assimina Tripati, Aradhna Kontakiotis, George Mortyn, P. Graham Drinia, Hara Greaves, Mervyn |
spellingShingle |
Zarkogiannis, Stergios D. Antonarakou, Assimina Tripati, Aradhna Kontakiotis, George Mortyn, P. Graham Drinia, Hara Greaves, Mervyn Influence of surface ocean density on planktonic foraminifera calcification |
author_facet |
Zarkogiannis, Stergios D. Antonarakou, Assimina Tripati, Aradhna Kontakiotis, George Mortyn, P. Graham Drinia, Hara Greaves, Mervyn |
author_sort |
Zarkogiannis, Stergios D. |
title |
Influence of surface ocean density on planktonic foraminifera calcification |
title_short |
Influence of surface ocean density on planktonic foraminifera calcification |
title_full |
Influence of surface ocean density on planktonic foraminifera calcification |
title_fullStr |
Influence of surface ocean density on planktonic foraminifera calcification |
title_full_unstemmed |
Influence of surface ocean density on planktonic foraminifera calcification |
title_sort |
influence of surface ocean density on planktonic foraminifera calcification |
publisher |
Nature Publishing Group |
publishDate |
2019 |
url |
https://archimer.ifremer.fr/doc/00481/59268/61983.pdf https://archimer.ifremer.fr/doc/00481/59268/61984.xlsx https://archimer.ifremer.fr/doc/00481/59268/61985.xlsx https://doi.org/10.1038/s41598-018-36935-7 https://archimer.ifremer.fr/doc/00481/59268/ |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Scientific Reports (2045-2322) (Nature Publishing Group), 2019-01 , Vol. 9 , N. 533 , P. 10p. |
op_relation |
https://archimer.ifremer.fr/doc/00481/59268/61983.pdf https://archimer.ifremer.fr/doc/00481/59268/61984.xlsx https://archimer.ifremer.fr/doc/00481/59268/61985.xlsx doi:10.1038/s41598-018-36935-7 https://archimer.ifremer.fr/doc/00481/59268/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1038/s41598-018-36935-7 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
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1766169570618376192 |