Influence of surface ocean density on planktonic foraminifera calcification
International audience 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...
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ftunivnantes:oai:HAL:insu-03684845v1 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 Laboratoire Géosciences Océan (LGO) Université de Bretagne Sud (UBS)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) 2019 https://hal-insu.archives-ouvertes.fr/insu-03684845 https://hal-insu.archives-ouvertes.fr/insu-03684845/document https://hal-insu.archives-ouvertes.fr/insu-03684845/file/s41598-018-36935-7.pdf https://doi.org/10.1038/s41598-018-36935-7 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-018-36935-7 insu-03684845 https://hal-insu.archives-ouvertes.fr/insu-03684845 https://hal-insu.archives-ouvertes.fr/insu-03684845/document https://hal-insu.archives-ouvertes.fr/insu-03684845/file/s41598-018-36935-7.pdf BIBCODE: 2019NatSR.9.533Z doi:10.1038/s41598-018-36935-7 PUBMEDCENTRAL: PMC6346091 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal-insu.archives-ouvertes.fr/insu-03684845 Scientific Reports, Nature Publishing Group, 2019, 9, 203, p. 38-55. ⟨10.1038/s41598-018-36935-7⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2019 ftunivnantes https://doi.org/10.1038/s41598-018-36935-7 2022-08-30T22:52:51Z International audience 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 δ 18 O 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 CO 2 by the oceans. Article in Journal/Newspaper Planktonic foraminifera Université de Nantes: HAL-UNIV-NANTES Scientific Reports 9 1 |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] 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 |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience 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 δ 18 O 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 CO 2 by the oceans. |
author2 |
Laboratoire Géosciences Océan (LGO) Université de Bretagne Sud (UBS)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Zarkogiannis, Stergios D. Antonarakou, Assimina Tripati, Aradhna Kontakiotis, George Mortyn, P. Graham Drinia, Hara Greaves, Mervyn |
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 |
HAL CCSD |
publishDate |
2019 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03684845 https://hal-insu.archives-ouvertes.fr/insu-03684845/document https://hal-insu.archives-ouvertes.fr/insu-03684845/file/s41598-018-36935-7.pdf https://doi.org/10.1038/s41598-018-36935-7 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 2045-2322 EISSN: 2045-2322 Scientific Reports https://hal-insu.archives-ouvertes.fr/insu-03684845 Scientific Reports, Nature Publishing Group, 2019, 9, 203, p. 38-55. ⟨10.1038/s41598-018-36935-7⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-018-36935-7 insu-03684845 https://hal-insu.archives-ouvertes.fr/insu-03684845 https://hal-insu.archives-ouvertes.fr/insu-03684845/document https://hal-insu.archives-ouvertes.fr/insu-03684845/file/s41598-018-36935-7.pdf BIBCODE: 2019NatSR.9.533Z doi:10.1038/s41598-018-36935-7 PUBMEDCENTRAL: PMC6346091 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41598-018-36935-7 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766169568197214208 |