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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ftpubmed:oai:pubmedcentral.nih.gov:6346091 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 2019-01-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6346091/ http://www.ncbi.nlm.nih.gov/pubmed/30679608 https://doi.org/10.1038/s41598-018-36935-7 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6346091/ http://www.ncbi.nlm.nih.gov/pubmed/30679608 http://dx.doi.org/10.1038/s41598-018-36935-7 © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2019 ftpubmed https://doi.org/10.1038/s41598-018-36935-7 2019-02-03T01:36:14Z 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 δ18O 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. Text Planktonic foraminifera PubMed Central (PMC) Scientific Reports 9 1 |
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Article 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 |
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Article |
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 δ18O 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 |
Text |
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 |
Nature Publishing Group UK |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6346091/ http://www.ncbi.nlm.nih.gov/pubmed/30679608 https://doi.org/10.1038/s41598-018-36935-7 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6346091/ http://www.ncbi.nlm.nih.gov/pubmed/30679608 http://dx.doi.org/10.1038/s41598-018-36935-7 |
op_rights |
© The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-018-36935-7 |
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Scientific Reports |
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9 |
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