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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Online Access: | https://doi.org/10.17863/CAM.37186 https://www.repository.cam.ac.uk/handle/1810/289956 |
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ftunivcam:oai:www.repository.cam.ac.uk:1810/289956 2023-07-30T04:06:24+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 Electronic application/pdf https://doi.org/10.17863/CAM.37186 https://www.repository.cam.ac.uk/handle/1810/289956 eng eng Springer Science and Business Media LLC http://dx.doi.org/10.1038/s41598-018-36935-7 Sci Rep doi:10.17863/CAM.37186 https://www.repository.cam.ac.uk/handle/1810/289956 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Calcification Physiologic Calcium Climate Foraminifera Fossils Magnesium Oceans and Seas Oxygen Isotopes Plankton Seawater Temperature Article 2019 ftunivcam https://doi.org/10.17863/CAM.37186 2023-07-10T21:14:02Z 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. Article in Journal/Newspaper Planktonic foraminifera Apollo - University of Cambridge Repository |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Calcification Physiologic Calcium Climate Foraminifera Fossils Magnesium Oceans and Seas Oxygen Isotopes Plankton Seawater Temperature |
spellingShingle |
Calcification Physiologic Calcium Climate Foraminifera Fossils Magnesium Oceans and Seas Oxygen Isotopes Plankton Seawater Temperature 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 |
Calcification Physiologic Calcium Climate Foraminifera Fossils Magnesium Oceans and Seas Oxygen Isotopes Plankton Seawater Temperature |
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 |
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 |
Springer Science and Business Media LLC |
publishDate |
2019 |
url |
https://doi.org/10.17863/CAM.37186 https://www.repository.cam.ac.uk/handle/1810/289956 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
doi:10.17863/CAM.37186 https://www.repository.cam.ac.uk/handle/1810/289956 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.17863/CAM.37186 |
_version_ |
1772818977699921920 |