Calcification, dissolution and test properties of modern planktonic foraminifera from the Central Atlantic Ocean
The mass of well-preserved calcite in planktonic foraminifera shells provides an indication of the calcification potential of the surface ocean. Here we report the shell weight of 8 different abundant planktonic foraminifera species from a set of core-top sediments along the Mid-Atlantic Ridge. The...
Published in: | Frontiers in Marine Science |
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Language: | English |
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2022
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Online Access: | https://doi.org/10.3389/fmars.2022.864801 https://ora.ox.ac.uk/objects/uuid:25f45639-bf6f-4cad-b580-6c2ed39ee599 |
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ftuloxford:oai:ora.ox.ac.uk:uuid:25f45639-bf6f-4cad-b580-6c2ed39ee599 2023-05-15T18:00:24+02:00 Calcification, dissolution and test properties of modern planktonic foraminifera from the Central Atlantic Ocean Zarkogiannis, SD Iwasaki, S Rae, JWB Schmidt, MW Mortyn, PG Kontakiotis, G Hertzberg, JE Rickaby, REM 2022-09-02 https://doi.org/10.3389/fmars.2022.864801 https://ora.ox.ac.uk/objects/uuid:25f45639-bf6f-4cad-b580-6c2ed39ee599 eng eng Frontiers Media doi:10.3389/fmars.2022.864801 https://ora.ox.ac.uk/objects/uuid:25f45639-bf6f-4cad-b580-6c2ed39ee599 https://doi.org/10.3389/fmars.2022.864801 info:eu-repo/semantics/openAccess CC Attribution (CC BY) CC-BY Journal article 2022 ftuloxford https://doi.org/10.3389/fmars.2022.864801 2022-09-08T22:06:13Z The mass of well-preserved calcite in planktonic foraminifera shells provides an indication of the calcification potential of the surface ocean. Here we report the shell weight of 8 different abundant planktonic foraminifera species from a set of core-top sediments along the Mid-Atlantic Ridge. The analyses showed that near the equator, foraminifera shells of equivalent size weigh on average 1/3 less than those from the middle latitudes. The carbonate preservation state of the samples was assessed by high resolution X-ray microcomputed tomographic analyses of Globigerinoides ruber and Globorotalia truncatulinoides specimens. The specimen preservation was deemed good and does not overall explain the observed shell mass variations. However, G. ruber shell weights might be to some extent compromised by residual fine debris internal contamination. Deep dwelling species possess heavier tests than their surface-dwelling counterparts, suggesting that the weight of the foraminifera shells changes as a function of the depth habitat. Ambient seawater carbonate chemistry of declining carbonate ion concentration with depth cannot account for this interspecies difference. The results suggest a depth regulating function for plankton calcification, which is not dictated by water column acidity. Article in Journal/Newspaper Planktonic foraminifera ORA - Oxford University Research Archive Mid-Atlantic Ridge Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
description |
The mass of well-preserved calcite in planktonic foraminifera shells provides an indication of the calcification potential of the surface ocean. Here we report the shell weight of 8 different abundant planktonic foraminifera species from a set of core-top sediments along the Mid-Atlantic Ridge. The analyses showed that near the equator, foraminifera shells of equivalent size weigh on average 1/3 less than those from the middle latitudes. The carbonate preservation state of the samples was assessed by high resolution X-ray microcomputed tomographic analyses of Globigerinoides ruber and Globorotalia truncatulinoides specimens. The specimen preservation was deemed good and does not overall explain the observed shell mass variations. However, G. ruber shell weights might be to some extent compromised by residual fine debris internal contamination. Deep dwelling species possess heavier tests than their surface-dwelling counterparts, suggesting that the weight of the foraminifera shells changes as a function of the depth habitat. Ambient seawater carbonate chemistry of declining carbonate ion concentration with depth cannot account for this interspecies difference. The results suggest a depth regulating function for plankton calcification, which is not dictated by water column acidity. |
format |
Article in Journal/Newspaper |
author |
Zarkogiannis, SD Iwasaki, S Rae, JWB Schmidt, MW Mortyn, PG Kontakiotis, G Hertzberg, JE Rickaby, REM |
spellingShingle |
Zarkogiannis, SD Iwasaki, S Rae, JWB Schmidt, MW Mortyn, PG Kontakiotis, G Hertzberg, JE Rickaby, REM Calcification, dissolution and test properties of modern planktonic foraminifera from the Central Atlantic Ocean |
author_facet |
Zarkogiannis, SD Iwasaki, S Rae, JWB Schmidt, MW Mortyn, PG Kontakiotis, G Hertzberg, JE Rickaby, REM |
author_sort |
Zarkogiannis, SD |
title |
Calcification, dissolution and test properties of modern planktonic foraminifera from the Central Atlantic Ocean |
title_short |
Calcification, dissolution and test properties of modern planktonic foraminifera from the Central Atlantic Ocean |
title_full |
Calcification, dissolution and test properties of modern planktonic foraminifera from the Central Atlantic Ocean |
title_fullStr |
Calcification, dissolution and test properties of modern planktonic foraminifera from the Central Atlantic Ocean |
title_full_unstemmed |
Calcification, dissolution and test properties of modern planktonic foraminifera from the Central Atlantic Ocean |
title_sort |
calcification, dissolution and test properties of modern planktonic foraminifera from the central atlantic ocean |
publisher |
Frontiers Media |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.864801 https://ora.ox.ac.uk/objects/uuid:25f45639-bf6f-4cad-b580-6c2ed39ee599 |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
doi:10.3389/fmars.2022.864801 https://ora.ox.ac.uk/objects/uuid:25f45639-bf6f-4cad-b580-6c2ed39ee599 https://doi.org/10.3389/fmars.2022.864801 |
op_rights |
info:eu-repo/semantics/openAccess CC Attribution (CC BY) |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2022.864801 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1766169463000924160 |