Cd/Ca ratios of in situ collected planktonic foraminiferal tests
International audience The Cd/Ca ratios of planktonic foraminiferal tests have been used to reconstruct surface water nutrient utilization and paleoproductivity. The reliability of this proxy has hitherto not been comprehensively studied, however. To fill this gap, we present novel Cd/Ca data for in...
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Online Access: | https://univ-angers.hal.science/hal-03278084 https://univ-angers.hal.science/hal-03278084/document https://univ-angers.hal.science/hal-03278084/file/2007PA001524.pdf https://doi.org/10.1029/2007PA001524 |
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ftunivlyon:oai:HAL:hal-03278084v1 2023-11-12T04:22:34+01:00 Cd/Ca ratios of in situ collected planktonic foraminiferal tests Ripperger, S. Schiebel, Ralf Rehkämper, M. Halliday, A. Laboratoire de Planétologie et Géodynamique de Nantes UMR 6112 (LPGN) Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS) Imperial College London Laboratoire Magmas et Volcans (LMV) Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Institut de Recherche pour le Développement et la société-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS) 2008 https://univ-angers.hal.science/hal-03278084 https://univ-angers.hal.science/hal-03278084/document https://univ-angers.hal.science/hal-03278084/file/2007PA001524.pdf https://doi.org/10.1029/2007PA001524 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2007PA001524 hal-03278084 https://univ-angers.hal.science/hal-03278084 https://univ-angers.hal.science/hal-03278084/document https://univ-angers.hal.science/hal-03278084/file/2007PA001524.pdf doi:10.1029/2007PA001524 OKINA: ua3894 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0883-8305 Paleoceanography https://univ-angers.hal.science/hal-03278084 Paleoceanography, 2008, 23 (3), Non spécifié. ⟨10.1029/2007PA001524⟩ https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2007PA001524 [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2008 ftunivlyon https://doi.org/10.1029/2007PA001524 2023-11-01T17:39:06Z International audience The Cd/Ca ratios of planktonic foraminiferal tests have been used to reconstruct surface water nutrient utilization and paleoproductivity. The reliability of this proxy has hitherto not been comprehensively studied, however. To fill this gap, we present novel Cd/Ca data for in situ sampled and sedimentary planktonic foraminifers of the species Globigerinoides ruber, G. sacculifer, Globigerina bulloides, Orbulina universa, and Globorotalia truncatulinoides from the Arabian Sea and the North Atlantic. The Cd/Ca ratios obtained for G. ruber sampled from the live habitat generally display a correlation with seawater phosphate content, but no such trend is observed for G. sacculifer. This distinct behavior may reflect different ecological niches or speciesspecific incorporation of Cd into the calcite shells of the organisms. The Cd/Ca ratios of G. ruber, G. sacculifer, and G. bulloides from surface sediments are consistently higher than those obtained for live collected specimens of the same species. Postdepositional alteration of the tests is unlikely to be responsible for these systematic differences. Rather, they appear to reflect a combination of factors, including the formation of calcite crusts with high Cd contents, the different timescales that are represented by in situ and sedimentary foraminiferal tests, and the dominance of tests from periods of high productivity in sediments. Our results also reveal higher Cd/Ca ratios for live G. ruber than for settling tests of the same species. This suggests that planktonic foraminiferal shells are partially dissolved while they individually settle through the water column. Sedimentary tests, however, will be less affected by dissolution processes because these shells are primarily deposited in mass sinking events, which feature much higher settling velocities than those experienced by single settling shells Article in Journal/Newspaper North Atlantic Université de Lyon: HAL Paleoceanography 23 3 n/a n/a |
institution |
Open Polar |
collection |
Université de Lyon: HAL |
op_collection_id |
ftunivlyon |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Ripperger, S. Schiebel, Ralf Rehkämper, M. Halliday, A. Cd/Ca ratios of in situ collected planktonic foraminiferal tests |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience The Cd/Ca ratios of planktonic foraminiferal tests have been used to reconstruct surface water nutrient utilization and paleoproductivity. The reliability of this proxy has hitherto not been comprehensively studied, however. To fill this gap, we present novel Cd/Ca data for in situ sampled and sedimentary planktonic foraminifers of the species Globigerinoides ruber, G. sacculifer, Globigerina bulloides, Orbulina universa, and Globorotalia truncatulinoides from the Arabian Sea and the North Atlantic. The Cd/Ca ratios obtained for G. ruber sampled from the live habitat generally display a correlation with seawater phosphate content, but no such trend is observed for G. sacculifer. This distinct behavior may reflect different ecological niches or speciesspecific incorporation of Cd into the calcite shells of the organisms. The Cd/Ca ratios of G. ruber, G. sacculifer, and G. bulloides from surface sediments are consistently higher than those obtained for live collected specimens of the same species. Postdepositional alteration of the tests is unlikely to be responsible for these systematic differences. Rather, they appear to reflect a combination of factors, including the formation of calcite crusts with high Cd contents, the different timescales that are represented by in situ and sedimentary foraminiferal tests, and the dominance of tests from periods of high productivity in sediments. Our results also reveal higher Cd/Ca ratios for live G. ruber than for settling tests of the same species. This suggests that planktonic foraminiferal shells are partially dissolved while they individually settle through the water column. Sedimentary tests, however, will be less affected by dissolution processes because these shells are primarily deposited in mass sinking events, which feature much higher settling velocities than those experienced by single settling shells |
author2 |
Laboratoire de Planétologie et Géodynamique de Nantes UMR 6112 (LPGN) Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS) Imperial College London Laboratoire Magmas et Volcans (LMV) Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Institut de Recherche pour le Développement et la société-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC) Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Clermont Auvergne 2017-2020 (UCA 2017-2020 )-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Ripperger, S. Schiebel, Ralf Rehkämper, M. Halliday, A. |
author_facet |
Ripperger, S. Schiebel, Ralf Rehkämper, M. Halliday, A. |
author_sort |
Ripperger, S. |
title |
Cd/Ca ratios of in situ collected planktonic foraminiferal tests |
title_short |
Cd/Ca ratios of in situ collected planktonic foraminiferal tests |
title_full |
Cd/Ca ratios of in situ collected planktonic foraminiferal tests |
title_fullStr |
Cd/Ca ratios of in situ collected planktonic foraminiferal tests |
title_full_unstemmed |
Cd/Ca ratios of in situ collected planktonic foraminiferal tests |
title_sort |
cd/ca ratios of in situ collected planktonic foraminiferal tests |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://univ-angers.hal.science/hal-03278084 https://univ-angers.hal.science/hal-03278084/document https://univ-angers.hal.science/hal-03278084/file/2007PA001524.pdf https://doi.org/10.1029/2007PA001524 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0883-8305 Paleoceanography https://univ-angers.hal.science/hal-03278084 Paleoceanography, 2008, 23 (3), Non spécifié. ⟨10.1029/2007PA001524⟩ https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2007PA001524 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2007PA001524 hal-03278084 https://univ-angers.hal.science/hal-03278084 https://univ-angers.hal.science/hal-03278084/document https://univ-angers.hal.science/hal-03278084/file/2007PA001524.pdf doi:10.1029/2007PA001524 OKINA: ua3894 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2007PA001524 |
container_title |
Paleoceanography |
container_volume |
23 |
container_issue |
3 |
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1782337589831794688 |