Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth
International audience The translation of the original seawater signal (i.e. ambient temperature and δ 18 O sw) into distinct chambers of a single shell of a foraminifer during calcification can influence our interpretation of surface ocean conditions of the past, when based upon oxygen and carbon s...
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ftuniversailles:oai:HAL:hal-02974728v1 2024-04-28T08:36:35+00:00 Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth Pracht, Hilde Metcalfe, Brett Peeters, Frank Vrije Universiteit Amsterdam Amsterdam (VU) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2019 https://hal.science/hal-02974728 https://hal.science/hal-02974728/document https://hal.science/hal-02974728/file/bg-16-643-2019.pdf https://doi.org/10.5194/bg-16-643-2019 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-16-643-2019 hal-02974728 https://hal.science/hal-02974728 https://hal.science/hal-02974728/document https://hal.science/hal-02974728/file/bg-16-643-2019.pdf doi:10.5194/bg-16-643-2019 info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-02974728 Biogeosciences, 2019, 16 (2), pp.643-661. ⟨10.5194/bg-16-643-2019⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2019 ftuniversailles https://doi.org/10.5194/bg-16-643-2019 2024-04-04T17:36:17Z International audience The translation of the original seawater signal (i.e. ambient temperature and δ 18 O sw) into distinct chambers of a single shell of a foraminifer during calcification can influence our interpretation of surface ocean conditions of the past, when based upon oxygen and carbon stable isotope geochemistry. In this study three different hypotheses were tested to gain more insight into biological and ecological processes that influence the resultant composition of stable isotopes of oxygen (δ 18 O) in the shells of planktonic foraminifera. These hypotheses were related to the shell size; the differences in isotopic composition between the final chamber and the remaining shell; and the differences between different species. Shells of Trilobatus sacculifer, Globigerinoides ruber white and Neogloboquad-rina dutertrei were picked from the top of multi-core GS07-150-24, of modern age, offshore of northeastern Brazil (3 • 46.474 S, 37 • 03.849 W) and analysed for single-shell and single-chamber stable isotope analysis. We show that the mean value of δ 18 O of the final chambers (δ 18 O F) is 0.2 ‰ ± 0.4 ‰ (1σ) higher than the mean value δ 18 O of the test minus the final chamber (δ 18 O <F) of T. sacculifer. The formation of the final chamber happens at temperatures that are approximately 1 • C cooler than the chambers formed prior, suggesting both ontogenetic depth migration to deeper water and a potential offset from the surface signal. Furthermore, we show that there is no statistical difference in the δ 18 O sacculifer values of shells of three different size classes of T. sacculifer, although the pattern between the different size classes indicates depth migration during the life and growth of T. sacculifer. Comparison of vital effect corrected δ 18 O shell between T. sacculifer, G. ruber white and N. dutertrei suggests that G. ruber has a slightly shallower depth habitat (∼ 90-120 m) compared to the other two species (∼ 100-130 m). Disentangling depth vs. seasonal habitat is complicated ... Article in Journal/Newspaper Planktonic foraminifera Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Biogeosciences 16 2 643 661 |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Pracht, Hilde Metcalfe, Brett Peeters, Frank Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The translation of the original seawater signal (i.e. ambient temperature and δ 18 O sw) into distinct chambers of a single shell of a foraminifer during calcification can influence our interpretation of surface ocean conditions of the past, when based upon oxygen and carbon stable isotope geochemistry. In this study three different hypotheses were tested to gain more insight into biological and ecological processes that influence the resultant composition of stable isotopes of oxygen (δ 18 O) in the shells of planktonic foraminifera. These hypotheses were related to the shell size; the differences in isotopic composition between the final chamber and the remaining shell; and the differences between different species. Shells of Trilobatus sacculifer, Globigerinoides ruber white and Neogloboquad-rina dutertrei were picked from the top of multi-core GS07-150-24, of modern age, offshore of northeastern Brazil (3 • 46.474 S, 37 • 03.849 W) and analysed for single-shell and single-chamber stable isotope analysis. We show that the mean value of δ 18 O of the final chambers (δ 18 O F) is 0.2 ‰ ± 0.4 ‰ (1σ) higher than the mean value δ 18 O of the test minus the final chamber (δ 18 O <F) of T. sacculifer. The formation of the final chamber happens at temperatures that are approximately 1 • C cooler than the chambers formed prior, suggesting both ontogenetic depth migration to deeper water and a potential offset from the surface signal. Furthermore, we show that there is no statistical difference in the δ 18 O sacculifer values of shells of three different size classes of T. sacculifer, although the pattern between the different size classes indicates depth migration during the life and growth of T. sacculifer. Comparison of vital effect corrected δ 18 O shell between T. sacculifer, G. ruber white and N. dutertrei suggests that G. ruber has a slightly shallower depth habitat (∼ 90-120 m) compared to the other two species (∼ 100-130 m). Disentangling depth vs. seasonal habitat is complicated ... |
author2 |
Vrije Universiteit Amsterdam Amsterdam (VU) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
format |
Article in Journal/Newspaper |
author |
Pracht, Hilde Metcalfe, Brett Peeters, Frank |
author_facet |
Pracht, Hilde Metcalfe, Brett Peeters, Frank |
author_sort |
Pracht, Hilde |
title |
Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth |
title_short |
Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth |
title_full |
Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth |
title_fullStr |
Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth |
title_full_unstemmed |
Oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth |
title_sort |
oxygen isotope composition of the final chamber of planktic foraminifera provides evidence of vertical migration and depth-integrated growth |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-02974728 https://hal.science/hal-02974728/document https://hal.science/hal-02974728/file/bg-16-643-2019.pdf https://doi.org/10.5194/bg-16-643-2019 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-02974728 Biogeosciences, 2019, 16 (2), pp.643-661. ⟨10.5194/bg-16-643-2019⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-16-643-2019 hal-02974728 https://hal.science/hal-02974728 https://hal.science/hal-02974728/document https://hal.science/hal-02974728/file/bg-16-643-2019.pdf doi:10.5194/bg-16-643-2019 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/bg-16-643-2019 |
container_title |
Biogeosciences |
container_volume |
16 |
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2 |
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643 |
op_container_end_page |
661 |
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1797568310875783168 |