Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica
International audience The Antarctic coastal zone is an area of high primary productivity, particularly within coastal polynyas, where large phytoplankton blooms and drawdown of CO 2 occur. Reconstruction of historical primary productivity changes and the associated driving factors could provide bas...
Published in: | Biogeosciences |
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Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Online Access: | https://hal.science/hal-03378695 https://hal.science/hal-03378695/document https://hal.science/hal-03378695/file/Ashley_BG2021.pdf https://doi.org/10.5194/bg-18-5555-2021 |
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Open Polar |
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HAL Sorbonne Université |
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English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Ashley, Kate E. Crosta, Xavier Etourneau, Johan Campagne, Philippine Gilchrist, Harry Ibraheem, Uthmaan Greene, Sarah, E Schmidt, Sabine Eley, Yvette Massé, Guillaume Bendle, James Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience The Antarctic coastal zone is an area of high primary productivity, particularly within coastal polynyas, where large phytoplankton blooms and drawdown of CO 2 occur. Reconstruction of historical primary productivity changes and the associated driving factors could provide baseline insights on the role of these areas as sinks for atmospheric CO 2 , especially in the context of projected changes in coastal Antarctic sea ice. Here we investigate the potential for using carbon isotopes (δ 13 C) of fatty acids in marine sediments as a proxy for primary productivity. We use a highly resolved sediment core from off the coast of Adélie Land spanning the last ∼ 400 years and monitor changes in the concentrations and δ 13 C of fatty acids along with other proxy data from the same core. We discuss the different possible drivers of their variability and argue that C 24 fatty acid δ 13 C predominantly reflects phytoplankton productivity in openwater environments, while C 18 fatty acid δ 13 C reflects productivity in the marginal ice zone. These new proxies have implications for better understanding carbon cycle dynamics in the Antarctica coastal zone in future palaeoclimate studies. |
author2 |
School of Geography, Earth and Environmental Sciences Birmingham University of Birmingham Birmingham Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL) Takuvik International Research Laboratory Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) Variabilité de l'Océan et de la Glace de mer (VOG) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) ANR CLIMICE European Project: 203441,EC:FP7:ERC,ERC-2007-StG,ICEPROXY(2008) |
format |
Article in Journal/Newspaper |
author |
Ashley, Kate E. Crosta, Xavier Etourneau, Johan Campagne, Philippine Gilchrist, Harry Ibraheem, Uthmaan Greene, Sarah, E Schmidt, Sabine Eley, Yvette Massé, Guillaume Bendle, James |
author_facet |
Ashley, Kate E. Crosta, Xavier Etourneau, Johan Campagne, Philippine Gilchrist, Harry Ibraheem, Uthmaan Greene, Sarah, E Schmidt, Sabine Eley, Yvette Massé, Guillaume Bendle, James |
author_sort |
Ashley, Kate E. |
title |
Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica |
title_short |
Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica |
title_full |
Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica |
title_fullStr |
Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica |
title_full_unstemmed |
Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica |
title_sort |
exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of adélie land, east antarctica |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03378695 https://hal.science/hal-03378695/document https://hal.science/hal-03378695/file/Ashley_BG2021.pdf https://doi.org/10.5194/bg-18-5555-2021 |
genre |
Antarc* Antarctic Antarctica East Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Sea ice |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-03378695 Biogeosciences, 2021, pp.5555-5571. ⟨10.5194/bg-18-5555-2021⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-18-5555-2021 info:eu-repo/grantAgreement/EC/FP7/203441/EU/Novel Lipid Biomarkers from Polar Ice: Climatic and Ecological Applications./ICEPROXY hal-03378695 https://hal.science/hal-03378695 https://hal.science/hal-03378695/document https://hal.science/hal-03378695/file/Ashley_BG2021.pdf doi:10.5194/bg-18-5555-2021 WOS: 000709151400001 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/bg-18-5555-2021 |
container_title |
Biogeosciences |
container_volume |
18 |
container_issue |
19 |
container_start_page |
5555 |
op_container_end_page |
5571 |
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spelling |
ftsorbonneuniv:oai:HAL:hal-03378695v1 2024-05-19T07:32:31+00:00 Exploring the use of compound-specific carbon isotopes as a palaeoproductivity proxy off the coast of Adélie Land, East Antarctica Ashley, Kate E. Crosta, Xavier Etourneau, Johan Campagne, Philippine Gilchrist, Harry Ibraheem, Uthmaan Greene, Sarah, E Schmidt, Sabine Eley, Yvette Massé, Guillaume Bendle, James School of Geography, Earth and Environmental Sciences Birmingham University of Birmingham Birmingham Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) École Pratique des Hautes Études (EPHE) Université Paris Sciences et Lettres (PSL) Takuvik International Research Laboratory Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) Variabilité de l'Océan et de la Glace de mer (VOG) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) ANR CLIMICE European Project: 203441,EC:FP7:ERC,ERC-2007-StG,ICEPROXY(2008) 2021-10-14 https://hal.science/hal-03378695 https://hal.science/hal-03378695/document https://hal.science/hal-03378695/file/Ashley_BG2021.pdf https://doi.org/10.5194/bg-18-5555-2021 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-18-5555-2021 info:eu-repo/grantAgreement/EC/FP7/203441/EU/Novel Lipid Biomarkers from Polar Ice: Climatic and Ecological Applications./ICEPROXY hal-03378695 https://hal.science/hal-03378695 https://hal.science/hal-03378695/document https://hal.science/hal-03378695/file/Ashley_BG2021.pdf doi:10.5194/bg-18-5555-2021 WOS: 000709151400001 info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-03378695 Biogeosciences, 2021, pp.5555-5571. ⟨10.5194/bg-18-5555-2021⟩ [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2021 ftsorbonneuniv https://doi.org/10.5194/bg-18-5555-2021 2024-04-25T03:57:14Z International audience The Antarctic coastal zone is an area of high primary productivity, particularly within coastal polynyas, where large phytoplankton blooms and drawdown of CO 2 occur. Reconstruction of historical primary productivity changes and the associated driving factors could provide baseline insights on the role of these areas as sinks for atmospheric CO 2 , especially in the context of projected changes in coastal Antarctic sea ice. Here we investigate the potential for using carbon isotopes (δ 13 C) of fatty acids in marine sediments as a proxy for primary productivity. We use a highly resolved sediment core from off the coast of Adélie Land spanning the last ∼ 400 years and monitor changes in the concentrations and δ 13 C of fatty acids along with other proxy data from the same core. We discuss the different possible drivers of their variability and argue that C 24 fatty acid δ 13 C predominantly reflects phytoplankton productivity in openwater environments, while C 18 fatty acid δ 13 C reflects productivity in the marginal ice zone. These new proxies have implications for better understanding carbon cycle dynamics in the Antarctica coastal zone in future palaeoclimate studies. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Sea ice HAL Sorbonne Université Biogeosciences 18 19 5555 5571 |