Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean
International audience Concentrations of a highly branched isoprenoid (HBI) diene determined in over 200 sediment samples from the Arctic co-vary with those of an HBI monoene (IP 25) shown previously to be a sedimentary sea ice proxy for the Arctic. The same diene, but not monoene IP 25 , occurred i...
Published in: | Antarctic Science |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2011
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Online Access: | https://hal.science/hal-02105653 https://doi.org/10.1017/S0954102011000381 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
diatoms polyunsaturates 13 C isotopes IP 25 HBI Adélie Land [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
diatoms polyunsaturates 13 C isotopes IP 25 HBI Adélie Land [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Massé, Guillaume Belt, Simon T. Crosta, Xavier Schmidt, Sabine Snape, Ian Thomas, David N. Rowland, Steven J. Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean |
topic_facet |
diatoms polyunsaturates 13 C isotopes IP 25 HBI Adélie Land [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Concentrations of a highly branched isoprenoid (HBI) diene determined in over 200 sediment samples from the Arctic co-vary with those of an HBI monoene (IP 25) shown previously to be a sedimentary sea ice proxy for the Arctic. The same diene, but not monoene IP 25 , occurred in nine sea ice samples collected from various locations around Antarctica. The diene has been reported previously in Antarctic sea ice diatoms and the 13 C isotopic compositions of the diene determined in two Antarctic sea ice samples were also consistent with an origin from sea ice diatoms (d 13 C-5.7 to-8.5%). In contrast, HBIs found in two Antarctic phytoplankton samples did not include the diene but comprised a number of tri-to pentaenes. In sediment samples collected near Adélie Land, East Antarctica, both the diene and the tri-to pentaenes often co-occurred. 13 C isotopic compositions of the tri-to pentaenes in three sediment samples ranged from-35 to-42% whereas that of the diene in a sediment sample was-18%. We propose the presence of this isotopically 13 C enriched HBI diene in Antarctic sediments to be a useful proxy indicator for contributions of organic matter derived from sea ice diatoms. A ratio of the concentrations of diene/ trienes might reflect the relative contributions of sea ice to phytoplanktonic inputs of organic matter to Antarctic sediments. |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Biogeochemistry Research Centre (BGC) Plymouth University 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) School of Ocean Sciences Menai Bridge Bangor University |
format |
Article in Journal/Newspaper |
author |
Massé, Guillaume Belt, Simon T. Crosta, Xavier Schmidt, Sabine Snape, Ian Thomas, David N. Rowland, Steven J. |
author_facet |
Massé, Guillaume Belt, Simon T. Crosta, Xavier Schmidt, Sabine Snape, Ian Thomas, David N. Rowland, Steven J. |
author_sort |
Massé, Guillaume |
title |
Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean |
title_short |
Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean |
title_full |
Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean |
title_fullStr |
Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean |
title_full_unstemmed |
Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean |
title_sort |
highly branched isoprenoids as proxies for variable sea ice conditions in the southern ocean |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-02105653 https://doi.org/10.1017/S0954102011000381 |
genre |
Antarc* Antarctic Antarctic Science Antarctica Arctic East Antarctica Phytoplankton Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Arctic East Antarctica Phytoplankton Sea ice Southern Ocean |
op_source |
ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.science/hal-02105653 Antarctic Science, 2011, 23 (05), pp.487-498. ⟨10.1017/S0954102011000381⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102011000381 hal-02105653 https://hal.science/hal-02105653 doi:10.1017/S0954102011000381 |
op_doi |
https://doi.org/10.1017/S0954102011000381 |
container_title |
Antarctic Science |
container_volume |
23 |
container_issue |
5 |
container_start_page |
487 |
op_container_end_page |
498 |
_version_ |
1797573576633614336 |
spelling |
ftinsu:oai:HAL:hal-02105653v1 2024-04-28T08:02:06+00:00 Highly branched isoprenoids as proxies for variable sea ice conditions in the Southern Ocean Massé, Guillaume Belt, Simon T. Crosta, Xavier Schmidt, Sabine Snape, Ian Thomas, David N. Rowland, Steven J. Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-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)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Biogeochemistry Research Centre (BGC) Plymouth University 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) School of Ocean Sciences Menai Bridge Bangor University 2011-10 https://hal.science/hal-02105653 https://doi.org/10.1017/S0954102011000381 en eng HAL CCSD Cambridge University Press (CUP) info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102011000381 hal-02105653 https://hal.science/hal-02105653 doi:10.1017/S0954102011000381 ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.science/hal-02105653 Antarctic Science, 2011, 23 (05), pp.487-498. ⟨10.1017/S0954102011000381⟩ diatoms polyunsaturates 13 C isotopes IP 25 HBI Adélie Land [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2011 ftinsu https://doi.org/10.1017/S0954102011000381 2024-04-05T00:44:04Z International audience Concentrations of a highly branched isoprenoid (HBI) diene determined in over 200 sediment samples from the Arctic co-vary with those of an HBI monoene (IP 25) shown previously to be a sedimentary sea ice proxy for the Arctic. The same diene, but not monoene IP 25 , occurred in nine sea ice samples collected from various locations around Antarctica. The diene has been reported previously in Antarctic sea ice diatoms and the 13 C isotopic compositions of the diene determined in two Antarctic sea ice samples were also consistent with an origin from sea ice diatoms (d 13 C-5.7 to-8.5%). In contrast, HBIs found in two Antarctic phytoplankton samples did not include the diene but comprised a number of tri-to pentaenes. In sediment samples collected near Adélie Land, East Antarctica, both the diene and the tri-to pentaenes often co-occurred. 13 C isotopic compositions of the tri-to pentaenes in three sediment samples ranged from-35 to-42% whereas that of the diene in a sediment sample was-18%. We propose the presence of this isotopically 13 C enriched HBI diene in Antarctic sediments to be a useful proxy indicator for contributions of organic matter derived from sea ice diatoms. A ratio of the concentrations of diene/ trienes might reflect the relative contributions of sea ice to phytoplanktonic inputs of organic matter to Antarctic sediments. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Arctic East Antarctica Phytoplankton Sea ice Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Antarctic Science 23 5 487 498 |