Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years
International audience Oxygen minimum zones (OMZ) have expanded in all tropical oceans during the last 50 years resulting in habitat contraction and considerable changes in marine biogeochemistry. However, for a better understanding of the OMZ dynamics under the current climate change, two questions...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2016
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Online Access: | https://doi.org/10.1016/j.quascirev.2015.10.044 https://hal.sorbonne-universite.fr/hal-01235970/file/Salvatteci_2016_Centennial_to.pdf https://hal.sorbonne-universite.fr/hal-01235970 |
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openpolar |
institution |
Open Polar |
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language |
English |
topic |
oxygen minimum zone denitrification paleoceanography 20 21 Peruvian 19 upwelling ecosystem redox sensitive metals envir geo |
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oxygen minimum zone denitrification paleoceanography 20 21 Peruvian 19 upwelling ecosystem redox sensitive metals envir geo Salvatteci, Renato Gutiérrez, Dimitri Sifeddine, Abdelfettah Ortlieb, Luc Druffel, E. Boussafir, Mohammed Schneider, R. Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years |
topic_facet |
oxygen minimum zone denitrification paleoceanography 20 21 Peruvian 19 upwelling ecosystem redox sensitive metals envir geo |
description |
International audience Oxygen minimum zones (OMZ) have expanded in all tropical oceans during the last 50 years resulting in habitat contraction and considerable changes in marine biogeochemistry. However, for a better understanding of the OMZ dynamics under the current climate change, two questions are relevant: 1) how do the magnitude and temporal changes in oceanic dissolved oxygen of the last few decades compare to the natural variability on longer timescales, and 2) what were the local and remote factors driving OMZ changes in the past. In the present study we use a stacked record covering the last 25 kyr from the Eastern Tropical South Pacific (ETSP) OMZ to reconstruct changes in oxygenation and productivity. We use a suite of proxies including the presence of laminations, redox sensitive metals (U, Mo, Re, Ni and Cu), total organic carbon and δ15N measurements. Water column denitrification and sediment redox conditions show pronounced centennial to millennial-scale variability during the last 25 kyr, with oxygenation levels as low as at present. Global cold periods at different timescales such as the Last Glacial Maximum (23–19 kyr BP) and the Little Ice Age (1500–1850 AD) were associated with a weak OMZ and low export production, while warm intervals such as the deglaciation, part of the Medieval Climate Anomaly and the last 100 years are associated with a stronger OMZ and high export production. Water column denitrification and sediment redox conditions were strongly coupled during the last 25 kyr BP apart from one remarkable exception: during the Antarctic Cold Reversal, sediments were less reducing but the water column denitrification was high resulting in a strong but shallow OMZ. This may have been produced by an enhanced Antarctic Intermediate Water flow. Contrary to our expectations and modeling predictions for the next few decades, we observe a weak ETSP-OMZ during the warm mid-Holocene, which may have been the result of a stronger Walker Circulation that brought oxygen-rich waters to ... |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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 Paris) 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) Institute of Geosciences Kiel Christian-Albrechts-Universität zu Kiel (CAU) Instituto del Mar del Peru (IMARPE) Programa Maestría en Ciencias Del Mar Biogéochimie-Traceurs-Paléoclimat (BTP) 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)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Departamento de Geoquimica Universidade Federal Fluminense (DEPARTAMENTO DE GEOQUIMICA) Universidade Federal do Rio de Janeiro (UFRJ) Department of Earth System Science Irvine (ESS) University of California Irvine (UCI) University of California-University of California Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM) Biogéosystèmes Continentaux - UMR7327 Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC) |
format |
Article in Journal/Newspaper |
author |
Salvatteci, Renato Gutiérrez, Dimitri Sifeddine, Abdelfettah Ortlieb, Luc Druffel, E. Boussafir, Mohammed Schneider, R. |
author_facet |
Salvatteci, Renato Gutiérrez, Dimitri Sifeddine, Abdelfettah Ortlieb, Luc Druffel, E. Boussafir, Mohammed Schneider, R. |
author_sort |
Salvatteci, Renato |
title |
Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years |
title_short |
Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years |
title_full |
Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years |
title_fullStr |
Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years |
title_full_unstemmed |
Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years |
title_sort |
centennial to millennial-scale changes in oxygenation and productivity in the eastern tropical south pacific during the last 25,000 years |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://doi.org/10.1016/j.quascirev.2015.10.044 https://hal.sorbonne-universite.fr/hal-01235970/file/Salvatteci_2016_Centennial_to.pdf https://hal.sorbonne-universite.fr/hal-01235970 |
geographic |
Antarctic Pacific The Antarctic |
geographic_facet |
Antarctic Pacific The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0277-3791 Quaternary Science Reviews Quaternary Science Reviews, Elsevier, 2016, 131 (Part A), pp.102-117. ⟨10.1016/j.quascirev.2015.10.044⟩ |
op_relation |
hal-01235970 doi:10.1016/j.quascirev.2015.10.044 IRD: fdi:010066086 10670/1.h2m5nw https://hal.sorbonne-universite.fr/hal-01235970/file/Salvatteci_2016_Centennial_to.pdf https://hal.sorbonne-universite.fr/hal-01235970 |
op_rights |
other |
op_doi |
https://doi.org/10.1016/j.quascirev.2015.10.044 |
container_title |
Quaternary Science Reviews |
container_volume |
131 |
container_start_page |
102 |
op_container_end_page |
117 |
_version_ |
1766254999820566528 |
spelling |
fttriple:oai:gotriple.eu:10670/1.h2m5nw 2023-05-15T13:51:14+02:00 Centennial to millennial-scale changes in oxygenation and productivity in the Eastern Tropical South Pacific during the last 25,000 years Salvatteci, Renato Gutiérrez, Dimitri Sifeddine, Abdelfettah Ortlieb, Luc Druffel, E. Boussafir, Mohammed Schneider, R. Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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 Paris) 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) Institute of Geosciences Kiel Christian-Albrechts-Universität zu Kiel (CAU) Instituto del Mar del Peru (IMARPE) Programa Maestría en Ciencias Del Mar Biogéochimie-Traceurs-Paléoclimat (BTP) 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)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Departamento de Geoquimica Universidade Federal Fluminense (DEPARTAMENTO DE GEOQUIMICA) Universidade Federal do Rio de Janeiro (UFRJ) Department of Earth System Science Irvine (ESS) University of California Irvine (UCI) University of California-University of California Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO) Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM) Biogéosystèmes Continentaux - UMR7327 Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC) 2016-01-01 https://doi.org/10.1016/j.quascirev.2015.10.044 https://hal.sorbonne-universite.fr/hal-01235970/file/Salvatteci_2016_Centennial_to.pdf https://hal.sorbonne-universite.fr/hal-01235970 en eng HAL CCSD Elsevier hal-01235970 doi:10.1016/j.quascirev.2015.10.044 IRD: fdi:010066086 10670/1.h2m5nw https://hal.sorbonne-universite.fr/hal-01235970/file/Salvatteci_2016_Centennial_to.pdf https://hal.sorbonne-universite.fr/hal-01235970 other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0277-3791 Quaternary Science Reviews Quaternary Science Reviews, Elsevier, 2016, 131 (Part A), pp.102-117. ⟨10.1016/j.quascirev.2015.10.044⟩ oxygen minimum zone denitrification paleoceanography 20 21 Peruvian 19 upwelling ecosystem redox sensitive metals envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.1016/j.quascirev.2015.10.044 2023-01-22T17:57:10Z International audience Oxygen minimum zones (OMZ) have expanded in all tropical oceans during the last 50 years resulting in habitat contraction and considerable changes in marine biogeochemistry. However, for a better understanding of the OMZ dynamics under the current climate change, two questions are relevant: 1) how do the magnitude and temporal changes in oceanic dissolved oxygen of the last few decades compare to the natural variability on longer timescales, and 2) what were the local and remote factors driving OMZ changes in the past. In the present study we use a stacked record covering the last 25 kyr from the Eastern Tropical South Pacific (ETSP) OMZ to reconstruct changes in oxygenation and productivity. We use a suite of proxies including the presence of laminations, redox sensitive metals (U, Mo, Re, Ni and Cu), total organic carbon and δ15N measurements. Water column denitrification and sediment redox conditions show pronounced centennial to millennial-scale variability during the last 25 kyr, with oxygenation levels as low as at present. Global cold periods at different timescales such as the Last Glacial Maximum (23–19 kyr BP) and the Little Ice Age (1500–1850 AD) were associated with a weak OMZ and low export production, while warm intervals such as the deglaciation, part of the Medieval Climate Anomaly and the last 100 years are associated with a stronger OMZ and high export production. Water column denitrification and sediment redox conditions were strongly coupled during the last 25 kyr BP apart from one remarkable exception: during the Antarctic Cold Reversal, sediments were less reducing but the water column denitrification was high resulting in a strong but shallow OMZ. This may have been produced by an enhanced Antarctic Intermediate Water flow. Contrary to our expectations and modeling predictions for the next few decades, we observe a weak ETSP-OMZ during the warm mid-Holocene, which may have been the result of a stronger Walker Circulation that brought oxygen-rich waters to ... Article in Journal/Newspaper Antarc* Antarctic Unknown Antarctic Pacific The Antarctic Quaternary Science Reviews 131 102 117 |