Eddy-induced reduction of biological production in eastern boundary upwelling systems.
International audience Eddies and other mesoscale oceanic processes, such as fronts, can enhance biological production in the ocean, according to several open-ocean studies. The effect is thought to be particularly pronounced in low-nutrient environments, where mesoscale processes increase the net u...
Published in: | Nature Geoscience |
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Main Authors: | , , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2011
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Online Access: | https://hal.science/hal-00766453 https://doi.org/10.1038/ngeo1273 |
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Institut national des sciences de l'Univers: HAL-INSU |
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English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
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[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Gruber, Nicolas Lachkar, Zouhair Frenzel, Hartmut Marchesiello, Patrick Munnich, Matthias Mcwilliams, James C. Nagai, Takeyoshi Plattner, Gian-Kasper Eddy-induced reduction of biological production in eastern boundary upwelling systems. |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Eddies and other mesoscale oceanic processes, such as fronts, can enhance biological production in the ocean, according to several open-ocean studies. The effect is thought to be particularly pronounced in low-nutrient environments, where mesoscale processes increase the net upward flux of limiting nutrients. However, eddies have been suggested to suppress production in the highly productive eastern boundary upwelling systems. Here, we examine the relationship between satellite-derived estimates of net primary production, of upwelling strength, and of eddy-kinetic energy--a measure of the intensity of mesoscale activity--in the four most productive eastern boundary upwelling systems. We show that high levels of eddy activity tend to be associated with low levels of biological production, indicative of a suppressive effect. Simulations using eddy-resolving models of two of these upwelling systems support the suggestion that eddies suppress production, and show that the downward export of organic matter is also reduced. According to these simulations, the reduction in production and export results from an eddy-induced transport of nutrients from the nearshore environment to the open ocean. Eddies might have a similar effect on marine productivity in other oceanic systems that are characterized by intense eddy activity, such as the Southern Ocean. |
author2 |
Institute of Geophysics and Planetary Physics Los Angeles (IGPP) University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) Institut Pierre-Simon-Laplace (IPSL) 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)-Université Pierre et Marie Curie - Paris 6 (UPMC)-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)-Centre National de la Recherche Scientifique (CNRS) Echanges Côte-Large (ECOLA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Gruber, Nicolas Lachkar, Zouhair Frenzel, Hartmut Marchesiello, Patrick Munnich, Matthias Mcwilliams, James C. Nagai, Takeyoshi Plattner, Gian-Kasper |
author_facet |
Gruber, Nicolas Lachkar, Zouhair Frenzel, Hartmut Marchesiello, Patrick Munnich, Matthias Mcwilliams, James C. Nagai, Takeyoshi Plattner, Gian-Kasper |
author_sort |
Gruber, Nicolas |
title |
Eddy-induced reduction of biological production in eastern boundary upwelling systems. |
title_short |
Eddy-induced reduction of biological production in eastern boundary upwelling systems. |
title_full |
Eddy-induced reduction of biological production in eastern boundary upwelling systems. |
title_fullStr |
Eddy-induced reduction of biological production in eastern boundary upwelling systems. |
title_full_unstemmed |
Eddy-induced reduction of biological production in eastern boundary upwelling systems. |
title_sort |
eddy-induced reduction of biological production in eastern boundary upwelling systems. |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00766453 https://doi.org/10.1038/ngeo1273 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 1752-0894 Nature Geoscience https://hal.science/hal-00766453 Nature Geoscience, 2011, 4, pp.787-792. ⟨10.1038/ngeo1273⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/ngeo1273 hal-00766453 https://hal.science/hal-00766453 doi:10.1038/ngeo1273 |
op_doi |
https://doi.org/10.1038/ngeo1273 |
container_title |
Nature Geoscience |
container_volume |
4 |
container_issue |
11 |
container_start_page |
787 |
op_container_end_page |
792 |
_version_ |
1797570555079032832 |
spelling |
ftinsu:oai:HAL:hal-00766453v1 2024-04-28T08:39:36+00:00 Eddy-induced reduction of biological production in eastern boundary upwelling systems. Gruber, Nicolas Lachkar, Zouhair Frenzel, Hartmut Marchesiello, Patrick Munnich, Matthias Mcwilliams, James C. Nagai, Takeyoshi Plattner, Gian-Kasper Institute of Geophysics and Planetary Physics Los Angeles (IGPP) University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) Institut Pierre-Simon-Laplace (IPSL) 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)-Université Pierre et Marie Curie - Paris 6 (UPMC)-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)-Centre National de la Recherche Scientifique (CNRS) Echanges Côte-Large (ECOLA) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 2011-10-02 https://hal.science/hal-00766453 https://doi.org/10.1038/ngeo1273 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/ngeo1273 hal-00766453 https://hal.science/hal-00766453 doi:10.1038/ngeo1273 ISSN: 1752-0894 Nature Geoscience https://hal.science/hal-00766453 Nature Geoscience, 2011, 4, pp.787-792. ⟨10.1038/ngeo1273⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2011 ftinsu https://doi.org/10.1038/ngeo1273 2024-04-05T00:21:12Z International audience Eddies and other mesoscale oceanic processes, such as fronts, can enhance biological production in the ocean, according to several open-ocean studies. The effect is thought to be particularly pronounced in low-nutrient environments, where mesoscale processes increase the net upward flux of limiting nutrients. However, eddies have been suggested to suppress production in the highly productive eastern boundary upwelling systems. Here, we examine the relationship between satellite-derived estimates of net primary production, of upwelling strength, and of eddy-kinetic energy--a measure of the intensity of mesoscale activity--in the four most productive eastern boundary upwelling systems. We show that high levels of eddy activity tend to be associated with low levels of biological production, indicative of a suppressive effect. Simulations using eddy-resolving models of two of these upwelling systems support the suggestion that eddies suppress production, and show that the downward export of organic matter is also reduced. According to these simulations, the reduction in production and export results from an eddy-induced transport of nutrients from the nearshore environment to the open ocean. Eddies might have a similar effect on marine productivity in other oceanic systems that are characterized by intense eddy activity, such as the Southern Ocean. Article in Journal/Newspaper Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Nature Geoscience 4 11 787 792 |