Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands
International audience Mesopelagic communities are characterized by a large biomass of diverse macrozooplankton and micronekton (MM) performing diel vertical migration (DVM) connecting the surface to the deeper ocean and contributing to biogeochemical fluxes. In the Southern Ocean, a prominent High...
Published in: | Journal of Marine Systems |
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Main Authors: | , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2022
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Subjects: | |
Online Access: | https://hal.science/hal-03405878 https://hal.science/hal-03405878/document https://hal.science/hal-03405878/file/S0924796321001457.pdf https://doi.org/10.1016/j.jmarsys.2021.103650 |
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ftinsu:oai:HAL:hal-03405878v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Macrozooplankton Micronekton Vertical patterns Active carbon flux Spatio-temporal variability Scattering layers Kerguelen Plateau Southern Ocean [SDE]Environmental Sciences |
spellingShingle |
Macrozooplankton Micronekton Vertical patterns Active carbon flux Spatio-temporal variability Scattering layers Kerguelen Plateau Southern Ocean [SDE]Environmental Sciences Cotté, Cédric Ariza, A. Berne, Adrien Habasque, J. Lebourges-Dhaussy, Anne Roudaut, G. Espinasse, B. Hunt, B.P.V. Pakhomov, E.A. Henschke, N. Péron, Clara Conchon, Anna Koedooder, C. Izard, Lloyd Cherel, Yves Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands |
topic_facet |
Macrozooplankton Micronekton Vertical patterns Active carbon flux Spatio-temporal variability Scattering layers Kerguelen Plateau Southern Ocean [SDE]Environmental Sciences |
description |
International audience Mesopelagic communities are characterized by a large biomass of diverse macrozooplankton and micronekton (MM) performing diel vertical migration (DVM) connecting the surface to the deeper ocean and contributing to biogeochemical fluxes. In the Southern Ocean, a prominent High Nutrient Low Chlorophyll (HNLC) and low carbon export region, the contribution of MM to the vertical carbon flux of the biological pump remains largely unknown. Furthermore, few studies have investigated MM communities and vertical flux in naturally iron fertilized areas associated with shallow bathymetry. In this study, we assessed the MM community diversity, abundance and biomass in the Kerguelen Island region, including two stations in the HNLC region upstream of the islands, and two stations in naturally iron fertilized areas, one on the Plateau, and one downstream of the Plateau. The MM community was examined using a combination of trawl sampling and acoustic measurements at 18 and 38 kHz from the surface to 800 m. A conspicuous three-layer vertical system was observed in all areas - a shallow scattering layer, SSL, between 10 and 200 m; mid-depth scattering layer, MSL, between 200 and 500 m; deep scattering layer, DSL, between 500 and 800 m - but communities differing among stations. While salps (Salpa thompsoni) dominated the biomass at the productive Kerguelen Plateau and the downstream station, they were scarce in the HNLC upstream area. In addition, crustaceans (mainly Euphausia vallentini and Themisto gaudichaudii) were particularly abundant over the Plateau, representing a large, although varying, carbon stock in the 0–500 m water layer. Mesopelagic fish were prominent below 400 m where they formed permanent or migrant layers accounting for the main source of carbon biomass. Through these spatial and temporal sources of variability, complex patterns of the MM vertical distribution and associated carbon content were identified. The total carbon flux mediated by migratory myctophids at the four stations ... |
author2 |
Processus et interactions de fine échelle océanique (PROTEO) 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) MARine Biodiversity Exploitation and Conservation - MARBEC (UMR MARBEC ) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) The Arctic University of Norway Tromsø, Norway (UiT) Department of Earth, Ocean and Atmospheric Sciences Vancouver (UBC EOAS) University of British Columbia (UBC) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) INSU-CNRS LEFE/CYBER (“Les enveloppes fluides et l'environnement” –”Cycles biogéochimiques, environnement et ressources”) Cnes OSTST Tosca project LAECOS ANR-17-CE01-0013,MOBYDICK,Biodiversité des Ecosystèmes Marins et Dynamique du Carbone dans le secteur de Kerguelen : approche intégrée(2017) European Project: 692173,H2020-EU.3.6.,H2020-INT-INCO-2015,MESOPP(2016) |
format |
Article in Journal/Newspaper |
author |
Cotté, Cédric Ariza, A. Berne, Adrien Habasque, J. Lebourges-Dhaussy, Anne Roudaut, G. Espinasse, B. Hunt, B.P.V. Pakhomov, E.A. Henschke, N. Péron, Clara Conchon, Anna Koedooder, C. Izard, Lloyd Cherel, Yves |
author_facet |
Cotté, Cédric Ariza, A. Berne, Adrien Habasque, J. Lebourges-Dhaussy, Anne Roudaut, G. Espinasse, B. Hunt, B.P.V. Pakhomov, E.A. Henschke, N. Péron, Clara Conchon, Anna Koedooder, C. Izard, Lloyd Cherel, Yves |
author_sort |
Cotté, Cédric |
title |
Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands |
title_short |
Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands |
title_full |
Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands |
title_fullStr |
Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands |
title_full_unstemmed |
Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands |
title_sort |
macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the kerguelen islands |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03405878 https://hal.science/hal-03405878/document https://hal.science/hal-03405878/file/S0924796321001457.pdf https://doi.org/10.1016/j.jmarsys.2021.103650 |
genre |
Kerguelen Islands Southern Ocean |
genre_facet |
Kerguelen Islands Southern Ocean |
op_source |
ISSN: 0924-7963 Journal of Marine Systems https://hal.science/hal-03405878 Journal of Marine Systems, 2022, 226, pp.103650. ⟨10.1016/j.jmarsys.2021.103650⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmarsys.2021.103650 info:eu-repo/grantAgreement//692173/EU/Mesopelagic Southern Ocean Prey and Predators/MESOPP hal-03405878 https://hal.science/hal-03405878 https://hal.science/hal-03405878/document https://hal.science/hal-03405878/file/S0924796321001457.pdf doi:10.1016/j.jmarsys.2021.103650 IRD: fdi:010083336 PII: S0924-7963(21)00145-7 WOS: 000714510000003 |
op_rights |
http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.jmarsys.2021.103650 |
container_title |
Journal of Marine Systems |
container_volume |
226 |
container_start_page |
103650 |
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1796945856294813696 |
spelling |
ftinsu:oai:HAL:hal-03405878v1 2024-04-21T08:06:28+00:00 Macrozooplankton and micronekton diversity and associated carbon vertical patterns and fluxes under distinct productive conditions around the Kerguelen Islands Cotté, Cédric Ariza, A. Berne, Adrien Habasque, J. Lebourges-Dhaussy, Anne Roudaut, G. Espinasse, B. Hunt, B.P.V. Pakhomov, E.A. Henschke, N. Péron, Clara Conchon, Anna Koedooder, C. Izard, Lloyd Cherel, Yves Processus et interactions de fine échelle océanique (PROTEO) 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) MARine Biodiversity Exploitation and Conservation - MARBEC (UMR MARBEC ) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) The Arctic University of Norway Tromsø, Norway (UiT) Department of Earth, Ocean and Atmospheric Sciences Vancouver (UBC EOAS) University of British Columbia (UBC) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) INSU-CNRS LEFE/CYBER (“Les enveloppes fluides et l'environnement” –”Cycles biogéochimiques, environnement et ressources”) Cnes OSTST Tosca project LAECOS ANR-17-CE01-0013,MOBYDICK,Biodiversité des Ecosystèmes Marins et Dynamique du Carbone dans le secteur de Kerguelen : approche intégrée(2017) European Project: 692173,H2020-EU.3.6.,H2020-INT-INCO-2015,MESOPP(2016) 2022-02 https://hal.science/hal-03405878 https://hal.science/hal-03405878/document https://hal.science/hal-03405878/file/S0924796321001457.pdf https://doi.org/10.1016/j.jmarsys.2021.103650 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmarsys.2021.103650 info:eu-repo/grantAgreement//692173/EU/Mesopelagic Southern Ocean Prey and Predators/MESOPP hal-03405878 https://hal.science/hal-03405878 https://hal.science/hal-03405878/document https://hal.science/hal-03405878/file/S0924796321001457.pdf doi:10.1016/j.jmarsys.2021.103650 IRD: fdi:010083336 PII: S0924-7963(21)00145-7 WOS: 000714510000003 http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess ISSN: 0924-7963 Journal of Marine Systems https://hal.science/hal-03405878 Journal of Marine Systems, 2022, 226, pp.103650. ⟨10.1016/j.jmarsys.2021.103650⟩ Macrozooplankton Micronekton Vertical patterns Active carbon flux Spatio-temporal variability Scattering layers Kerguelen Plateau Southern Ocean [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.1016/j.jmarsys.2021.103650 2024-04-05T00:27:42Z International audience Mesopelagic communities are characterized by a large biomass of diverse macrozooplankton and micronekton (MM) performing diel vertical migration (DVM) connecting the surface to the deeper ocean and contributing to biogeochemical fluxes. In the Southern Ocean, a prominent High Nutrient Low Chlorophyll (HNLC) and low carbon export region, the contribution of MM to the vertical carbon flux of the biological pump remains largely unknown. Furthermore, few studies have investigated MM communities and vertical flux in naturally iron fertilized areas associated with shallow bathymetry. In this study, we assessed the MM community diversity, abundance and biomass in the Kerguelen Island region, including two stations in the HNLC region upstream of the islands, and two stations in naturally iron fertilized areas, one on the Plateau, and one downstream of the Plateau. The MM community was examined using a combination of trawl sampling and acoustic measurements at 18 and 38 kHz from the surface to 800 m. A conspicuous three-layer vertical system was observed in all areas - a shallow scattering layer, SSL, between 10 and 200 m; mid-depth scattering layer, MSL, between 200 and 500 m; deep scattering layer, DSL, between 500 and 800 m - but communities differing among stations. While salps (Salpa thompsoni) dominated the biomass at the productive Kerguelen Plateau and the downstream station, they were scarce in the HNLC upstream area. In addition, crustaceans (mainly Euphausia vallentini and Themisto gaudichaudii) were particularly abundant over the Plateau, representing a large, although varying, carbon stock in the 0–500 m water layer. Mesopelagic fish were prominent below 400 m where they formed permanent or migrant layers accounting for the main source of carbon biomass. Through these spatial and temporal sources of variability, complex patterns of the MM vertical distribution and associated carbon content were identified. The total carbon flux mediated by migratory myctophids at the four stations ... Article in Journal/Newspaper Kerguelen Islands Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Journal of Marine Systems 226 103650 |