First description of in situ chlorophyll fluorescence signal within East Antarctic coastal polynyas during fall and winter
International audience Antarctic coastal polynyas are persistent and recurrent regions of open water located between the coast and the drifting pack-ice. In spring, they are the first polar areas to be exposed to light, leading to the development of phytoplankton blooms, making polynyas potential ec...
Published in: | Frontiers in Marine Science |
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Main Authors: | , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2023
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Subjects: | |
Online Access: | https://hal.science/hal-04174778 https://hal.science/hal-04174778/document https://hal.science/hal-04174778/file/BFMS10_2023.pdf https://doi.org/10.3389/fmars.2023.1186403 |
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ftunivrochelle:oai:HAL:hal-04174778v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
sea ice Antarctic polynya biotelemetry chlorophyll-a CTD sea ice Antarctic polynya biotelemetry chlorophyll-a CTD [SDE]Environmental Sciences |
spellingShingle |
sea ice Antarctic polynya biotelemetry chlorophyll-a CTD sea ice Antarctic polynya biotelemetry chlorophyll-a CTD [SDE]Environmental Sciences Bourreau, Lucie Pauthenet, Etienne Le Ster, Loïc Picard, Baptiste Portela, Esther Sallée, Jean-Baptiste Mcmahon, Clive, R Harcourt, Robert Hindell, Mark Guinet, Christophe Bestley, Sophie Charrassin, Jean-Benoit Duvivier, Alice Sylvester, Zephyr Krumhardt, Kristen Jenouvrier, Stéphanie Labrousse, Sara First description of in situ chlorophyll fluorescence signal within East Antarctic coastal polynyas during fall and winter |
topic_facet |
sea ice Antarctic polynya biotelemetry chlorophyll-a CTD sea ice Antarctic polynya biotelemetry chlorophyll-a CTD [SDE]Environmental Sciences |
description |
International audience Antarctic coastal polynyas are persistent and recurrent regions of open water located between the coast and the drifting pack-ice. In spring, they are the first polar areas to be exposed to light, leading to the development of phytoplankton blooms, making polynyas potential ecological hotspots in sea-ice regions. Knowledge on polynya oceanography and ecology during winter is limited due to their inaccessibility. This study describes i) the first in situ chlorophyll fluorescence signal (a proxy for chlorophyll-a concentration and thus presence of phytoplankton) in polynyas between the end of summer and winter, ii) assesses whether the signal persists through time and iii) identifies its main oceanographic drivers. The dataset comprises 698 profiles of fluorescence, temperature and salinity recorded by southern elephant seals in 2011, 2019-2021 in the Cape-Darnley (CDP;67˚S-69˚E) and Shackleton (SP;66˚S-95˚E) polynyas between February and September. A significant fluorescence signal was observed until April in both polynyas. An additional signal occurring at 130m depth in August within CDP may result from in situ growth of phytoplankton due to potential adaptation to low irradiance or remnant chlorophyll-a that was advected into the polynya. The decrease and deepening of the fluorescence signal from February to August was accompanied by the deepening of the mixed layer depth and a cooling and salinification of the water column in both polynyas. Using Principal Component Analysis as an exploratory tool, we highlighted previously unsuspected drivers of the fluorescence signal within polynyas. CDP shows clear differences in biological and environmental conditions depending on topographic features with higher fluorescence in warmer and saltier waters on the shelf compared with the continental slope. In SP, near the ice-shelf, a significant fluorescence signal in April below the mixed layer (around 130m depth), was associated with fresher and warmer waters. We hypothesize that this signal could ... |
author2 |
Woods Hole Oceanographic Institution (WHOI) 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) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-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) Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) IMOS Animal Tagging New South Wales, Australia Sydney Institute of Marine Science School of Natural Sciences Australia Macquarie University Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart, Australia (UTAS) Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO 80307-3000, USA Environmental Studies Program University of Colorado Boulder |
format |
Article in Journal/Newspaper |
author |
Bourreau, Lucie Pauthenet, Etienne Le Ster, Loïc Picard, Baptiste Portela, Esther Sallée, Jean-Baptiste Mcmahon, Clive, R Harcourt, Robert Hindell, Mark Guinet, Christophe Bestley, Sophie Charrassin, Jean-Benoit Duvivier, Alice Sylvester, Zephyr Krumhardt, Kristen Jenouvrier, Stéphanie Labrousse, Sara |
author_facet |
Bourreau, Lucie Pauthenet, Etienne Le Ster, Loïc Picard, Baptiste Portela, Esther Sallée, Jean-Baptiste Mcmahon, Clive, R Harcourt, Robert Hindell, Mark Guinet, Christophe Bestley, Sophie Charrassin, Jean-Benoit Duvivier, Alice Sylvester, Zephyr Krumhardt, Kristen Jenouvrier, Stéphanie Labrousse, Sara |
author_sort |
Bourreau, Lucie |
title |
First description of in situ chlorophyll fluorescence signal within East Antarctic coastal polynyas during fall and winter |
title_short |
First description of in situ chlorophyll fluorescence signal within East Antarctic coastal polynyas during fall and winter |
title_full |
First description of in situ chlorophyll fluorescence signal within East Antarctic coastal polynyas during fall and winter |
title_fullStr |
First description of in situ chlorophyll fluorescence signal within East Antarctic coastal polynyas during fall and winter |
title_full_unstemmed |
First description of in situ chlorophyll fluorescence signal within East Antarctic coastal polynyas during fall and winter |
title_sort |
first description of in situ chlorophyll fluorescence signal within east antarctic coastal polynyas during fall and winter |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04174778 https://hal.science/hal-04174778/document https://hal.science/hal-04174778/file/BFMS10_2023.pdf https://doi.org/10.3389/fmars.2023.1186403 |
genre |
Antarc* Antarctic Elephant Seals Ice Shelf Sea ice Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Elephant Seals Ice Shelf Sea ice Southern Elephant Seals |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-04174778 Frontiers in Marine Science, 2023, 10, pp.1186403. ⟨10.3389/fmars.2023.1186403⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2023.1186403 hal-04174778 https://hal.science/hal-04174778 https://hal.science/hal-04174778/document https://hal.science/hal-04174778/file/BFMS10_2023.pdf doi:10.3389/fmars.2023.1186403 IRD: fdi:010090180 WOS: 001047914400001 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmars.2023.1186403 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
_version_ |
1799469667688906752 |
spelling |
ftunivrochelle:oai:HAL:hal-04174778v1 2024-05-19T07:31:47+00:00 First description of in situ chlorophyll fluorescence signal within East Antarctic coastal polynyas during fall and winter Bourreau, Lucie Pauthenet, Etienne Le Ster, Loïc Picard, Baptiste Portela, Esther Sallée, Jean-Baptiste Mcmahon, Clive, R Harcourt, Robert Hindell, Mark Guinet, Christophe Bestley, Sophie Charrassin, Jean-Benoit Duvivier, Alice Sylvester, Zephyr Krumhardt, Kristen Jenouvrier, Stéphanie Labrousse, Sara Woods Hole Oceanographic Institution (WHOI) 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) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-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) Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) IMOS Animal Tagging New South Wales, Australia Sydney Institute of Marine Science School of Natural Sciences Australia Macquarie University Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart, Australia (UTAS) Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO 80307-3000, USA Environmental Studies Program University of Colorado Boulder 2023-07-27 https://hal.science/hal-04174778 https://hal.science/hal-04174778/document https://hal.science/hal-04174778/file/BFMS10_2023.pdf https://doi.org/10.3389/fmars.2023.1186403 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2023.1186403 hal-04174778 https://hal.science/hal-04174778 https://hal.science/hal-04174778/document https://hal.science/hal-04174778/file/BFMS10_2023.pdf doi:10.3389/fmars.2023.1186403 IRD: fdi:010090180 WOS: 001047914400001 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-04174778 Frontiers in Marine Science, 2023, 10, pp.1186403. ⟨10.3389/fmars.2023.1186403⟩ sea ice Antarctic polynya biotelemetry chlorophyll-a CTD sea ice Antarctic polynya biotelemetry chlorophyll-a CTD [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2023 ftunivrochelle https://doi.org/10.3389/fmars.2023.1186403 2024-04-24T00:36:21Z International audience Antarctic coastal polynyas are persistent and recurrent regions of open water located between the coast and the drifting pack-ice. In spring, they are the first polar areas to be exposed to light, leading to the development of phytoplankton blooms, making polynyas potential ecological hotspots in sea-ice regions. Knowledge on polynya oceanography and ecology during winter is limited due to their inaccessibility. This study describes i) the first in situ chlorophyll fluorescence signal (a proxy for chlorophyll-a concentration and thus presence of phytoplankton) in polynyas between the end of summer and winter, ii) assesses whether the signal persists through time and iii) identifies its main oceanographic drivers. The dataset comprises 698 profiles of fluorescence, temperature and salinity recorded by southern elephant seals in 2011, 2019-2021 in the Cape-Darnley (CDP;67˚S-69˚E) and Shackleton (SP;66˚S-95˚E) polynyas between February and September. A significant fluorescence signal was observed until April in both polynyas. An additional signal occurring at 130m depth in August within CDP may result from in situ growth of phytoplankton due to potential adaptation to low irradiance or remnant chlorophyll-a that was advected into the polynya. The decrease and deepening of the fluorescence signal from February to August was accompanied by the deepening of the mixed layer depth and a cooling and salinification of the water column in both polynyas. Using Principal Component Analysis as an exploratory tool, we highlighted previously unsuspected drivers of the fluorescence signal within polynyas. CDP shows clear differences in biological and environmental conditions depending on topographic features with higher fluorescence in warmer and saltier waters on the shelf compared with the continental slope. In SP, near the ice-shelf, a significant fluorescence signal in April below the mixed layer (around 130m depth), was associated with fresher and warmer waters. We hypothesize that this signal could ... Article in Journal/Newspaper Antarc* Antarctic Elephant Seals Ice Shelf Sea ice Southern Elephant Seals HAL - Université de La Rochelle Frontiers in Marine Science 10 |