Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada
International audience The Hudson Bay complex (HBC) is home to numerous indigenous communities that traditionally have relied heavily on its marine resources. The nutritional quality and stocks of the entire HBC food web depend in large part on the phytoplankton production of bioactive molecules (lo...
Published in: | Elementa: Science of the Anthropocene |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Subjects: | |
Online Access: | https://hal.science/hal-03775843 https://hal.science/hal-03775843/document https://hal.science/hal-03775843/file/2022f-Elementa.pdf https://doi.org/10.1525/elementa.2021.00106 |
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ftinsu:oai:HAL:hal-03775843v1 |
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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 |
Hudson Bay complex Spring phytoplankton bloom Long chain polyunsaturated fatty acids Docosahexaenoic acid Eicosapentaenoic acid Carotenoid Fucoxanthin Peridinin [SDE]Environmental Sciences [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
spellingShingle |
Hudson Bay complex Spring phytoplankton bloom Long chain polyunsaturated fatty acids Docosahexaenoic acid Eicosapentaenoic acid Carotenoid Fucoxanthin Peridinin [SDE]Environmental Sciences [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology Amiraux, Rémi Lavaud, Johann Cameron-Bergeron, Kasey Matthes, Lisa Peeken, Ilka Mundy, Christopher Babb, David Tremblay, Jean-Eric Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada |
topic_facet |
Hudson Bay complex Spring phytoplankton bloom Long chain polyunsaturated fatty acids Docosahexaenoic acid Eicosapentaenoic acid Carotenoid Fucoxanthin Peridinin [SDE]Environmental Sciences [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
description |
International audience The Hudson Bay complex (HBC) is home to numerous indigenous communities that traditionally have relied heavily on its marine resources. The nutritional quality and stocks of the entire HBC food web depend in large part on the phytoplankton production of bioactive molecules (long chain polyunsaturated fatty acids and carotenoids) and their transfer through trophic levels. The purpose of this study was thus to determine which molecules were produced during spring phytoplankton blooms, as well as the environmental factors driving this production. We investigated 21 stations in 5 sub-regions of the HBC. At the time of sampling, the sub-regions studied had different environmental settings (e.g., ice cover, nutrients, seawater salinity and temperature) conditioning their bloom stages. Pre- and post-bloom stages were associated with relatively low concentrations of bioactive molecules (either fatty acids or carotenoids). In contrast, the highest concentrations of bioactive molecules (dominated by eicosapentaenoic acid and fucoxanthin) were associated with the diatom bloom that typically occurs at the ice edge when silicates remain available. Interestingly, the large riverine inputs in eastern Hudson Bay led to a change in protist composition (larger contribution of Dinophyceae), resulting in lower while more diverse content of bioactive molecules, whether fatty acids (e.g., α-linolenic acid) or carotenoids (e.g., peridinin). As greater stratification of the HBC is expected in the future, we suggest that a mixotrophic/heterotrophic flagellate-based food web would become more prevalent, resulting in a smaller supply of bioactive molecules for the food web. |
author2 |
Takuvik International Research Laboratory Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) 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) Alfred Wegener Institute for Polar and Marine Research (AWI) Centre for Earth Observation Science Winnipeg University of Manitoba Winnipeg |
format |
Article in Journal/Newspaper |
author |
Amiraux, Rémi Lavaud, Johann Cameron-Bergeron, Kasey Matthes, Lisa Peeken, Ilka Mundy, Christopher Babb, David Tremblay, Jean-Eric |
author_facet |
Amiraux, Rémi Lavaud, Johann Cameron-Bergeron, Kasey Matthes, Lisa Peeken, Ilka Mundy, Christopher Babb, David Tremblay, Jean-Eric |
author_sort |
Amiraux, Rémi |
title |
Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada |
title_short |
Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada |
title_full |
Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada |
title_fullStr |
Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada |
title_full_unstemmed |
Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada |
title_sort |
content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in hudson bay complex, canada |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03775843 https://hal.science/hal-03775843/document https://hal.science/hal-03775843/file/2022f-Elementa.pdf https://doi.org/10.1525/elementa.2021.00106 |
geographic |
Hudson Bay Canada Hudson |
geographic_facet |
Hudson Bay Canada Hudson |
genre |
Hudson Bay Sea ice |
genre_facet |
Hudson Bay Sea ice |
op_source |
EISSN: 2325-1026 Elementa: Science of the Anthropocene https://hal.science/hal-03775843 Elementa: Science of the Anthropocene, 2022, 10 (1), pp.00106. ⟨10.1525/elementa.2021.00106⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1525/elementa.2021.00106 hal-03775843 https://hal.science/hal-03775843 https://hal.science/hal-03775843/document https://hal.science/hal-03775843/file/2022f-Elementa.pdf doi:10.1525/elementa.2021.00106 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1525/elementa.2021.00106 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
10 |
container_issue |
1 |
_version_ |
1790601258638245888 |
spelling |
ftinsu:oai:HAL:hal-03775843v1 2024-02-11T10:04:35+01:00 Content in fatty acids and carotenoids in phytoplankton blooms during the seasonal sea ice retreat in Hudson Bay complex, Canada Amiraux, Rémi Lavaud, Johann Cameron-Bergeron, Kasey Matthes, Lisa Peeken, Ilka Mundy, Christopher Babb, David Tremblay, Jean-Eric Takuvik International Research Laboratory Université Laval Québec (ULaval)-Centre National de la Recherche Scientifique (CNRS) 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) Alfred Wegener Institute for Polar and Marine Research (AWI) Centre for Earth Observation Science Winnipeg University of Manitoba Winnipeg 2022 https://hal.science/hal-03775843 https://hal.science/hal-03775843/document https://hal.science/hal-03775843/file/2022f-Elementa.pdf https://doi.org/10.1525/elementa.2021.00106 en eng HAL CCSD University of California Press info:eu-repo/semantics/altIdentifier/doi/10.1525/elementa.2021.00106 hal-03775843 https://hal.science/hal-03775843 https://hal.science/hal-03775843/document https://hal.science/hal-03775843/file/2022f-Elementa.pdf doi:10.1525/elementa.2021.00106 info:eu-repo/semantics/OpenAccess EISSN: 2325-1026 Elementa: Science of the Anthropocene https://hal.science/hal-03775843 Elementa: Science of the Anthropocene, 2022, 10 (1), pp.00106. ⟨10.1525/elementa.2021.00106⟩ Hudson Bay complex Spring phytoplankton bloom Long chain polyunsaturated fatty acids Docosahexaenoic acid Eicosapentaenoic acid Carotenoid Fucoxanthin Peridinin [SDE]Environmental Sciences [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.1525/elementa.2021.00106 2024-01-24T17:28:33Z International audience The Hudson Bay complex (HBC) is home to numerous indigenous communities that traditionally have relied heavily on its marine resources. The nutritional quality and stocks of the entire HBC food web depend in large part on the phytoplankton production of bioactive molecules (long chain polyunsaturated fatty acids and carotenoids) and their transfer through trophic levels. The purpose of this study was thus to determine which molecules were produced during spring phytoplankton blooms, as well as the environmental factors driving this production. We investigated 21 stations in 5 sub-regions of the HBC. At the time of sampling, the sub-regions studied had different environmental settings (e.g., ice cover, nutrients, seawater salinity and temperature) conditioning their bloom stages. Pre- and post-bloom stages were associated with relatively low concentrations of bioactive molecules (either fatty acids or carotenoids). In contrast, the highest concentrations of bioactive molecules (dominated by eicosapentaenoic acid and fucoxanthin) were associated with the diatom bloom that typically occurs at the ice edge when silicates remain available. Interestingly, the large riverine inputs in eastern Hudson Bay led to a change in protist composition (larger contribution of Dinophyceae), resulting in lower while more diverse content of bioactive molecules, whether fatty acids (e.g., α-linolenic acid) or carotenoids (e.g., peridinin). As greater stratification of the HBC is expected in the future, we suggest that a mixotrophic/heterotrophic flagellate-based food web would become more prevalent, resulting in a smaller supply of bioactive molecules for the food web. Article in Journal/Newspaper Hudson Bay Sea ice Institut national des sciences de l'Univers: HAL-INSU Hudson Bay Canada Hudson Elementa: Science of the Anthropocene 10 1 |