Contrasting interannual changes in phytoplankton productivity and community structure in the coastal Canadian Arctic Ocean
The rapid physical changes affecting the Arctic Ocean alter the growth conditions of primary producers. In this context, a crucial question is whether these changes will affect the composition of phytoplankton communities, augment their productivity, and eventually enhance food webs. We combined sat...
Published in: | Limnology and Oceanography |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03502947 https://doi.org/10.1002/lno.10581 |
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ftunivnantes:oai:HAL:hal-03502947v1 2023-05-15T14:51:09+02:00 Contrasting interannual changes in phytoplankton productivity and community structure in the coastal Canadian Arctic Ocean Blais, Marjolaine Ardyna, Mathieu Gosselin, Michel Dumont, Dany Bélanger, Simon Tremblay, Jean-Éric Gratton, Yves Marchese, Christian Poulin, Michel Institut des Sciences de la MER de Rimouski (ISMER) Université du Québec à Rimouski (UQAR) 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) Division of Vaccine Discovery La Jolla Institute for Immunology La Jolla, CA, États-Unis Department of Biology Québec Université Laval Québec (ULaval) Centre Eau Terre Environnement Québec (INRS - ETE) Institut National de la Recherche Scientifique Québec (INRS) Centre de Géosciences (GEOSCIENCES) Mines Paris - PSL (École nationale supérieure des mines de Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) 2017 https://hal.archives-ouvertes.fr/hal-03502947 https://doi.org/10.1002/lno.10581 en eng HAL CCSD Association for the Sciences of Limnology and Oceanography info:eu-repo/semantics/altIdentifier/doi/10.1002/lno.10581 hal-03502947 https://hal.archives-ouvertes.fr/hal-03502947 doi:10.1002/lno.10581 ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.archives-ouvertes.fr/hal-03502947 Limnology and Oceanography, Association for the Sciences of Limnology and Oceanography, 2017, 62 (6), pp.2480-2497. ⟨10.1002/lno.10581⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2017 ftunivnantes https://doi.org/10.1002/lno.10581 2022-10-18T23:23:42Z The rapid physical changes affecting the Arctic Ocean alter the growth conditions of primary producers. In this context, a crucial question is whether these changes will affect the composition of phytoplankton communities, augment their productivity, and eventually enhance food webs. We combined satellite and model products with in situ datasets collected during fall and provide new insights into the response of phytoplankton biomass and production in the Canadian Arctic by comparing an interior shelf (Beaufort Sea) and an outflow shelf (Baffin Bay). Correlation analysis was used to distinguish between seasonal and interannual variability and revealed that most biological variables are responding to the interannual pressures of climate change. In southeast Beaufort Sea, a change in phytoplankton community composition occurred, with a significant increase in diatoms from 2% (2002) to 37% (2010-2011) of the total protist abundance. In 2011, photosynthetic picoeukaryotes were twice as abundant as in 2002. For these two phytoplankton groups, abundance was correlated with the duration of the open-water period, which also increased and affected vertical stratification and sea-surface temperature. In contrast, there was a sharp decline in centric diatom abundance as well as in phytoplankton biomass and production in northern Baffin Bay over the years considered. These decreases were linked to changes in seasonal progression and sea-ice dynamics through their impacts on vertical stratification and freshwater input. Overall, our results highlight the importance of stratification and the duration of the open-water period in shaping phytoplankton regimeseither oligotrophic or eutrophicin marine waters of the Canadian Arctic. Article in Journal/Newspaper Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Beaufort Sea Climate change Phytoplankton Sea ice Université de Nantes: HAL-UNIV-NANTES Arctic Arctic Ocean Baffin Bay Limnology and Oceanography 62 6 2480 2497 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Blais, Marjolaine Ardyna, Mathieu Gosselin, Michel Dumont, Dany Bélanger, Simon Tremblay, Jean-Éric Gratton, Yves Marchese, Christian Poulin, Michel Contrasting interannual changes in phytoplankton productivity and community structure in the coastal Canadian Arctic Ocean |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
The rapid physical changes affecting the Arctic Ocean alter the growth conditions of primary producers. In this context, a crucial question is whether these changes will affect the composition of phytoplankton communities, augment their productivity, and eventually enhance food webs. We combined satellite and model products with in situ datasets collected during fall and provide new insights into the response of phytoplankton biomass and production in the Canadian Arctic by comparing an interior shelf (Beaufort Sea) and an outflow shelf (Baffin Bay). Correlation analysis was used to distinguish between seasonal and interannual variability and revealed that most biological variables are responding to the interannual pressures of climate change. In southeast Beaufort Sea, a change in phytoplankton community composition occurred, with a significant increase in diatoms from 2% (2002) to 37% (2010-2011) of the total protist abundance. In 2011, photosynthetic picoeukaryotes were twice as abundant as in 2002. For these two phytoplankton groups, abundance was correlated with the duration of the open-water period, which also increased and affected vertical stratification and sea-surface temperature. In contrast, there was a sharp decline in centric diatom abundance as well as in phytoplankton biomass and production in northern Baffin Bay over the years considered. These decreases were linked to changes in seasonal progression and sea-ice dynamics through their impacts on vertical stratification and freshwater input. Overall, our results highlight the importance of stratification and the duration of the open-water period in shaping phytoplankton regimeseither oligotrophic or eutrophicin marine waters of the Canadian Arctic. |
author2 |
Institut des Sciences de la MER de Rimouski (ISMER) Université du Québec à Rimouski (UQAR) 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) Division of Vaccine Discovery La Jolla Institute for Immunology La Jolla, CA, États-Unis Department of Biology Québec Université Laval Québec (ULaval) Centre Eau Terre Environnement Québec (INRS - ETE) Institut National de la Recherche Scientifique Québec (INRS) Centre de Géosciences (GEOSCIENCES) Mines Paris - PSL (École nationale supérieure des mines de Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
format |
Article in Journal/Newspaper |
author |
Blais, Marjolaine Ardyna, Mathieu Gosselin, Michel Dumont, Dany Bélanger, Simon Tremblay, Jean-Éric Gratton, Yves Marchese, Christian Poulin, Michel |
author_facet |
Blais, Marjolaine Ardyna, Mathieu Gosselin, Michel Dumont, Dany Bélanger, Simon Tremblay, Jean-Éric Gratton, Yves Marchese, Christian Poulin, Michel |
author_sort |
Blais, Marjolaine |
title |
Contrasting interannual changes in phytoplankton productivity and community structure in the coastal Canadian Arctic Ocean |
title_short |
Contrasting interannual changes in phytoplankton productivity and community structure in the coastal Canadian Arctic Ocean |
title_full |
Contrasting interannual changes in phytoplankton productivity and community structure in the coastal Canadian Arctic Ocean |
title_fullStr |
Contrasting interannual changes in phytoplankton productivity and community structure in the coastal Canadian Arctic Ocean |
title_full_unstemmed |
Contrasting interannual changes in phytoplankton productivity and community structure in the coastal Canadian Arctic Ocean |
title_sort |
contrasting interannual changes in phytoplankton productivity and community structure in the coastal canadian arctic ocean |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-03502947 https://doi.org/10.1002/lno.10581 |
geographic |
Arctic Arctic Ocean Baffin Bay |
geographic_facet |
Arctic Arctic Ocean Baffin Bay |
genre |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Beaufort Sea Climate change Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Beaufort Sea Climate change Phytoplankton Sea ice |
op_source |
ISSN: 0024-3590 EISSN: 1939-5590 Limnology and Oceanography https://hal.archives-ouvertes.fr/hal-03502947 Limnology and Oceanography, Association for the Sciences of Limnology and Oceanography, 2017, 62 (6), pp.2480-2497. ⟨10.1002/lno.10581⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/lno.10581 hal-03502947 https://hal.archives-ouvertes.fr/hal-03502947 doi:10.1002/lno.10581 |
op_doi |
https://doi.org/10.1002/lno.10581 |
container_title |
Limnology and Oceanography |
container_volume |
62 |
container_issue |
6 |
container_start_page |
2480 |
op_container_end_page |
2497 |
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1766322209702281216 |