Two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the Arctic Ocean’s North Water (Canada, Greenland)
Abstract Photosynthetic performance in open marine waters is determined by how well phytoplankton species are adapted to their immediate environment and available light. Although there is light for 24 h a day during the Arctic summer, little is known about short-term (h) temporal variability of phyt...
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2021
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Online Access: | http://dx.doi.org/10.1093/plankt/fbab009 http://academic.oup.com/plankt/article-pdf/43/2/126/36806077/fbab009.pdf |
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croxfordunivpr:10.1093/plankt/fbab009 2023-09-26T15:13:53+02:00 Two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the Arctic Ocean’s North Water (Canada, Greenland) Joli, Nathalie Lacour, Thomas Freyria, Nastasia J Royer, Sarah-Jeanne Babin, Marcel Lovejoy, Connie Campbell, Lisa Canadian Excellence Research Chair Natural Sciences and Engineering Research Council of Canada Fonds de Recherche du Québec Nature et Technologies 2021 http://dx.doi.org/10.1093/plankt/fbab009 http://academic.oup.com/plankt/article-pdf/43/2/126/36806077/fbab009.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Journal of Plankton Research volume 43, issue 2, page 126-141 ISSN 0142-7873 1464-3774 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2021 croxfordunivpr https://doi.org/10.1093/plankt/fbab009 2023-08-25T11:34:55Z Abstract Photosynthetic performance in open marine waters is determined by how well phytoplankton species are adapted to their immediate environment and available light. Although there is light for 24 h a day during the Arctic summer, little is known about short-term (h) temporal variability of phytoplankton photosynthetic performance in Arctic waters. To address this, we sampled the North Water (76.5°N) every 4 h over 24 h at two stations on the East and West sides that are influenced by different water masses and current conditions. We specifically investigated phytoplankton pigments, the xanthophyll cycle (XC), which is an indication of photoprotective capacity, and photosynthesis–irradiance (PE) response curves, at the surface and 20 m depth. The photophysiological parameters on the two sides differed along with the taxonomic signal derived from accessory pigments. On both sides, surface XC pigments showed high photoprotection capacity with the dinodinoxanthin–diatoxanthin (DD) and the violaxanthin, antheraxanthin and zeaxanthin cycles correlated with incoming radiation. The PE results showed that communities dominated by small flagellates on the western side performed better compared to diatom dominated communities on the eastern side. We conclude that phytoplankton and photosynthetic capacity differed consistent with known hydrography, with implications for a changing Arctic. Article in Journal/Newspaper Arctic Greenland Phytoplankton Oxford University Press (via Crossref) Arctic Canada Greenland Journal of Plankton Research 43 2 126 141 |
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Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Joli, Nathalie Lacour, Thomas Freyria, Nastasia J Royer, Sarah-Jeanne Babin, Marcel Lovejoy, Connie Two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the Arctic Ocean’s North Water (Canada, Greenland) |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Photosynthetic performance in open marine waters is determined by how well phytoplankton species are adapted to their immediate environment and available light. Although there is light for 24 h a day during the Arctic summer, little is known about short-term (h) temporal variability of phytoplankton photosynthetic performance in Arctic waters. To address this, we sampled the North Water (76.5°N) every 4 h over 24 h at two stations on the East and West sides that are influenced by different water masses and current conditions. We specifically investigated phytoplankton pigments, the xanthophyll cycle (XC), which is an indication of photoprotective capacity, and photosynthesis–irradiance (PE) response curves, at the surface and 20 m depth. The photophysiological parameters on the two sides differed along with the taxonomic signal derived from accessory pigments. On both sides, surface XC pigments showed high photoprotection capacity with the dinodinoxanthin–diatoxanthin (DD) and the violaxanthin, antheraxanthin and zeaxanthin cycles correlated with incoming radiation. The PE results showed that communities dominated by small flagellates on the western side performed better compared to diatom dominated communities on the eastern side. We conclude that phytoplankton and photosynthetic capacity differed consistent with known hydrography, with implications for a changing Arctic. |
author2 |
Campbell, Lisa Canadian Excellence Research Chair Natural Sciences and Engineering Research Council of Canada Fonds de Recherche du Québec Nature et Technologies |
format |
Article in Journal/Newspaper |
author |
Joli, Nathalie Lacour, Thomas Freyria, Nastasia J Royer, Sarah-Jeanne Babin, Marcel Lovejoy, Connie |
author_facet |
Joli, Nathalie Lacour, Thomas Freyria, Nastasia J Royer, Sarah-Jeanne Babin, Marcel Lovejoy, Connie |
author_sort |
Joli, Nathalie |
title |
Two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the Arctic Ocean’s North Water (Canada, Greenland) |
title_short |
Two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the Arctic Ocean’s North Water (Canada, Greenland) |
title_full |
Two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the Arctic Ocean’s North Water (Canada, Greenland) |
title_fullStr |
Two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the Arctic Ocean’s North Water (Canada, Greenland) |
title_full_unstemmed |
Two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the Arctic Ocean’s North Water (Canada, Greenland) |
title_sort |
two versions of short-term phytoplankton ecophysiology and taxonomic assemblages in the arctic ocean’s north water (canada, greenland) |
publisher |
Oxford University Press (OUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1093/plankt/fbab009 http://academic.oup.com/plankt/article-pdf/43/2/126/36806077/fbab009.pdf |
geographic |
Arctic Canada Greenland |
geographic_facet |
Arctic Canada Greenland |
genre |
Arctic Greenland Phytoplankton |
genre_facet |
Arctic Greenland Phytoplankton |
op_source |
Journal of Plankton Research volume 43, issue 2, page 126-141 ISSN 0142-7873 1464-3774 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/plankt/fbab009 |
container_title |
Journal of Plankton Research |
container_volume |
43 |
container_issue |
2 |
container_start_page |
126 |
op_container_end_page |
141 |
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1778134552778113024 |