Contrasting sea ice conditions shape microbial food webs in Hudson Bay (Canadian Arctic)
Abstract The transition from ice-covered to open water is a recurring feature of the Arctic and sub-Arctic, but microbial diversity and cascading effects on the microbial food webs is poorly known. Here, we investigated microbial eukaryote, bacterial and archaeal communities in Hudson Bay (sub-Arcti...
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Oxford University Press (OUP)
2022
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Online Access: | http://dx.doi.org/10.1038/s43705-022-00192-7 https://www.nature.com/articles/s43705-022-00192-7.pdf https://www.nature.com/articles/s43705-022-00192-7 https://academic.oup.com/ismecommun/article-pdf/2/1/104/55499637/43705_2022_article_192.pdf |
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croxfordunivpr:10.1038/s43705-022-00192-7 2024-03-03T08:41:18+00:00 Contrasting sea ice conditions shape microbial food webs in Hudson Bay (Canadian Arctic) Jacquemot, Loïc Vigneron, Adrien Tremblay, Jean-Éric Lovejoy, Connie Canada First Research Excellence Fund Gouvernement du Québec | Fonds de research du Québec -nature et technologies (FRQNT) Québec Qc Gouvernement du Canada | Natural Sciences and Engineering Research Council of Canada Gouvernement du Canada | Networks of Centres of Excellence of Canada Canada Foundation for Innovation Fonds de Recherche du Québec - Nature et Technologies Canada First Research Excellence Fund Gouvernement du Québec | Fonds de research du Québec -nature et technologies (FRQNT) Québec Qc Gouvernement du Canada | Natural Sciences and Engineering Research Council of Canada Gouvernement du Canada | Networks of Centres of Excellence of Canada Canada Foundation for Innovation Fonds de Recherche du Québec - Nature et Technologies Canada First Research Excellence Fund 2022 http://dx.doi.org/10.1038/s43705-022-00192-7 https://www.nature.com/articles/s43705-022-00192-7.pdf https://www.nature.com/articles/s43705-022-00192-7 https://academic.oup.com/ismecommun/article-pdf/2/1/104/55499637/43705_2022_article_192.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 ISME Communications volume 2, issue 1 ISSN 2730-6151 General Medicine journal-article 2022 croxfordunivpr https://doi.org/10.1038/s43705-022-00192-7 2024-02-05T10:33:47Z Abstract The transition from ice-covered to open water is a recurring feature of the Arctic and sub-Arctic, but microbial diversity and cascading effects on the microbial food webs is poorly known. Here, we investigated microbial eukaryote, bacterial and archaeal communities in Hudson Bay (sub-Arctic, Canada) under sea-ice cover and open waters conditions. Co-occurrence networks revealed a <3 µm pico‒phytoplankton-based food web under the ice and a >3 µm nano‒microphytoplankton-based food web in the open waters. The ice-edge communities were characteristic of post-bloom conditions with high proportions of the picophytoplankton Micromonas and Bathycoccus. Nano‒ to micro‒phytoplankton and ice associated diatoms were detected throughout the water column, with the sympagic Melosira arctica exclusive to ice-covered central Hudson Bay and Thalassiosira in open northwestern Hudson Bay. Heterotrophic microbial eukaryotes and prokaryotes also differed by ice-state, suggesting a linkage between microbes at depth and surface phytoplankton bloom state. The findings suggest that a longer open water season may favor the establishment of a large phytoplankton-based food web at the subsurface chlorophyll maxima (SCM), increasing carbon export from pelagic diatoms to deeper waters and affect higher trophic levels in the deep Hudson Bay. Article in Journal/Newspaper Arctic Hudson Bay Phytoplankton Sea ice Oxford University Press Arctic Hudson Bay Canada Hudson ISME Communications 2 1 |
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Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Jacquemot, Loïc Vigneron, Adrien Tremblay, Jean-Éric Lovejoy, Connie Contrasting sea ice conditions shape microbial food webs in Hudson Bay (Canadian Arctic) |
topic_facet |
General Medicine |
description |
Abstract The transition from ice-covered to open water is a recurring feature of the Arctic and sub-Arctic, but microbial diversity and cascading effects on the microbial food webs is poorly known. Here, we investigated microbial eukaryote, bacterial and archaeal communities in Hudson Bay (sub-Arctic, Canada) under sea-ice cover and open waters conditions. Co-occurrence networks revealed a <3 µm pico‒phytoplankton-based food web under the ice and a >3 µm nano‒microphytoplankton-based food web in the open waters. The ice-edge communities were characteristic of post-bloom conditions with high proportions of the picophytoplankton Micromonas and Bathycoccus. Nano‒ to micro‒phytoplankton and ice associated diatoms were detected throughout the water column, with the sympagic Melosira arctica exclusive to ice-covered central Hudson Bay and Thalassiosira in open northwestern Hudson Bay. Heterotrophic microbial eukaryotes and prokaryotes also differed by ice-state, suggesting a linkage between microbes at depth and surface phytoplankton bloom state. The findings suggest that a longer open water season may favor the establishment of a large phytoplankton-based food web at the subsurface chlorophyll maxima (SCM), increasing carbon export from pelagic diatoms to deeper waters and affect higher trophic levels in the deep Hudson Bay. |
author2 |
Canada First Research Excellence Fund Gouvernement du Québec | Fonds de research du Québec -nature et technologies (FRQNT) Québec Qc Gouvernement du Canada | Natural Sciences and Engineering Research Council of Canada Gouvernement du Canada | Networks of Centres of Excellence of Canada Canada Foundation for Innovation Fonds de Recherche du Québec - Nature et Technologies Canada First Research Excellence Fund Gouvernement du Québec | Fonds de research du Québec -nature et technologies (FRQNT) Québec Qc Gouvernement du Canada | Natural Sciences and Engineering Research Council of Canada Gouvernement du Canada | Networks of Centres of Excellence of Canada Canada Foundation for Innovation Fonds de Recherche du Québec - Nature et Technologies Canada First Research Excellence Fund |
format |
Article in Journal/Newspaper |
author |
Jacquemot, Loïc Vigneron, Adrien Tremblay, Jean-Éric Lovejoy, Connie |
author_facet |
Jacquemot, Loïc Vigneron, Adrien Tremblay, Jean-Éric Lovejoy, Connie |
author_sort |
Jacquemot, Loïc |
title |
Contrasting sea ice conditions shape microbial food webs in Hudson Bay (Canadian Arctic) |
title_short |
Contrasting sea ice conditions shape microbial food webs in Hudson Bay (Canadian Arctic) |
title_full |
Contrasting sea ice conditions shape microbial food webs in Hudson Bay (Canadian Arctic) |
title_fullStr |
Contrasting sea ice conditions shape microbial food webs in Hudson Bay (Canadian Arctic) |
title_full_unstemmed |
Contrasting sea ice conditions shape microbial food webs in Hudson Bay (Canadian Arctic) |
title_sort |
contrasting sea ice conditions shape microbial food webs in hudson bay (canadian arctic) |
publisher |
Oxford University Press (OUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1038/s43705-022-00192-7 https://www.nature.com/articles/s43705-022-00192-7.pdf https://www.nature.com/articles/s43705-022-00192-7 https://academic.oup.com/ismecommun/article-pdf/2/1/104/55499637/43705_2022_article_192.pdf |
geographic |
Arctic Hudson Bay Canada Hudson |
geographic_facet |
Arctic Hudson Bay Canada Hudson |
genre |
Arctic Hudson Bay Phytoplankton Sea ice |
genre_facet |
Arctic Hudson Bay Phytoplankton Sea ice |
op_source |
ISME Communications volume 2, issue 1 ISSN 2730-6151 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.1038/s43705-022-00192-7 |
container_title |
ISME Communications |
container_volume |
2 |
container_issue |
1 |
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1792497070611890176 |