Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic
Sea ice, a characteristic feature of polar waters, is home to diverse microbial communities. Sea-ice picoeukaryotes (unicellular eukaryotes with cell size <3 μm) have received little attention compared with diatoms that dominate the spring bloom in Arctic first-year sea ice. Here, we investigated...
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ftpubmed:oai:pubmedcentral.nih.gov:3721110 2023-05-15T14:28:54+02:00 Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic Piwosz, Kasia Wiktor, Józef Maria Niemi, Andrea Tatarek, Agnieszka Michel, Christine 2013-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3721110 http://www.ncbi.nlm.nih.gov/pubmed/23514779 https://doi.org/10.1038/ismej.2013.39 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/23514779 http://dx.doi.org/10.1038/ismej.2013.39 Copyright © 2013 International Society for Microbial Ecology Original Article Text 2013 ftpubmed https://doi.org/10.1038/ismej.2013.39 2014-08-03T00:43:19Z Sea ice, a characteristic feature of polar waters, is home to diverse microbial communities. Sea-ice picoeukaryotes (unicellular eukaryotes with cell size <3 μm) have received little attention compared with diatoms that dominate the spring bloom in Arctic first-year sea ice. Here, we investigated the abundance of all picoeukaryotes, and of 11 groups (chlorophytes, cryptophytes, bolidophytes, haptophytes, Pavlovaphyceae, Phaeocystis spp., pedinellales, stramenopiles groups MAST-1, MAST-2 and MAST-6 and Syndiniales Group II) at 13 first-year sea-ice stations localized in Barrow Strait and in the vicinity of Cornwallis Island, Canadian Arctic Archipelago. We applied Catalyzed Reporter Deposition–Fluorescence In Situ Hybridization to identify selected groups at a single cell level. Pavlovaphyceae and stramenopiles from groups MAST-2 and MAST-6 were for the first time reported from sea ice. Total numbers of picoeukaryotes were significantly higher in the vicinity of Cornwallis Island than in Barrow Strait. Similar trend was observed for all the groups except for haptophytes. Chlorophytes and cryptophytes were the dominant plastidic, and MAST-2 most numerous aplastidic of all the groups investigated. Numbers of total picoeukaryotes, chlorophytes and MAST-2 stramenopiles were positively correlated with the thickness of snow cover. All studied algal and MAST groups fed on bacteria. Presence of picoeukaryotes from various trophic groups (mixotrophs, phagotrophic and parasitic heterotrophs) indicates the diverse ecological roles picoeukaryotes have in sea ice. Yet, >50% of total sea-ice picoeukaryote cells remained unidentified, highlighting the need for further study of functional and phylogenetic sea-ice diversity, to elucidate the risks posed by ongoing Arctic changes. Text Arctic Archipelago Arctic Canadian Arctic Archipelago Cornwallis Island Sea ice PubMed Central (PMC) Arctic Barrow Strait ENVELOPE(-94.168,-94.168,74.402,74.402) Canadian Arctic Archipelago Cornwallis ENVELOPE(-54.464,-54.464,-61.072,-61.072) Cornwallis Island ENVELOPE(-95.001,-95.001,75.135,75.135) The ISME Journal 7 8 1461 1471 |
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Original Article |
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Original Article Piwosz, Kasia Wiktor, Józef Maria Niemi, Andrea Tatarek, Agnieszka Michel, Christine Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic |
topic_facet |
Original Article |
description |
Sea ice, a characteristic feature of polar waters, is home to diverse microbial communities. Sea-ice picoeukaryotes (unicellular eukaryotes with cell size <3 μm) have received little attention compared with diatoms that dominate the spring bloom in Arctic first-year sea ice. Here, we investigated the abundance of all picoeukaryotes, and of 11 groups (chlorophytes, cryptophytes, bolidophytes, haptophytes, Pavlovaphyceae, Phaeocystis spp., pedinellales, stramenopiles groups MAST-1, MAST-2 and MAST-6 and Syndiniales Group II) at 13 first-year sea-ice stations localized in Barrow Strait and in the vicinity of Cornwallis Island, Canadian Arctic Archipelago. We applied Catalyzed Reporter Deposition–Fluorescence In Situ Hybridization to identify selected groups at a single cell level. Pavlovaphyceae and stramenopiles from groups MAST-2 and MAST-6 were for the first time reported from sea ice. Total numbers of picoeukaryotes were significantly higher in the vicinity of Cornwallis Island than in Barrow Strait. Similar trend was observed for all the groups except for haptophytes. Chlorophytes and cryptophytes were the dominant plastidic, and MAST-2 most numerous aplastidic of all the groups investigated. Numbers of total picoeukaryotes, chlorophytes and MAST-2 stramenopiles were positively correlated with the thickness of snow cover. All studied algal and MAST groups fed on bacteria. Presence of picoeukaryotes from various trophic groups (mixotrophs, phagotrophic and parasitic heterotrophs) indicates the diverse ecological roles picoeukaryotes have in sea ice. Yet, >50% of total sea-ice picoeukaryote cells remained unidentified, highlighting the need for further study of functional and phylogenetic sea-ice diversity, to elucidate the risks posed by ongoing Arctic changes. |
format |
Text |
author |
Piwosz, Kasia Wiktor, Józef Maria Niemi, Andrea Tatarek, Agnieszka Michel, Christine |
author_facet |
Piwosz, Kasia Wiktor, Józef Maria Niemi, Andrea Tatarek, Agnieszka Michel, Christine |
author_sort |
Piwosz, Kasia |
title |
Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic |
title_short |
Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic |
title_full |
Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic |
title_fullStr |
Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic |
title_full_unstemmed |
Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic |
title_sort |
mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the canadian arctic |
publisher |
Nature Publishing Group |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3721110 http://www.ncbi.nlm.nih.gov/pubmed/23514779 https://doi.org/10.1038/ismej.2013.39 |
long_lat |
ENVELOPE(-94.168,-94.168,74.402,74.402) ENVELOPE(-54.464,-54.464,-61.072,-61.072) ENVELOPE(-95.001,-95.001,75.135,75.135) |
geographic |
Arctic Barrow Strait Canadian Arctic Archipelago Cornwallis Cornwallis Island |
geographic_facet |
Arctic Barrow Strait Canadian Arctic Archipelago Cornwallis Cornwallis Island |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Cornwallis Island Sea ice |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Cornwallis Island Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/23514779 http://dx.doi.org/10.1038/ismej.2013.39 |
op_rights |
Copyright © 2013 International Society for Microbial Ecology |
op_doi |
https://doi.org/10.1038/ismej.2013.39 |
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The ISME Journal |
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7 |
container_issue |
8 |
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1461 |
op_container_end_page |
1471 |
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1766303041162575872 |