Mesoscale distribution and functional diversity of picoeukaryotes in the first-year sea ice of the Canadian Arctic
Abstract 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...
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Oxford University Press (OUP)
2013
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Online Access: | http://dx.doi.org/10.1038/ismej.2013.39 http://www.nature.com/articles/ismej201339.pdf http://www.nature.com/articles/ismej201339 https://academic.oup.com/ismej/article-pdf/7/8/1461/56426293/41396_2013_article_bfismej201339.pdf |
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croxfordunivpr:10.1038/ismej.2013.39 2024-10-13T14:03:58+00:00 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 http://dx.doi.org/10.1038/ismej.2013.39 http://www.nature.com/articles/ismej201339.pdf http://www.nature.com/articles/ismej201339 https://academic.oup.com/ismej/article-pdf/7/8/1461/56426293/41396_2013_article_bfismej201339.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights http://www.springer.com/tdm http://www.springer.com/tdm The ISME Journal volume 7, issue 8, page 1461-1471 ISSN 1751-7362 1751-7370 journal-article 2013 croxfordunivpr https://doi.org/10.1038/ismej.2013.39 2024-09-17T04:27:50Z Abstract 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. Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Cornwallis Island Sea ice Oxford University Press 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 |
institution |
Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract 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 |
Article in Journal/Newspaper |
author |
Piwosz, Kasia Wiktor, Józef Maria Niemi, Andrea Tatarek, Agnieszka Michel, Christine |
spellingShingle |
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 |
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 |
Oxford University Press (OUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1038/ismej.2013.39 http://www.nature.com/articles/ismej201339.pdf http://www.nature.com/articles/ismej201339 https://academic.oup.com/ismej/article-pdf/7/8/1461/56426293/41396_2013_article_bfismej201339.pdf |
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_source |
The ISME Journal volume 7, issue 8, page 1461-1471 ISSN 1751-7362 1751-7370 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights http://www.springer.com/tdm http://www.springer.com/tdm |
op_doi |
https://doi.org/10.1038/ismej.2013.39 |
container_title |
The ISME Journal |
container_volume |
7 |
container_issue |
8 |
container_start_page |
1461 |
op_container_end_page |
1471 |
_version_ |
1812809140014153728 |