Diversity and Distribution of Marine Microbial Eukaryotes in the Arctic Ocean and Adjacent Seas
ABSTRACT We analyzed microbial eukaryote diversity in perennially cold arctic marine waters by using 18S rRNA gene clone libraries. Samples were collected during concurrent oceanographic missions to opposite sides of the Arctic Ocean Basin and encompassed five distinct water masses. Two deep water A...
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Online Access: | http://dx.doi.org/10.1128/aem.72.5.3085-3095.2006 https://journals.asm.org/doi/pdf/10.1128/AEM.72.5.3085-3095.2006 |
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crasmicro:10.1128/aem.72.5.3085-3095.2006 2024-09-30T14:29:29+00:00 Diversity and Distribution of Marine Microbial Eukaryotes in the Arctic Ocean and Adjacent Seas Lovejoy, C. Massana, R. Pedrós-Alió, C. 2006 http://dx.doi.org/10.1128/aem.72.5.3085-3095.2006 https://journals.asm.org/doi/pdf/10.1128/AEM.72.5.3085-3095.2006 en eng American Society for Microbiology https://journals.asm.org/non-commercial-tdm-license Applied and Environmental Microbiology volume 72, issue 5, page 3085-3095 ISSN 0099-2240 1098-5336 journal-article 2006 crasmicro https://doi.org/10.1128/aem.72.5.3085-3095.2006 2024-09-09T04:16:12Z ABSTRACT We analyzed microbial eukaryote diversity in perennially cold arctic marine waters by using 18S rRNA gene clone libraries. Samples were collected during concurrent oceanographic missions to opposite sides of the Arctic Ocean Basin and encompassed five distinct water masses. Two deep water Arctic Ocean sites and the convergence of the Greenland, Norwegian, and Barents Seas were sampled from 28 August to 2 September 2002. An additional sample was obtained from the Beaufort Sea (Canada) in early October 2002. The ribotypes were diverse, with different communities among sites and between the upper mixed layer and just below the halocline. Eukaryotes from the remote Canada Basin contained new phylotypes belonging to the radiolarian orders Acantharea, Polycystinea, and Taxopodida. A novel group within the photosynthetic stramenopiles was also identified. One sample closest to the interior of the Canada Basin yielded only four major taxa, and all but two of the sequences recovered belonged to the polar diatom Fragilariopsis and a radiolarian. Overall, 42% of the sequences were <98% similar to any sequences in GenBank. Moreover, 15% of these were <95% similar to previously recovered sequences, which is indicative of endemic or undersampled taxa in the North Polar environment. The cold, stable Arctic Ocean is a threatened environment, and climate change could result in significant loss of global microbial biodiversity. Article in Journal/Newspaper Arctic Arctic Ocean Beaufort Sea canada basin Climate change Greenland ASM Journals (American Society for Microbiology) Arctic Arctic Ocean Canada Greenland Applied and Environmental Microbiology 72 5 3085 3095 |
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Open Polar |
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ASM Journals (American Society for Microbiology) |
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crasmicro |
language |
English |
description |
ABSTRACT We analyzed microbial eukaryote diversity in perennially cold arctic marine waters by using 18S rRNA gene clone libraries. Samples were collected during concurrent oceanographic missions to opposite sides of the Arctic Ocean Basin and encompassed five distinct water masses. Two deep water Arctic Ocean sites and the convergence of the Greenland, Norwegian, and Barents Seas were sampled from 28 August to 2 September 2002. An additional sample was obtained from the Beaufort Sea (Canada) in early October 2002. The ribotypes were diverse, with different communities among sites and between the upper mixed layer and just below the halocline. Eukaryotes from the remote Canada Basin contained new phylotypes belonging to the radiolarian orders Acantharea, Polycystinea, and Taxopodida. A novel group within the photosynthetic stramenopiles was also identified. One sample closest to the interior of the Canada Basin yielded only four major taxa, and all but two of the sequences recovered belonged to the polar diatom Fragilariopsis and a radiolarian. Overall, 42% of the sequences were <98% similar to any sequences in GenBank. Moreover, 15% of these were <95% similar to previously recovered sequences, which is indicative of endemic or undersampled taxa in the North Polar environment. The cold, stable Arctic Ocean is a threatened environment, and climate change could result in significant loss of global microbial biodiversity. |
format |
Article in Journal/Newspaper |
author |
Lovejoy, C. Massana, R. Pedrós-Alió, C. |
spellingShingle |
Lovejoy, C. Massana, R. Pedrós-Alió, C. Diversity and Distribution of Marine Microbial Eukaryotes in the Arctic Ocean and Adjacent Seas |
author_facet |
Lovejoy, C. Massana, R. Pedrós-Alió, C. |
author_sort |
Lovejoy, C. |
title |
Diversity and Distribution of Marine Microbial Eukaryotes in the Arctic Ocean and Adjacent Seas |
title_short |
Diversity and Distribution of Marine Microbial Eukaryotes in the Arctic Ocean and Adjacent Seas |
title_full |
Diversity and Distribution of Marine Microbial Eukaryotes in the Arctic Ocean and Adjacent Seas |
title_fullStr |
Diversity and Distribution of Marine Microbial Eukaryotes in the Arctic Ocean and Adjacent Seas |
title_full_unstemmed |
Diversity and Distribution of Marine Microbial Eukaryotes in the Arctic Ocean and Adjacent Seas |
title_sort |
diversity and distribution of marine microbial eukaryotes in the arctic ocean and adjacent seas |
publisher |
American Society for Microbiology |
publishDate |
2006 |
url |
http://dx.doi.org/10.1128/aem.72.5.3085-3095.2006 https://journals.asm.org/doi/pdf/10.1128/AEM.72.5.3085-3095.2006 |
geographic |
Arctic Arctic Ocean Canada Greenland |
geographic_facet |
Arctic Arctic Ocean Canada Greenland |
genre |
Arctic Arctic Ocean Beaufort Sea canada basin Climate change Greenland |
genre_facet |
Arctic Arctic Ocean Beaufort Sea canada basin Climate change Greenland |
op_source |
Applied and Environmental Microbiology volume 72, issue 5, page 3085-3095 ISSN 0099-2240 1098-5336 |
op_rights |
https://journals.asm.org/non-commercial-tdm-license |
op_doi |
https://doi.org/10.1128/aem.72.5.3085-3095.2006 |
container_title |
Applied and Environmental Microbiology |
container_volume |
72 |
container_issue |
5 |
container_start_page |
3085 |
op_container_end_page |
3095 |
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1811634768539811840 |