| Download | - View accepted manuscript: Prokaryotic diversity of arctic ice shelf microbial mats (PDF, 902 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1111/j.1462-2920.2007.01516.x |
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| Author | Search for: Bottos, Eric M.; Search for: Vincent, Warwick F.; Search for: Greer, Charles W.1; Search for: Whyte, Lyle G. |
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| Affiliation | - National Research Council of Canada. NRC Biotechnology Research Institute
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| Format | Text, Article |
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| Subject | environmental |
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| Abstract | The prokaryotic diversity and respiratory activity of microbial mat communities on the Markham Ice Shelf and Ward Hunt Ice Shelf in the Canadian high Arctic were analysed. All heterotrophic isolates and > 95% of bacterial 16S rRNA gene clone library sequences from both ice shelves grouped within the phyla Bacteroidetes, Proteobacteria and Actinobacteria. Clone library analyses showed that the bacterial communities were diverse and varied significantly between the two ice shelves, with the Markham library having a higher estimated diversity (Chao1 = 243; 105 operational taxonomic units observed in 189 clones) than the Ward Hunt library (Chao1 = 106; 52 operational taxonomic units observed in 128 clones). Archaeal 16S rRNA gene clone libraries from both ice shelves were dominated by a single Euryarchaeota sequence, which appears to represent a novel phylotype. Analyses of community activity by radiorespiration assays detected metabolism in mat samples from both ice shelves at temperatures as low as -10°C. These findings provide the first insight into the prokaryotic biodiversity of Arctic ice shelf communities and underscore the importance of these cryo-ecosystems as a rich source of microbiota that are adapted to extreme cold. |
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| Publication date | 2008-01-23 |
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| In | |
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| Language | English |
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| NRC number | NRCC 49952 |
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| NPARC number | 12432179 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 300f5878-6e31-43ad-a16a-0d8ce3eda61b |
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| Record created | 2009-10-26 |
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| Record modified | 2020-04-15 |
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