Extreme viral partitioning in a marine-derived high arctic lake
High-latitude, perennially stratified (meromictic) lakes are likely to be especially vulnerable to climate warming because of the importance of ice in maintaining their water column structure and associated distribution of microbial communities. This study aimed to characterize viral abundance, dive...
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fttriple:oai:gotriple.eu:http://hdl.handle.net/20.500.11794/39428 2023-05-15T13:32:38+02:00 Extreme viral partitioning in a marine-derived high arctic lake Labbé, Myriam Girard, Catherine Vincent, Warwick F. Culley, Alexander Arctique Régions polaires 2020-05-13 https://hdl.handle.net/20.500.11794/39428 en eng American Society for Microbiology http://hdl.handle.net/20.500.11794/39428 CorpusUL geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2020 fttriple https://doi.org/20.500.11794/39428 2023-01-22T17:43:10Z High-latitude, perennially stratified (meromictic) lakes are likely to be especially vulnerable to climate warming because of the importance of ice in maintaining their water column structure and associated distribution of microbial communities. This study aimed to characterize viral abundance, diversity, and distribution in a meromictic lake of marine origin on the far northern coast of Ellesmere Island, in the Canadian High Arctic. We collected triplicate samples for double-stranded DNA (dsDNA) viromics from five depths that encompassed the major features of the lake, as determined by limnological profiling of the water column. Viral abundance and virus-to-prokaryote ratios were highest at greater depths, while bacterial and cyanobacterial counts were greatest in the surface waters. The viral communities from each zone of the lake defined by salinity, temperature, and dissolved oxygen concentrations were markedly distinct, suggesting that there was little exchange of viral types among lake strata. Ten viral assembled genomes were obtained from our libraries, and these also segregated with depth. This well-defined structure of viral communities was consistent with that of potential hosts. Viruses from the monimolimnion, a deep layer of ancient Arctic Ocean seawater, were more diverse and relatively abundant, with few similarities to available viral sequences. The Lake A viral communities also differed from published records from the Arctic Ocean and meromictic Ace Lake in Antarctica. This first characterization of viral diversity from this sentinel environment underscores the microbial richness and complexity of an ecosystem type that is increasingly exposed to major perturbations in the fast-changing Arctic. Article in Journal/Newspaper Antarc* Antarctica Arctic Arctic Ocean Arctique* Ellesmere Island Unknown Arctic Arctic Ocean Ellesmere Island Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Ace Lake ENVELOPE(78.188,78.188,-68.472,-68.472) |
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language |
English |
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geo envir Labbé, Myriam Girard, Catherine Vincent, Warwick F. Culley, Alexander Extreme viral partitioning in a marine-derived high arctic lake |
topic_facet |
geo envir |
description |
High-latitude, perennially stratified (meromictic) lakes are likely to be especially vulnerable to climate warming because of the importance of ice in maintaining their water column structure and associated distribution of microbial communities. This study aimed to characterize viral abundance, diversity, and distribution in a meromictic lake of marine origin on the far northern coast of Ellesmere Island, in the Canadian High Arctic. We collected triplicate samples for double-stranded DNA (dsDNA) viromics from five depths that encompassed the major features of the lake, as determined by limnological profiling of the water column. Viral abundance and virus-to-prokaryote ratios were highest at greater depths, while bacterial and cyanobacterial counts were greatest in the surface waters. The viral communities from each zone of the lake defined by salinity, temperature, and dissolved oxygen concentrations were markedly distinct, suggesting that there was little exchange of viral types among lake strata. Ten viral assembled genomes were obtained from our libraries, and these also segregated with depth. This well-defined structure of viral communities was consistent with that of potential hosts. Viruses from the monimolimnion, a deep layer of ancient Arctic Ocean seawater, were more diverse and relatively abundant, with few similarities to available viral sequences. The Lake A viral communities also differed from published records from the Arctic Ocean and meromictic Ace Lake in Antarctica. This first characterization of viral diversity from this sentinel environment underscores the microbial richness and complexity of an ecosystem type that is increasingly exposed to major perturbations in the fast-changing Arctic. |
format |
Article in Journal/Newspaper |
author |
Labbé, Myriam Girard, Catherine Vincent, Warwick F. Culley, Alexander |
author_facet |
Labbé, Myriam Girard, Catherine Vincent, Warwick F. Culley, Alexander |
author_sort |
Labbé, Myriam |
title |
Extreme viral partitioning in a marine-derived high arctic lake |
title_short |
Extreme viral partitioning in a marine-derived high arctic lake |
title_full |
Extreme viral partitioning in a marine-derived high arctic lake |
title_fullStr |
Extreme viral partitioning in a marine-derived high arctic lake |
title_full_unstemmed |
Extreme viral partitioning in a marine-derived high arctic lake |
title_sort |
extreme viral partitioning in a marine-derived high arctic lake |
publisher |
American Society for Microbiology |
publishDate |
2020 |
url |
https://hdl.handle.net/20.500.11794/39428 |
op_coverage |
Arctique Régions polaires |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(78.188,78.188,-68.472,-68.472) |
geographic |
Arctic Arctic Ocean Ellesmere Island Arctic Lake Ace Lake |
geographic_facet |
Arctic Arctic Ocean Ellesmere Island Arctic Lake Ace Lake |
genre |
Antarc* Antarctica Arctic Arctic Ocean Arctique* Ellesmere Island |
genre_facet |
Antarc* Antarctica Arctic Arctic Ocean Arctique* Ellesmere Island |
op_source |
CorpusUL |
op_relation |
http://hdl.handle.net/20.500.11794/39428 |
op_doi |
https://doi.org/20.500.11794/39428 |
_version_ |
1766028791426056192 |