Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica
Since the first descriptions of Antarctic subglacial lakes, there has been a growing interest and awareness of the possibility that life will exist and potentially thrive in these unique and little known environments. The unusual combination of selection pressures, and isolation from the rest of the...
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ftdoajarticles:oai:doaj.org/article:c34029ce6ca74367bdd37604ad81dacb 2023-05-15T13:49:36+02:00 Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica Gavin Burns Charles S. Cockell Michael A. S. Thorne Dominic A. Hodgson David A. Pearce 2013-09-01T00:00:00Z https://doi.org/10.3390/d5030680 https://doaj.org/article/c34029ce6ca74367bdd37604ad81dacb EN eng MDPI AG http://www.mdpi.com/1424-2818/5/3/680 https://doaj.org/toc/1424-2818 doi:10.3390/d5030680 1424-2818 https://doaj.org/article/c34029ce6ca74367bdd37604ad81dacb Diversity, Vol 5, Iss 3, Pp 680-702 (2013) Antarctica bacteria biodiversity lake polar subglacial sediment Biology (General) QH301-705.5 article 2013 ftdoajarticles https://doi.org/10.3390/d5030680 2022-12-30T20:42:45Z Since the first descriptions of Antarctic subglacial lakes, there has been a growing interest and awareness of the possibility that life will exist and potentially thrive in these unique and little known environments. The unusual combination of selection pressures, and isolation from the rest of the biosphere, might have led to novel adaptations and physiology not seen before, or indeed to the potential discovery of relic populations that may have become extinct elsewhere. Here we report the first microbiological analysis of a sample taken from a former subglacial lake sediment in Antarctica (Lake Hodgson, on the Antarctic Peninsula). This is one of a number of subglacial lakes just emerging at the margins of the Antarctic ice sheet due to the renewed onset of deglaciation. Microbial diversity was divided into 23.8% Actinobacteria, 21.6% Proteobacteria, 20.2% Planctomycetes and 11.6% Chloroflexi, characteristic of a range of habitat types ( Overall, common sequences were neither distinctly polar, low temperature, freshwater nor marine). Twenty three percent of this diversity could only be identified to “unidentified bacterium”. Clearly these are diverse ecosystems with enormous potential. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Hodgson ENVELOPE(166.083,166.083,-78.117,-78.117) The Antarctic Diversity 5 3 680 702 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctica bacteria biodiversity lake polar subglacial sediment Biology (General) QH301-705.5 |
spellingShingle |
Antarctica bacteria biodiversity lake polar subglacial sediment Biology (General) QH301-705.5 Gavin Burns Charles S. Cockell Michael A. S. Thorne Dominic A. Hodgson David A. Pearce Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
topic_facet |
Antarctica bacteria biodiversity lake polar subglacial sediment Biology (General) QH301-705.5 |
description |
Since the first descriptions of Antarctic subglacial lakes, there has been a growing interest and awareness of the possibility that life will exist and potentially thrive in these unique and little known environments. The unusual combination of selection pressures, and isolation from the rest of the biosphere, might have led to novel adaptations and physiology not seen before, or indeed to the potential discovery of relic populations that may have become extinct elsewhere. Here we report the first microbiological analysis of a sample taken from a former subglacial lake sediment in Antarctica (Lake Hodgson, on the Antarctic Peninsula). This is one of a number of subglacial lakes just emerging at the margins of the Antarctic ice sheet due to the renewed onset of deglaciation. Microbial diversity was divided into 23.8% Actinobacteria, 21.6% Proteobacteria, 20.2% Planctomycetes and 11.6% Chloroflexi, characteristic of a range of habitat types ( Overall, common sequences were neither distinctly polar, low temperature, freshwater nor marine). Twenty three percent of this diversity could only be identified to “unidentified bacterium”. Clearly these are diverse ecosystems with enormous potential. |
format |
Article in Journal/Newspaper |
author |
Gavin Burns Charles S. Cockell Michael A. S. Thorne Dominic A. Hodgson David A. Pearce |
author_facet |
Gavin Burns Charles S. Cockell Michael A. S. Thorne Dominic A. Hodgson David A. Pearce |
author_sort |
Gavin Burns |
title |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_short |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_full |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_fullStr |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_full_unstemmed |
Preliminary Analysis of Life within a Former Subglacial Lake Sediment in Antarctica |
title_sort |
preliminary analysis of life within a former subglacial lake sediment in antarctica |
publisher |
MDPI AG |
publishDate |
2013 |
url |
https://doi.org/10.3390/d5030680 https://doaj.org/article/c34029ce6ca74367bdd37604ad81dacb |
long_lat |
ENVELOPE(166.083,166.083,-78.117,-78.117) |
geographic |
Antarctic Antarctic Peninsula Hodgson The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Hodgson The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ice Sheet |
op_source |
Diversity, Vol 5, Iss 3, Pp 680-702 (2013) |
op_relation |
http://www.mdpi.com/1424-2818/5/3/680 https://doaj.org/toc/1424-2818 doi:10.3390/d5030680 1424-2818 https://doaj.org/article/c34029ce6ca74367bdd37604ad81dacb |
op_doi |
https://doi.org/10.3390/d5030680 |
container_title |
Diversity |
container_volume |
5 |
container_issue |
3 |
container_start_page |
680 |
op_container_end_page |
702 |
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1766251837770432512 |