Microbial diversity on icelandic glaciers and ice caps
Algae are important primary colonizers of snow and glacial ice, but hitherto little is known about their ecology on Iceland's glaciers and ice caps. Due do the close proximity of active volcanoes delivering large amounts of ash and dust, they are special ecosystems. This study provides the firs...
Published in: | Frontiers in Microbiology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2015
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Online Access: | https://hdl.handle.net/1983/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 https://research-information.bris.ac.uk/en/publications/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 https://doi.org/10.3389/fmicb.2015.00307 http://www.scopus.com/inward/record.url?scp=84927129396&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 2024-04-28T08:26:07+00:00 Microbial diversity on icelandic glaciers and ice caps Lutz, Stefanie Anesio, Alexandre M. Edwards, Arwyn Benning, Liane G. 2015-01-01 https://hdl.handle.net/1983/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 https://research-information.bris.ac.uk/en/publications/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 https://doi.org/10.3389/fmicb.2015.00307 http://www.scopus.com/inward/record.url?scp=84927129396&partnerID=8YFLogxK eng eng https://research-information.bris.ac.uk/en/publications/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 info:eu-repo/semantics/restrictedAccess Lutz , S , Anesio , A M , Edwards , A & Benning , L G 2015 , ' Microbial diversity on icelandic glaciers and ice caps ' , Frontiers in Microbiology , vol. 6 , no. MAR , 307 . https://doi.org/10.3389/fmicb.2015.00307 Albedo Archaea Bacteria Glaciers Iceland Microbial diversity Sequencing Snow algae article 2015 ftubristolcris https://doi.org/10.3389/fmicb.2015.00307 2024-04-03T15:26:39Z Algae are important primary colonizers of snow and glacial ice, but hitherto little is known about their ecology on Iceland's glaciers and ice caps. Due do the close proximity of active volcanoes delivering large amounts of ash and dust, they are special ecosystems. This study provides the first investigation of the presence and diversity of microbial communities on all major Icelandic glaciers and ice caps over a three year period. Using high-throughput sequencing of the small subunit ribosomal RNA genes (16S and 18S), we assessed the snow community structure and complemented these analyses with a comprehensive suite of physical-, geo- and biochemical characterizations of the aqueous and solid components contained in snow and ice samples. Our data reveal that a limited number of snow algal taxa (Chloromonas polyptera, Raphidonema sempervirens and two uncultured Chlamydomonadaceae) support a rich community comprising of other micro-eukaryotes, bacteria and archaea. Proteobacteria and Bacteroidetes were the dominant bacterial phyla. Archaea were also detected in sites where snow algae dominated and they mainly belong to the Nitrososphaerales, which are known as important ammonia oxidizers. Multivariate analyses indicated no relationships between nutrient data and microbial community structure. However, the aqueous geochemical simulations suggest that the microbial communities were not nutrient limited because of the equilibrium of snow with the nutrient-rich and fast dissolving volcanic ash. Increasing algal secondary carotenoid contents in the last stages of the melt seasons have previously been associated with a decrease in surface albedo, which in turn could potentially have an impact on the melt rates of Icelandic glaciers. Article in Journal/Newspaper Iceland University of Bristol: Bristol Research Frontiers in Microbiology 6 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Albedo Archaea Bacteria Glaciers Iceland Microbial diversity Sequencing Snow algae |
spellingShingle |
Albedo Archaea Bacteria Glaciers Iceland Microbial diversity Sequencing Snow algae Lutz, Stefanie Anesio, Alexandre M. Edwards, Arwyn Benning, Liane G. Microbial diversity on icelandic glaciers and ice caps |
topic_facet |
Albedo Archaea Bacteria Glaciers Iceland Microbial diversity Sequencing Snow algae |
description |
Algae are important primary colonizers of snow and glacial ice, but hitherto little is known about their ecology on Iceland's glaciers and ice caps. Due do the close proximity of active volcanoes delivering large amounts of ash and dust, they are special ecosystems. This study provides the first investigation of the presence and diversity of microbial communities on all major Icelandic glaciers and ice caps over a three year period. Using high-throughput sequencing of the small subunit ribosomal RNA genes (16S and 18S), we assessed the snow community structure and complemented these analyses with a comprehensive suite of physical-, geo- and biochemical characterizations of the aqueous and solid components contained in snow and ice samples. Our data reveal that a limited number of snow algal taxa (Chloromonas polyptera, Raphidonema sempervirens and two uncultured Chlamydomonadaceae) support a rich community comprising of other micro-eukaryotes, bacteria and archaea. Proteobacteria and Bacteroidetes were the dominant bacterial phyla. Archaea were also detected in sites where snow algae dominated and they mainly belong to the Nitrososphaerales, which are known as important ammonia oxidizers. Multivariate analyses indicated no relationships between nutrient data and microbial community structure. However, the aqueous geochemical simulations suggest that the microbial communities were not nutrient limited because of the equilibrium of snow with the nutrient-rich and fast dissolving volcanic ash. Increasing algal secondary carotenoid contents in the last stages of the melt seasons have previously been associated with a decrease in surface albedo, which in turn could potentially have an impact on the melt rates of Icelandic glaciers. |
format |
Article in Journal/Newspaper |
author |
Lutz, Stefanie Anesio, Alexandre M. Edwards, Arwyn Benning, Liane G. |
author_facet |
Lutz, Stefanie Anesio, Alexandre M. Edwards, Arwyn Benning, Liane G. |
author_sort |
Lutz, Stefanie |
title |
Microbial diversity on icelandic glaciers and ice caps |
title_short |
Microbial diversity on icelandic glaciers and ice caps |
title_full |
Microbial diversity on icelandic glaciers and ice caps |
title_fullStr |
Microbial diversity on icelandic glaciers and ice caps |
title_full_unstemmed |
Microbial diversity on icelandic glaciers and ice caps |
title_sort |
microbial diversity on icelandic glaciers and ice caps |
publishDate |
2015 |
url |
https://hdl.handle.net/1983/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 https://research-information.bris.ac.uk/en/publications/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 https://doi.org/10.3389/fmicb.2015.00307 http://www.scopus.com/inward/record.url?scp=84927129396&partnerID=8YFLogxK |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Lutz , S , Anesio , A M , Edwards , A & Benning , L G 2015 , ' Microbial diversity on icelandic glaciers and ice caps ' , Frontiers in Microbiology , vol. 6 , no. MAR , 307 . https://doi.org/10.3389/fmicb.2015.00307 |
op_relation |
https://research-information.bris.ac.uk/en/publications/0c509fb8-c6ca-4fcb-8fa4-84d055ff4e01 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.3389/fmicb.2015.00307 |
container_title |
Frontiers in Microbiology |
container_volume |
6 |
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1797585637755322368 |