Contrasts between the cryoconite and ice-marginal bacterial communities of Svalbard glaciers
Cryoconite holes are foci of unusually high microbial diversity and activity on glacier surfaces worldwide, comprising melt-holes formed by the darkening of ice by biogenic granular debris. Despite recent studies linking cryoconite microbial community structure to the functionality of cryoconite hab...
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ftjpolarres:oai:journals.openacademia.net:article/3111 2024-09-09T19:26:44+00:00 Contrasts between the cryoconite and ice-marginal bacterial communities of Svalbard glaciers Edwards, Arwyn Rassner, Sara M. Anesio, Alexandre M. Worgan, Hilary J. Irvine-Fynn, Tristram D.L. Williams, Hefin Wyn Sattler, Birgit Griffith, Gareth Wyn 2013-05-22 application/pdf text/html application/epub+zip text/plain https://polarresearch.net/index.php/polar/article/view/3111 https://doi.org/10.3402/polar.v32i0.19468 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3111/pdf_1 https://polarresearch.net/index.php/polar/article/view/3111/html https://polarresearch.net/index.php/polar/article/view/3111/epub https://polarresearch.net/index.php/polar/article/view/3111/xml https://polarresearch.net/index.php/polar/article/view/3111/7157 https://polarresearch.net/index.php/polar/article/view/3111 doi:10.3402/polar.v32i0.19468 Polar Research; Vol 32 (2013) 1751-8369 Cryoconite glacier Svalbard moraines niche T-RFLP info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftjpolarres https://doi.org/10.3402/polar.v32i0.19468 2024-06-20T23:33:17Z Cryoconite holes are foci of unusually high microbial diversity and activity on glacier surfaces worldwide, comprising melt-holes formed by the darkening of ice by biogenic granular debris. Despite recent studies linking cryoconite microbial community structure to the functionality of cryoconite habitats, little is known of the processes shaping the cryoconite bacterial community. In particular, the assertions that the community is strongly influenced by aeolian transfer of biota from ice-marginal habitats and the potential for cryoconite microbes to inoculate proglacial habitats are poorly quantified despite their longevity in the literature. Therefore, the bacterial community structures of cryoconite holes on three High-Arctic glaciers were compared to bacterial communities in adjacent moraines and tundra using terminal-restriction fragment length polymorphism. Distinct community structures for cryoconite and ice-marginal communities were observed. Only a minority of phylotypes are present in both habitat types, implying that cryoconite habitats comprise distinctive niches for bacterial taxa when compared to ice-marginal habitats. Curiously, phylotype abundance distributions for both cryoconite and icemarginal sites best fit models relating to succession. Our analyses demonstrate clearly that cryoconites have their own, distinct functional microbial communities despite significant inputs of cells from other habitats.Keywords: Cryoconite; glacier; Svalbard; moraines; niche; T-RFLP(Published: 22 May 2013)To access the supplementary material for this article, please see Supplementary Files in the column to the right (under Article Tools).Citation: Polar Research 2013, 32, 19468, http://dx.doi.org/10.3402/polar.v32i0.19468 Article in Journal/Newspaper Arctic glacier Polar Research Svalbard Tundra Polar Research Arctic Svalbard Polar Research 32 1 19468 |
institution |
Open Polar |
collection |
Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Cryoconite glacier Svalbard moraines niche T-RFLP |
spellingShingle |
Cryoconite glacier Svalbard moraines niche T-RFLP Edwards, Arwyn Rassner, Sara M. Anesio, Alexandre M. Worgan, Hilary J. Irvine-Fynn, Tristram D.L. Williams, Hefin Wyn Sattler, Birgit Griffith, Gareth Wyn Contrasts between the cryoconite and ice-marginal bacterial communities of Svalbard glaciers |
topic_facet |
Cryoconite glacier Svalbard moraines niche T-RFLP |
description |
Cryoconite holes are foci of unusually high microbial diversity and activity on glacier surfaces worldwide, comprising melt-holes formed by the darkening of ice by biogenic granular debris. Despite recent studies linking cryoconite microbial community structure to the functionality of cryoconite habitats, little is known of the processes shaping the cryoconite bacterial community. In particular, the assertions that the community is strongly influenced by aeolian transfer of biota from ice-marginal habitats and the potential for cryoconite microbes to inoculate proglacial habitats are poorly quantified despite their longevity in the literature. Therefore, the bacterial community structures of cryoconite holes on three High-Arctic glaciers were compared to bacterial communities in adjacent moraines and tundra using terminal-restriction fragment length polymorphism. Distinct community structures for cryoconite and ice-marginal communities were observed. Only a minority of phylotypes are present in both habitat types, implying that cryoconite habitats comprise distinctive niches for bacterial taxa when compared to ice-marginal habitats. Curiously, phylotype abundance distributions for both cryoconite and icemarginal sites best fit models relating to succession. Our analyses demonstrate clearly that cryoconites have their own, distinct functional microbial communities despite significant inputs of cells from other habitats.Keywords: Cryoconite; glacier; Svalbard; moraines; niche; T-RFLP(Published: 22 May 2013)To access the supplementary material for this article, please see Supplementary Files in the column to the right (under Article Tools).Citation: Polar Research 2013, 32, 19468, http://dx.doi.org/10.3402/polar.v32i0.19468 |
format |
Article in Journal/Newspaper |
author |
Edwards, Arwyn Rassner, Sara M. Anesio, Alexandre M. Worgan, Hilary J. Irvine-Fynn, Tristram D.L. Williams, Hefin Wyn Sattler, Birgit Griffith, Gareth Wyn |
author_facet |
Edwards, Arwyn Rassner, Sara M. Anesio, Alexandre M. Worgan, Hilary J. Irvine-Fynn, Tristram D.L. Williams, Hefin Wyn Sattler, Birgit Griffith, Gareth Wyn |
author_sort |
Edwards, Arwyn |
title |
Contrasts between the cryoconite and ice-marginal bacterial communities of Svalbard glaciers |
title_short |
Contrasts between the cryoconite and ice-marginal bacterial communities of Svalbard glaciers |
title_full |
Contrasts between the cryoconite and ice-marginal bacterial communities of Svalbard glaciers |
title_fullStr |
Contrasts between the cryoconite and ice-marginal bacterial communities of Svalbard glaciers |
title_full_unstemmed |
Contrasts between the cryoconite and ice-marginal bacterial communities of Svalbard glaciers |
title_sort |
contrasts between the cryoconite and ice-marginal bacterial communities of svalbard glaciers |
publisher |
Norwegian Polar Institute |
publishDate |
2013 |
url |
https://polarresearch.net/index.php/polar/article/view/3111 https://doi.org/10.3402/polar.v32i0.19468 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic glacier Polar Research Svalbard Tundra |
genre_facet |
Arctic glacier Polar Research Svalbard Tundra |
op_source |
Polar Research; Vol 32 (2013) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3111/pdf_1 https://polarresearch.net/index.php/polar/article/view/3111/html https://polarresearch.net/index.php/polar/article/view/3111/epub https://polarresearch.net/index.php/polar/article/view/3111/xml https://polarresearch.net/index.php/polar/article/view/3111/7157 https://polarresearch.net/index.php/polar/article/view/3111 doi:10.3402/polar.v32i0.19468 |
op_doi |
https://doi.org/10.3402/polar.v32i0.19468 |
container_title |
Polar Research |
container_volume |
32 |
container_issue |
1 |
container_start_page |
19468 |
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1809896293424693248 |