The dynamic bacterial communities of a melting High Arctic glacier snowpack
Abstract Snow environments can occupy over a third of land surface area, but little is known about the dynamics of snowpack bacteria. The effect of snow melt on bacterial community structure and diversity of surface environments of a Svalbard glacier was examined using analyses of 16S rRNA genes via...
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Oxford University Press (OUP)
2013
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croxfordunivpr:10.1038/ismej.2013.51 2024-06-09T07:44:12+00:00 The dynamic bacterial communities of a melting High Arctic glacier snowpack Hell, Katherina Edwards, Arwyn Zarsky, Jakub Podmirseg, Sabine M Girdwood, Susan Pachebat, Justin A Insam, Heribert Sattler, Birgit 2013 http://dx.doi.org/10.1038/ismej.2013.51 http://www.nature.com/articles/ismej201351.pdf http://www.nature.com/articles/ismej201351 https://academic.oup.com/ismej/article-pdf/7/9/1814/56426561/41396_2013_article_bfismej201351.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights The ISME Journal volume 7, issue 9, page 1814-1826 ISSN 1751-7362 1751-7370 journal-article 2013 croxfordunivpr https://doi.org/10.1038/ismej.2013.51 2024-05-10T13:16:54Z Abstract Snow environments can occupy over a third of land surface area, but little is known about the dynamics of snowpack bacteria. The effect of snow melt on bacterial community structure and diversity of surface environments of a Svalbard glacier was examined using analyses of 16S rRNA genes via T-RFLP, qPCR and 454 pyrosequencing. Distinct community structures were found in different habitat types, with changes over 1 week apparent, in particular for the dominant bacterial class present, Betaproteobacteria. The differences observed were consistent with influences from depositional mode (snowfall vs aeolian dusts), contrasting snow with dust-rich snow layers and near-surface ice. Contrary to that, slush as the decompositional product of snow harboured distinct lineages of bacteria, further implying post-depositional changes in community structure. Taxa affiliated to the betaproteobacterial genus Polaromonas were particularly dynamic, and evidence for the presence of betaproteobacterial ammonia-oxidizing bacteria was uncovered, inviting the prospect that the dynamic bacterial communities associated with snowpacks may be active in supraglacial nitrogen cycling and capable of rapid responses to changes induced by snowmelt. Furthermore the potential of supraglacial snowpack ecosystems to respond to transient yet spatially extensive melting episodes such as that observed across most of Greenland’s ice sheet in 2012 merits further investigation. Article in Journal/Newspaper Arctic glacier Ice Sheet Svalbard Oxford University Press Arctic Svalbard The ISME Journal 7 9 1814 1826 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Snow environments can occupy over a third of land surface area, but little is known about the dynamics of snowpack bacteria. The effect of snow melt on bacterial community structure and diversity of surface environments of a Svalbard glacier was examined using analyses of 16S rRNA genes via T-RFLP, qPCR and 454 pyrosequencing. Distinct community structures were found in different habitat types, with changes over 1 week apparent, in particular for the dominant bacterial class present, Betaproteobacteria. The differences observed were consistent with influences from depositional mode (snowfall vs aeolian dusts), contrasting snow with dust-rich snow layers and near-surface ice. Contrary to that, slush as the decompositional product of snow harboured distinct lineages of bacteria, further implying post-depositional changes in community structure. Taxa affiliated to the betaproteobacterial genus Polaromonas were particularly dynamic, and evidence for the presence of betaproteobacterial ammonia-oxidizing bacteria was uncovered, inviting the prospect that the dynamic bacterial communities associated with snowpacks may be active in supraglacial nitrogen cycling and capable of rapid responses to changes induced by snowmelt. Furthermore the potential of supraglacial snowpack ecosystems to respond to transient yet spatially extensive melting episodes such as that observed across most of Greenland’s ice sheet in 2012 merits further investigation. |
format |
Article in Journal/Newspaper |
author |
Hell, Katherina Edwards, Arwyn Zarsky, Jakub Podmirseg, Sabine M Girdwood, Susan Pachebat, Justin A Insam, Heribert Sattler, Birgit |
spellingShingle |
Hell, Katherina Edwards, Arwyn Zarsky, Jakub Podmirseg, Sabine M Girdwood, Susan Pachebat, Justin A Insam, Heribert Sattler, Birgit The dynamic bacterial communities of a melting High Arctic glacier snowpack |
author_facet |
Hell, Katherina Edwards, Arwyn Zarsky, Jakub Podmirseg, Sabine M Girdwood, Susan Pachebat, Justin A Insam, Heribert Sattler, Birgit |
author_sort |
Hell, Katherina |
title |
The dynamic bacterial communities of a melting High Arctic glacier snowpack |
title_short |
The dynamic bacterial communities of a melting High Arctic glacier snowpack |
title_full |
The dynamic bacterial communities of a melting High Arctic glacier snowpack |
title_fullStr |
The dynamic bacterial communities of a melting High Arctic glacier snowpack |
title_full_unstemmed |
The dynamic bacterial communities of a melting High Arctic glacier snowpack |
title_sort |
dynamic bacterial communities of a melting high arctic glacier snowpack |
publisher |
Oxford University Press (OUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1038/ismej.2013.51 http://www.nature.com/articles/ismej201351.pdf http://www.nature.com/articles/ismej201351 https://academic.oup.com/ismej/article-pdf/7/9/1814/56426561/41396_2013_article_bfismej201351.pdf |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic glacier Ice Sheet Svalbard |
genre_facet |
Arctic glacier Ice Sheet Svalbard |
op_source |
The ISME Journal volume 7, issue 9, page 1814-1826 ISSN 1751-7362 1751-7370 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights |
op_doi |
https://doi.org/10.1038/ismej.2013.51 |
container_title |
The ISME Journal |
container_volume |
7 |
container_issue |
9 |
container_start_page |
1814 |
op_container_end_page |
1826 |
_version_ |
1801372997201690624 |