High bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert.
In this study we report the bacterial diversity of biological soil crusts (biocrusts) inhabiting polar desert soils at the northern land limit of the Arctic polar region (83° 05 N). Employing pyrosequencing of bacterial 16S rRNA genes this study demonstrated that these biocrusts harbor diverse bacte...
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ftdoajarticles:oai:doaj.org/article:c7e802e27631482ba0a37b307822c03f 2023-05-15T14:54:44+02:00 High bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert. Blaire Steven Marie Lionard Cheryl R Kuske Warwick F Vincent 2013-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0071489 https://doaj.org/article/c7e802e27631482ba0a37b307822c03f EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3742766?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0071489 https://doaj.org/article/c7e802e27631482ba0a37b307822c03f PLoS ONE, Vol 8, Iss 8, p e71489 (2013) Medicine R Science Q article 2013 ftdoajarticles https://doi.org/10.1371/journal.pone.0071489 2022-12-31T06:31:13Z In this study we report the bacterial diversity of biological soil crusts (biocrusts) inhabiting polar desert soils at the northern land limit of the Arctic polar region (83° 05 N). Employing pyrosequencing of bacterial 16S rRNA genes this study demonstrated that these biocrusts harbor diverse bacterial communities, often as diverse as temperate latitude communities. The effect of wetting pulses on the composition of communities was also determined by collecting samples from soils outside and inside of permafrost water tracks, hill slope flow paths that drain permafrost-affected soils. The intermittent flow regime in the water tracks was correlated with altered relative abundance of phylum level taxonomic bins in the bacterial communities, but the alterations varied between individual sampling sites. Bacteria related to the Cyanobacteria and Acidobacteria demonstrated shifts in relative abundance based on their location either inside or outside of the water tracks. Among cyanobacterial sequences, the proportion of sequences belonging to the family Oscillatoriales consistently increased in relative abundance in the samples from inside the water tracks compared to those outside. Acidobacteria showed responses to wetting pulses in the water tracks, increasing in abundance at one site and decreasing at the other two sites. Subdivision 4 acidobacterial sequences tended to follow the trends in the total Acidobacteria relative abundance, suggesting these organisms were largely responsible for the changes observed in the Acidobacteria. Taken together, these data suggest that the bacterial communities of these high latitude polar biocrusts are diverse but do not show a consensus response to intermittent flow in water tracks over high Arctic permafrost. Article in Journal/Newspaper Arctic permafrost polar desert Directory of Open Access Journals: DOAJ Articles Arctic PLoS ONE 8 8 e71489 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Blaire Steven Marie Lionard Cheryl R Kuske Warwick F Vincent High bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert. |
topic_facet |
Medicine R Science Q |
description |
In this study we report the bacterial diversity of biological soil crusts (biocrusts) inhabiting polar desert soils at the northern land limit of the Arctic polar region (83° 05 N). Employing pyrosequencing of bacterial 16S rRNA genes this study demonstrated that these biocrusts harbor diverse bacterial communities, often as diverse as temperate latitude communities. The effect of wetting pulses on the composition of communities was also determined by collecting samples from soils outside and inside of permafrost water tracks, hill slope flow paths that drain permafrost-affected soils. The intermittent flow regime in the water tracks was correlated with altered relative abundance of phylum level taxonomic bins in the bacterial communities, but the alterations varied between individual sampling sites. Bacteria related to the Cyanobacteria and Acidobacteria demonstrated shifts in relative abundance based on their location either inside or outside of the water tracks. Among cyanobacterial sequences, the proportion of sequences belonging to the family Oscillatoriales consistently increased in relative abundance in the samples from inside the water tracks compared to those outside. Acidobacteria showed responses to wetting pulses in the water tracks, increasing in abundance at one site and decreasing at the other two sites. Subdivision 4 acidobacterial sequences tended to follow the trends in the total Acidobacteria relative abundance, suggesting these organisms were largely responsible for the changes observed in the Acidobacteria. Taken together, these data suggest that the bacterial communities of these high latitude polar biocrusts are diverse but do not show a consensus response to intermittent flow in water tracks over high Arctic permafrost. |
format |
Article in Journal/Newspaper |
author |
Blaire Steven Marie Lionard Cheryl R Kuske Warwick F Vincent |
author_facet |
Blaire Steven Marie Lionard Cheryl R Kuske Warwick F Vincent |
author_sort |
Blaire Steven |
title |
High bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert. |
title_short |
High bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert. |
title_full |
High bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert. |
title_fullStr |
High bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert. |
title_full_unstemmed |
High bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert. |
title_sort |
high bacterial diversity of biological soil crusts in water tracks over permafrost in the high arctic polar desert. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2013 |
url |
https://doi.org/10.1371/journal.pone.0071489 https://doaj.org/article/c7e802e27631482ba0a37b307822c03f |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost polar desert |
genre_facet |
Arctic permafrost polar desert |
op_source |
PLoS ONE, Vol 8, Iss 8, p e71489 (2013) |
op_relation |
http://europepmc.org/articles/PMC3742766?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0071489 https://doaj.org/article/c7e802e27631482ba0a37b307822c03f |
op_doi |
https://doi.org/10.1371/journal.pone.0071489 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
8 |
container_start_page |
e71489 |
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