Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau
In this study, six bacterial community structures were analyzed from the Dunde ice core (9.5-m-long) using 16S rRNA gene cloning library technology. Compared to the Muztagata mountain ice core (37-m-long), the Dunde ice core has different dominant community structures, with five genus related groups...
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ftdoajarticles:oai:doaj.org/article:84829cc7acab444cb8584aee4f6d1708 2023-05-15T16:38:42+02:00 Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau Yong Chen Xiang-Kai Li Jing Si Guang-Jian Wu Li-De Tian Shu-Rong Xiang 2016-11-01T00:00:00Z https://doi.org/10.3389/fmicb.2016.01716 https://doaj.org/article/84829cc7acab444cb8584aee4f6d1708 EN eng Frontiers Media S.A. http://journal.frontiersin.org/Journal/10.3389/fmicb.2016.01716/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2016.01716 https://doaj.org/article/84829cc7acab444cb8584aee4f6d1708 Frontiers in Microbiology, Vol 7 (2016) Glacier Tibet Plateau Taxonomic group micro-biogeography live cell density Microbiology QR1-502 article 2016 ftdoajarticles https://doi.org/10.3389/fmicb.2016.01716 2022-12-30T21:51:22Z In this study, six bacterial community structures were analyzed from the Dunde ice core (9.5-m-long) using 16S rRNA gene cloning library technology. Compared to the Muztagata mountain ice core (37-m-long), the Dunde ice core has different dominant community structures, with five genus related groups Blastococcus sp./Propionibacterium, Cryobacterium-related., Flavobacterium sp., Pedobacter sp., and Polaromas sp. that are frequently found in the six tested ice layers from 1990 to 2000. Live and total microbial density patterns were examined and related to the dynamics of physical-chemical parameters, mineral particle concentrations and stable isotopic ratios in the precipitations collected from both Muztagata and Dunde ice cores. The Muztagata ice core revealed seasonal response patterns for both live and total cell density, with high cell density occurring in the warming spring and summer months indicated by the proxy value of the stable isotopic ratios. Seasonal analysis of live cell density for the Dunde ice core was not successful due to the limitations of sampling resolution. Both ice cores showed that the cell density peaks were frequently associated with high concentrations of particles. A comparison of microbial communities in the Dunde and Muztagata glaciers showed that similar taxonomic members exist in the related ice cores, but the composition of the prevalent genus-related groups is largely different between the two geographically different glaciers. This indicates that the micro-biogeography associated with geographic differences was mainly influenced by a few dominant taxonomic groups. Key words: live cell density, taxonomic group, micro-biogeography, glacier, Tibet Plateau Article in Journal/Newspaper ice core Directory of Open Access Journals: DOAJ Articles Frontiers in Microbiology 7 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Glacier Tibet Plateau Taxonomic group micro-biogeography live cell density Microbiology QR1-502 |
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Glacier Tibet Plateau Taxonomic group micro-biogeography live cell density Microbiology QR1-502 Yong Chen Xiang-Kai Li Jing Si Guang-Jian Wu Li-De Tian Shu-Rong Xiang Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau |
topic_facet |
Glacier Tibet Plateau Taxonomic group micro-biogeography live cell density Microbiology QR1-502 |
description |
In this study, six bacterial community structures were analyzed from the Dunde ice core (9.5-m-long) using 16S rRNA gene cloning library technology. Compared to the Muztagata mountain ice core (37-m-long), the Dunde ice core has different dominant community structures, with five genus related groups Blastococcus sp./Propionibacterium, Cryobacterium-related., Flavobacterium sp., Pedobacter sp., and Polaromas sp. that are frequently found in the six tested ice layers from 1990 to 2000. Live and total microbial density patterns were examined and related to the dynamics of physical-chemical parameters, mineral particle concentrations and stable isotopic ratios in the precipitations collected from both Muztagata and Dunde ice cores. The Muztagata ice core revealed seasonal response patterns for both live and total cell density, with high cell density occurring in the warming spring and summer months indicated by the proxy value of the stable isotopic ratios. Seasonal analysis of live cell density for the Dunde ice core was not successful due to the limitations of sampling resolution. Both ice cores showed that the cell density peaks were frequently associated with high concentrations of particles. A comparison of microbial communities in the Dunde and Muztagata glaciers showed that similar taxonomic members exist in the related ice cores, but the composition of the prevalent genus-related groups is largely different between the two geographically different glaciers. This indicates that the micro-biogeography associated with geographic differences was mainly influenced by a few dominant taxonomic groups. Key words: live cell density, taxonomic group, micro-biogeography, glacier, Tibet Plateau |
format |
Article in Journal/Newspaper |
author |
Yong Chen Xiang-Kai Li Jing Si Guang-Jian Wu Li-De Tian Shu-Rong Xiang |
author_facet |
Yong Chen Xiang-Kai Li Jing Si Guang-Jian Wu Li-De Tian Shu-Rong Xiang |
author_sort |
Yong Chen |
title |
Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau |
title_short |
Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau |
title_full |
Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau |
title_fullStr |
Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau |
title_full_unstemmed |
Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau |
title_sort |
changes of the bacterial abundance and communities in shallow ice cores from dunde and muztagata glaciers, tibetan plateau |
publisher |
Frontiers Media S.A. |
publishDate |
2016 |
url |
https://doi.org/10.3389/fmicb.2016.01716 https://doaj.org/article/84829cc7acab444cb8584aee4f6d1708 |
genre |
ice core |
genre_facet |
ice core |
op_source |
Frontiers in Microbiology, Vol 7 (2016) |
op_relation |
http://journal.frontiersin.org/Journal/10.3389/fmicb.2016.01716/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2016.01716 https://doaj.org/article/84829cc7acab444cb8584aee4f6d1708 |
op_doi |
https://doi.org/10.3389/fmicb.2016.01716 |
container_title |
Frontiers in Microbiology |
container_volume |
7 |
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1766029025213415424 |