Permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in Arctic permafrost soils
Global warming accelerates permafrost thawing and changes its microbial community structure, but little is known about how microorganisms in permafrost with different ages respond to thawing. Herein, we disentangled the relative importance of permafrost age (young, medium-aged, old, and ancient, spa...
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ftdoajarticles:oai:doaj.org/article:72d6af6c0a7149c483354a8038a241c5 2023-05-15T14:57:57+02:00 Permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in Arctic permafrost soils M. Ji W. Kong C. Liang T. Zhou H. Jia X. Dong 2020-11-01T00:00:00Z https://doi.org/10.5194/tc-14-3907-2020 https://doaj.org/article/72d6af6c0a7149c483354a8038a241c5 EN eng Copernicus Publications https://tc.copernicus.org/articles/14/3907/2020/tc-14-3907-2020.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-14-3907-2020 1994-0416 1994-0424 https://doaj.org/article/72d6af6c0a7149c483354a8038a241c5 The Cryosphere, Vol 14, Pp 3907-3916 (2020) Environmental sciences GE1-350 Geology QE1-996.5 article 2020 ftdoajarticles https://doi.org/10.5194/tc-14-3907-2020 2022-12-31T15:53:56Z Global warming accelerates permafrost thawing and changes its microbial community structure, but little is known about how microorganisms in permafrost with different ages respond to thawing. Herein, we disentangled the relative importance of permafrost age (young, medium-aged, old, and ancient, spanning from 50 to 5000 years) and thawing status (active, transitional, and permanently frozen) in shaping bacterial community structure using HiSeq sequencing of the 16S rRNA gene. Our results revealed significant influences of both permafrost thawing and age on bacterial richness. The bacterial richness was significantly higher in the young and thawed permafrost, and the richness increase was mainly observed in Firmicutes , Actinobacteria , Chloroflexi , Deltaproteobacteria , and Alphaproteobacteria . Permafrost thawing led to a gradual change in bacterial community structure and increased contribution of determinism. Permutational analysis of variance demonstrated that thawing significantly changed bacterial community structure at all soil ages, but the community convergence due to permafrost thawing was not observed. Structural equation modeling revealed that permafrost thawing exhibited a greater influence on both bacterial richness and community structure than permafrost age. Our results indicate that microorganisms in permafrost with different ages respond differently to thawing, which eventually leads to distinct bacterial community compositions and different organic carbon decomposition processes in Arctic permafrost. Article in Journal/Newspaper Arctic Global warming permafrost The Cryosphere Directory of Open Access Journals: DOAJ Articles Arctic The Cryosphere 14 11 3907 3916 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
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Environmental sciences GE1-350 Geology QE1-996.5 M. Ji W. Kong C. Liang T. Zhou H. Jia X. Dong Permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in Arctic permafrost soils |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Global warming accelerates permafrost thawing and changes its microbial community structure, but little is known about how microorganisms in permafrost with different ages respond to thawing. Herein, we disentangled the relative importance of permafrost age (young, medium-aged, old, and ancient, spanning from 50 to 5000 years) and thawing status (active, transitional, and permanently frozen) in shaping bacterial community structure using HiSeq sequencing of the 16S rRNA gene. Our results revealed significant influences of both permafrost thawing and age on bacterial richness. The bacterial richness was significantly higher in the young and thawed permafrost, and the richness increase was mainly observed in Firmicutes , Actinobacteria , Chloroflexi , Deltaproteobacteria , and Alphaproteobacteria . Permafrost thawing led to a gradual change in bacterial community structure and increased contribution of determinism. Permutational analysis of variance demonstrated that thawing significantly changed bacterial community structure at all soil ages, but the community convergence due to permafrost thawing was not observed. Structural equation modeling revealed that permafrost thawing exhibited a greater influence on both bacterial richness and community structure than permafrost age. Our results indicate that microorganisms in permafrost with different ages respond differently to thawing, which eventually leads to distinct bacterial community compositions and different organic carbon decomposition processes in Arctic permafrost. |
format |
Article in Journal/Newspaper |
author |
M. Ji W. Kong C. Liang T. Zhou H. Jia X. Dong |
author_facet |
M. Ji W. Kong C. Liang T. Zhou H. Jia X. Dong |
author_sort |
M. Ji |
title |
Permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in Arctic permafrost soils |
title_short |
Permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in Arctic permafrost soils |
title_full |
Permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in Arctic permafrost soils |
title_fullStr |
Permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in Arctic permafrost soils |
title_full_unstemmed |
Permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in Arctic permafrost soils |
title_sort |
permafrost thawing exhibits a greater influence on bacterial richness and community structure than permafrost age in arctic permafrost soils |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/tc-14-3907-2020 https://doaj.org/article/72d6af6c0a7149c483354a8038a241c5 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming permafrost The Cryosphere |
genre_facet |
Arctic Global warming permafrost The Cryosphere |
op_source |
The Cryosphere, Vol 14, Pp 3907-3916 (2020) |
op_relation |
https://tc.copernicus.org/articles/14/3907/2020/tc-14-3907-2020.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-14-3907-2020 1994-0416 1994-0424 https://doaj.org/article/72d6af6c0a7149c483354a8038a241c5 |
op_doi |
https://doi.org/10.5194/tc-14-3907-2020 |
container_title |
The Cryosphere |
container_volume |
14 |
container_issue |
11 |
container_start_page |
3907 |
op_container_end_page |
3916 |
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