Species interactions and distinct microbial communities in high Arctic permafrost affected cryosols are associated with the CH 4 and CO 2 gas fluxes
Summary Microbial metabolism of the thawing organic carbon stores in permafrost results in a positive feedback loop of greenhouse gas emissions. CO 2 and CH 4 fluxes and the associated microbial communities in Arctic cryosols are important in predicting future warming potential of the Arctic. We dem...
Published in: | Environmental Microbiology |
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crwiley:10.1111/1462-2920.14715 2024-09-15T18:11:38+00:00 Species interactions and distinct microbial communities in high Arctic permafrost affected cryosols are associated with the CH 4 and CO 2 gas fluxes Altshuler, Ianina Hamel, Jérémie Turney, Shaun Magnuson, Elisse Lévesque, Roger Greer, Charles W. Whyte, Lyle G. 2019 http://dx.doi.org/10.1111/1462-2920.14715 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.14715 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.14715 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.14715 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 21, issue 10, page 3711-3727 ISSN 1462-2912 1462-2920 journal-article 2019 crwiley https://doi.org/10.1111/1462-2920.14715 2024-08-09T04:25:23Z Summary Microbial metabolism of the thawing organic carbon stores in permafrost results in a positive feedback loop of greenhouse gas emissions. CO 2 and CH 4 fluxes and the associated microbial communities in Arctic cryosols are important in predicting future warming potential of the Arctic. We demonstrate that topography had an impact on CH 4 and CO 2 flux at a high Arctic ice‐wedge polygon terrain site, with higher CO 2 emissions and lower CH 4 uptake at troughs compared to polygon interior soils. The pmoA sequencing suggested that USCα cluster of uncultured methanotrophs is likely responsible for observed methane sink. Community profiling revealed distinct assemblages across the terrain at different depths. Deeper soils contained higher abundances of Verrucomicrobia and Gemmatimonadetes , whereas the polygon interior had higher Acidobacteria and lower Betaproteobacteria and Deltaproteobacteria abundances. Genome sequencing of isolates from the terrain revealed presence of carbon cycling genes including ones involved in serine and ribulose monophosphate pathways. A novel hybrid network analysis identified key members that had positive and negative impacts on other species. Operational Taxonomic Units (OTUs) with numerous positive interactions corresponded to Proteobacteria , Candidatus Rokubacteria and Actinobacteria phyla, while Verrucomicrobia and Acidobacteria members had negative impacts on other species. Results indicate that topography and microbial interactions impact community composition. Article in Journal/Newspaper Ice permafrost wedge* Wiley Online Library Environmental Microbiology 21 10 3711 3727 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Summary Microbial metabolism of the thawing organic carbon stores in permafrost results in a positive feedback loop of greenhouse gas emissions. CO 2 and CH 4 fluxes and the associated microbial communities in Arctic cryosols are important in predicting future warming potential of the Arctic. We demonstrate that topography had an impact on CH 4 and CO 2 flux at a high Arctic ice‐wedge polygon terrain site, with higher CO 2 emissions and lower CH 4 uptake at troughs compared to polygon interior soils. The pmoA sequencing suggested that USCα cluster of uncultured methanotrophs is likely responsible for observed methane sink. Community profiling revealed distinct assemblages across the terrain at different depths. Deeper soils contained higher abundances of Verrucomicrobia and Gemmatimonadetes , whereas the polygon interior had higher Acidobacteria and lower Betaproteobacteria and Deltaproteobacteria abundances. Genome sequencing of isolates from the terrain revealed presence of carbon cycling genes including ones involved in serine and ribulose monophosphate pathways. A novel hybrid network analysis identified key members that had positive and negative impacts on other species. Operational Taxonomic Units (OTUs) with numerous positive interactions corresponded to Proteobacteria , Candidatus Rokubacteria and Actinobacteria phyla, while Verrucomicrobia and Acidobacteria members had negative impacts on other species. Results indicate that topography and microbial interactions impact community composition. |
format |
Article in Journal/Newspaper |
author |
Altshuler, Ianina Hamel, Jérémie Turney, Shaun Magnuson, Elisse Lévesque, Roger Greer, Charles W. Whyte, Lyle G. |
spellingShingle |
Altshuler, Ianina Hamel, Jérémie Turney, Shaun Magnuson, Elisse Lévesque, Roger Greer, Charles W. Whyte, Lyle G. Species interactions and distinct microbial communities in high Arctic permafrost affected cryosols are associated with the CH 4 and CO 2 gas fluxes |
author_facet |
Altshuler, Ianina Hamel, Jérémie Turney, Shaun Magnuson, Elisse Lévesque, Roger Greer, Charles W. Whyte, Lyle G. |
author_sort |
Altshuler, Ianina |
title |
Species interactions and distinct microbial communities in high Arctic permafrost affected cryosols are associated with the CH 4 and CO 2 gas fluxes |
title_short |
Species interactions and distinct microbial communities in high Arctic permafrost affected cryosols are associated with the CH 4 and CO 2 gas fluxes |
title_full |
Species interactions and distinct microbial communities in high Arctic permafrost affected cryosols are associated with the CH 4 and CO 2 gas fluxes |
title_fullStr |
Species interactions and distinct microbial communities in high Arctic permafrost affected cryosols are associated with the CH 4 and CO 2 gas fluxes |
title_full_unstemmed |
Species interactions and distinct microbial communities in high Arctic permafrost affected cryosols are associated with the CH 4 and CO 2 gas fluxes |
title_sort |
species interactions and distinct microbial communities in high arctic permafrost affected cryosols are associated with the ch 4 and co 2 gas fluxes |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/1462-2920.14715 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.14715 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.14715 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.14715 |
genre |
Ice permafrost wedge* |
genre_facet |
Ice permafrost wedge* |
op_source |
Environmental Microbiology volume 21, issue 10, page 3711-3727 ISSN 1462-2912 1462-2920 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1462-2920.14715 |
container_title |
Environmental Microbiology |
container_volume |
21 |
container_issue |
10 |
container_start_page |
3711 |
op_container_end_page |
3727 |
_version_ |
1810449215355092992 |