Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient

Summary Biogenic production and release of methane (CH 4 ) from thawing permafrost has the potential to be a strong source of radiative forcing. We investigated changes in the active layer microbial community of three sites representative of distinct permafrost thaw stages at a palsa mire in norther...

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Published in:Environmental Microbiology
Main Authors: Mondav, Rhiannon, McCalley, Carmody K., Hodgkins, Suzanne B., Frolking, Steve, Saleska, Scott R., Rich, Virginia I., Chanton, Jeff P., Crill, Patrick M.
Other Authors: Australian Research Council
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2017
Subjects:
Online Access:http://dx.doi.org/10.1111/1462-2920.13809
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spelling crwiley:10.1111/1462-2920.13809 2024-09-30T14:40:18+00:00 Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient Mondav, Rhiannon McCalley, Carmody K. Hodgkins, Suzanne B. Frolking, Steve Saleska, Scott R. Rich, Virginia I. Chanton, Jeff P. Crill, Patrick M. Australian Research Council 2017 http://dx.doi.org/10.1111/1462-2920.13809 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.13809 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.13809 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.13809 https://sfamjournals.onlinelibrary.wiley.com/doi/am-pdf/10.1111/1462-2920.13809 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 19, issue 8, page 3201-3218 ISSN 1462-2912 1462-2920 journal-article 2017 crwiley https://doi.org/10.1111/1462-2920.13809 2024-09-11T04:12:25Z Summary Biogenic production and release of methane (CH 4 ) from thawing permafrost has the potential to be a strong source of radiative forcing. We investigated changes in the active layer microbial community of three sites representative of distinct permafrost thaw stages at a palsa mire in northern Sweden. The palsa site (intact permafrost and low radiative forcing signature) had a phylogenetically clustered community dominated by Acidobacteria and Proteobacteria . The bog (thawing permafrost and low radiative forcing signature) had lower alpha diversity and midrange phylogenetic clustering, characteristic of ecosystem disturbance affecting habitat filtering. Hydrogenotrophic methanogens and Acidobacteria dominated the bog shifting from palsa‐like to fen‐like at the waterline. The fen (no underlying permafrost, high radiative forcing signature) had the highest alpha, beta and phylogenetic diversity, was dominated by Proteobacteria and Euryarchaeota and was significantly enriched in methanogens. The Mire microbial network was modular with module cores consisting of clusters of Acidobacteria , Euryarchaeota or Xanthomonodales . Loss of underlying permafrost with associated hydrological shifts correlated to changes in microbial composition, alpha, beta and phylogenetic diversity associated with a higher radiative forcing signature. These results support the complex role of microbial interactions in mediating carbon budget changes and climate feedback in response to climate forcing. Article in Journal/Newspaper Northern Sweden palsa permafrost Wiley Online Library Environmental Microbiology 19 8 3201 3218
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description Summary Biogenic production and release of methane (CH 4 ) from thawing permafrost has the potential to be a strong source of radiative forcing. We investigated changes in the active layer microbial community of three sites representative of distinct permafrost thaw stages at a palsa mire in northern Sweden. The palsa site (intact permafrost and low radiative forcing signature) had a phylogenetically clustered community dominated by Acidobacteria and Proteobacteria . The bog (thawing permafrost and low radiative forcing signature) had lower alpha diversity and midrange phylogenetic clustering, characteristic of ecosystem disturbance affecting habitat filtering. Hydrogenotrophic methanogens and Acidobacteria dominated the bog shifting from palsa‐like to fen‐like at the waterline. The fen (no underlying permafrost, high radiative forcing signature) had the highest alpha, beta and phylogenetic diversity, was dominated by Proteobacteria and Euryarchaeota and was significantly enriched in methanogens. The Mire microbial network was modular with module cores consisting of clusters of Acidobacteria , Euryarchaeota or Xanthomonodales . Loss of underlying permafrost with associated hydrological shifts correlated to changes in microbial composition, alpha, beta and phylogenetic diversity associated with a higher radiative forcing signature. These results support the complex role of microbial interactions in mediating carbon budget changes and climate feedback in response to climate forcing.
author2 Australian Research Council
format Article in Journal/Newspaper
author Mondav, Rhiannon
McCalley, Carmody K.
Hodgkins, Suzanne B.
Frolking, Steve
Saleska, Scott R.
Rich, Virginia I.
Chanton, Jeff P.
Crill, Patrick M.
spellingShingle Mondav, Rhiannon
McCalley, Carmody K.
Hodgkins, Suzanne B.
Frolking, Steve
Saleska, Scott R.
Rich, Virginia I.
Chanton, Jeff P.
Crill, Patrick M.
Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient
author_facet Mondav, Rhiannon
McCalley, Carmody K.
Hodgkins, Suzanne B.
Frolking, Steve
Saleska, Scott R.
Rich, Virginia I.
Chanton, Jeff P.
Crill, Patrick M.
author_sort Mondav, Rhiannon
title Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient
title_short Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient
title_full Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient
title_fullStr Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient
title_full_unstemmed Microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient
title_sort microbial network, phylogenetic diversity and community membership in the active layer across a permafrost thaw gradient
publisher Wiley
publishDate 2017
url http://dx.doi.org/10.1111/1462-2920.13809
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https://sfamjournals.onlinelibrary.wiley.com/doi/am-pdf/10.1111/1462-2920.13809
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op_source Environmental Microbiology
volume 19, issue 8, page 3201-3218
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