Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates
Thawing permafrost can stimulate microbial activity, leading to faster decomposition of formerly preserved organic matter and CO 2 release. Detailed knowledge about the vertical distribution of the responsible microbial community that is changing with increasing soil depth is limited. In this study,...
Published in: | Environmental Microbiology |
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2018
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Online Access: | https://pure.au.dk/portal/da/publications/disentangling-the-complexity-of-permafrost-soil-by-using-high-resolution-profiling-of-microbial-community-composition-key-functions-and-respiration-rates(3436a151-0d36-4443-a0e7-1e706e2eec2f).html https://doi.org/10.1111/1462-2920.14348 http://www.scopus.com/inward/record.url?scp=85051040268&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/3436a151-0d36-4443-a0e7-1e706e2eec2f 2023-05-15T15:09:07+02:00 Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates Müller, Oliver Bang-Andreasen, Toke White, Richard Allen Elberling, Bo Taş, Neslihan Kneafsey, Timothy Jansson, Janet K. Øvreås, Lise 2018 https://pure.au.dk/portal/da/publications/disentangling-the-complexity-of-permafrost-soil-by-using-high-resolution-profiling-of-microbial-community-composition-key-functions-and-respiration-rates(3436a151-0d36-4443-a0e7-1e706e2eec2f).html https://doi.org/10.1111/1462-2920.14348 http://www.scopus.com/inward/record.url?scp=85051040268&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Müller , O , Bang-Andreasen , T , White , R A , Elberling , B , Taş , N , Kneafsey , T , Jansson , J K & Øvreås , L 2018 , ' Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates ' , Environmental Microbiology , vol. 20 , no. 12 , pp. 4328-4342 . https://doi.org/10.1111/1462-2920.14348 article 2018 ftuniaarhuspubl https://doi.org/10.1111/1462-2920.14348 2023-03-08T23:56:18Z Thawing permafrost can stimulate microbial activity, leading to faster decomposition of formerly preserved organic matter and CO 2 release. Detailed knowledge about the vertical distribution of the responsible microbial community that is changing with increasing soil depth is limited. In this study, we determined the microbial community composition from cores sampled in a high Arctic heath at Svalbard, Norway; spanning from the active layer (AL) into the permafrost layer (PL). A special aim has been on identifying a layer of recently thawed soil, the transition zone (TZ), which might provide new insights into the fate of thawing permafrost. A unique sampling strategy allowed us to observe a diverse and gradually shifting microbial community in the AL, a Bacteroidetes dominated community in the TZ and throughout the PL, a community strongly dominated by a single Actinobacteria family (Intrasporangiaceae). The contrasting abundances of these two taxa caused a community difference of about 60%, just within 3 cm from TZ to PL. We incubated subsamples at about 5°C and measured highest CO 2 production rates under aerobic incubations, yet contrasting for five different layers and correlating to the microbial community composition. This high resolution strategy provides new insights on how microbial communities are structured in permafrost and a better understanding of how they respond to thaw. Article in Journal/Newspaper Arctic permafrost Svalbard Aarhus University: Research Arctic Norway Svalbard Environmental Microbiology 20 12 4328 4342 |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
Thawing permafrost can stimulate microbial activity, leading to faster decomposition of formerly preserved organic matter and CO 2 release. Detailed knowledge about the vertical distribution of the responsible microbial community that is changing with increasing soil depth is limited. In this study, we determined the microbial community composition from cores sampled in a high Arctic heath at Svalbard, Norway; spanning from the active layer (AL) into the permafrost layer (PL). A special aim has been on identifying a layer of recently thawed soil, the transition zone (TZ), which might provide new insights into the fate of thawing permafrost. A unique sampling strategy allowed us to observe a diverse and gradually shifting microbial community in the AL, a Bacteroidetes dominated community in the TZ and throughout the PL, a community strongly dominated by a single Actinobacteria family (Intrasporangiaceae). The contrasting abundances of these two taxa caused a community difference of about 60%, just within 3 cm from TZ to PL. We incubated subsamples at about 5°C and measured highest CO 2 production rates under aerobic incubations, yet contrasting for five different layers and correlating to the microbial community composition. This high resolution strategy provides new insights on how microbial communities are structured in permafrost and a better understanding of how they respond to thaw. |
format |
Article in Journal/Newspaper |
author |
Müller, Oliver Bang-Andreasen, Toke White, Richard Allen Elberling, Bo Taş, Neslihan Kneafsey, Timothy Jansson, Janet K. Øvreås, Lise |
spellingShingle |
Müller, Oliver Bang-Andreasen, Toke White, Richard Allen Elberling, Bo Taş, Neslihan Kneafsey, Timothy Jansson, Janet K. Øvreås, Lise Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates |
author_facet |
Müller, Oliver Bang-Andreasen, Toke White, Richard Allen Elberling, Bo Taş, Neslihan Kneafsey, Timothy Jansson, Janet K. Øvreås, Lise |
author_sort |
Müller, Oliver |
title |
Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates |
title_short |
Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates |
title_full |
Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates |
title_fullStr |
Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates |
title_full_unstemmed |
Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates |
title_sort |
disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates |
publishDate |
2018 |
url |
https://pure.au.dk/portal/da/publications/disentangling-the-complexity-of-permafrost-soil-by-using-high-resolution-profiling-of-microbial-community-composition-key-functions-and-respiration-rates(3436a151-0d36-4443-a0e7-1e706e2eec2f).html https://doi.org/10.1111/1462-2920.14348 http://www.scopus.com/inward/record.url?scp=85051040268&partnerID=8YFLogxK |
geographic |
Arctic Norway Svalbard |
geographic_facet |
Arctic Norway Svalbard |
genre |
Arctic permafrost Svalbard |
genre_facet |
Arctic permafrost Svalbard |
op_source |
Müller , O , Bang-Andreasen , T , White , R A , Elberling , B , Taş , N , Kneafsey , T , Jansson , J K & Øvreås , L 2018 , ' Disentangling the complexity of permafrost soil by using high resolution profiling of microbial community composition, key functions and respiration rates ' , Environmental Microbiology , vol. 20 , no. 12 , pp. 4328-4342 . https://doi.org/10.1111/1462-2920.14348 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/1462-2920.14348 |
container_title |
Environmental Microbiology |
container_volume |
20 |
container_issue |
12 |
container_start_page |
4328 |
op_container_end_page |
4342 |
_version_ |
1766340356287234048 |