Decoupling of microbial community dynamics and functions in Arctic peat soil exposed to short term warming
Temperature is an important factor governing microbe-mediated carbon feedback from permafrost soils. The link between taxonomic and functional microbial responses to temperature change remains elusive due to the lack of studies assessing both aspects of microbial ecology. Our previous study reported...
Published in: | Molecular Ecology |
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5007480 2023-05-15T14:58:45+02:00 Decoupling of microbial community dynamics and functions in Arctic peat soil exposed to short term warming Yang, S. Liebner, S. Svenning, M. Tøsdal Tveit, A. 2021 application/pdf https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007480 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007480_2/component/file_5008467/5007480.pdf unknown info:eu-repo/semantics/altIdentifier/doi/10.1111/mec.16118 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007480 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007480_2/component/file_5008467/5007480.pdf info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ CC-BY Molecular Ecology info:eu-repo/semantics/article 2021 ftgfzpotsdam https://doi.org/10.1111/mec.16118 2022-09-14T05:57:54Z Temperature is an important factor governing microbe-mediated carbon feedback from permafrost soils. The link between taxonomic and functional microbial responses to temperature change remains elusive due to the lack of studies assessing both aspects of microbial ecology. Our previous study reported microbial metabolic and trophic shifts in response to short-term temperature increases in Arctic peat soil, and linked these shifts to higher CH4 and CO2 production rates (Tveit et al., 2015). Here, we studied the taxonomic composition and functional potential of samples from the same experiment. We see that along a high-resolution temperature gradient (1 – 30 °C), microbial communities change discretely, but not continuously or stochastically, in response to rising temperatures. The taxonomic variability may thus in part reflect the varied temperature responses of individual taxa and the competition between these taxa for resources. These taxonomic responses contrast the stable functional potential (metagenomics-based) across all temperatures or the previously observed metabolic or trophic shifts at key temperatures. Furthermore, with rising temperatures we observed a progressive decrease in species diversity (Shannon Index) and increased dispersion of greenhouse gas (GHG) production rates. We conclude that the taxonomic variation is decoupled from both the functional potential of the community and the previously observed temperature-dependent changes in microbial function. However, the reduced diversity at higher temperatures might help explain the higher variability in GHG production at higher temperatures. Article in Journal/Newspaper Arctic permafrost GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Arctic Molecular Ecology |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
unknown |
description |
Temperature is an important factor governing microbe-mediated carbon feedback from permafrost soils. The link between taxonomic and functional microbial responses to temperature change remains elusive due to the lack of studies assessing both aspects of microbial ecology. Our previous study reported microbial metabolic and trophic shifts in response to short-term temperature increases in Arctic peat soil, and linked these shifts to higher CH4 and CO2 production rates (Tveit et al., 2015). Here, we studied the taxonomic composition and functional potential of samples from the same experiment. We see that along a high-resolution temperature gradient (1 – 30 °C), microbial communities change discretely, but not continuously or stochastically, in response to rising temperatures. The taxonomic variability may thus in part reflect the varied temperature responses of individual taxa and the competition between these taxa for resources. These taxonomic responses contrast the stable functional potential (metagenomics-based) across all temperatures or the previously observed metabolic or trophic shifts at key temperatures. Furthermore, with rising temperatures we observed a progressive decrease in species diversity (Shannon Index) and increased dispersion of greenhouse gas (GHG) production rates. We conclude that the taxonomic variation is decoupled from both the functional potential of the community and the previously observed temperature-dependent changes in microbial function. However, the reduced diversity at higher temperatures might help explain the higher variability in GHG production at higher temperatures. |
format |
Article in Journal/Newspaper |
author |
Yang, S. Liebner, S. Svenning, M. Tøsdal Tveit, A. |
spellingShingle |
Yang, S. Liebner, S. Svenning, M. Tøsdal Tveit, A. Decoupling of microbial community dynamics and functions in Arctic peat soil exposed to short term warming |
author_facet |
Yang, S. Liebner, S. Svenning, M. Tøsdal Tveit, A. |
author_sort |
Yang, S. |
title |
Decoupling of microbial community dynamics and functions in Arctic peat soil exposed to short term warming |
title_short |
Decoupling of microbial community dynamics and functions in Arctic peat soil exposed to short term warming |
title_full |
Decoupling of microbial community dynamics and functions in Arctic peat soil exposed to short term warming |
title_fullStr |
Decoupling of microbial community dynamics and functions in Arctic peat soil exposed to short term warming |
title_full_unstemmed |
Decoupling of microbial community dynamics and functions in Arctic peat soil exposed to short term warming |
title_sort |
decoupling of microbial community dynamics and functions in arctic peat soil exposed to short term warming |
publishDate |
2021 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007480 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007480_2/component/file_5008467/5007480.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Molecular Ecology |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/mec.16118 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007480 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5007480_2/component/file_5008467/5007480.pdf |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/mec.16118 |
container_title |
Molecular Ecology |
_version_ |
1766330880510394368 |