The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types
Abstract Due to climate change, increased microbial activity in high-latitude soils may lead to higher greenhouse gas (GHG) emissions. However, microbial GHG production and consumption mechanisms in tundra soils are not thoroughly understood. To investigate how the diversity and functional potential...
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ftunivoulu:oai:oulu.fi:nbnfi-fe2023022228306 2023-07-30T04:01:30+02:00 The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types Viitamäki, S. (Sirja) Pessi, I. S. (Igor S.) Virkkala, A.-M. (Anna-Maria) Niittynen, P. (Pekka) Kemppinen, J. (Julia) Eronen-Rasimus, E. (Eeva) Luoto, M. (Miska) Hultman, J. (Jenni) 2022 application/pdf http://urn.fi/urn:nbn:fi-fe2023022228306 eng eng Oxford University Press info:eu-repo/semantics/openAccess © The Author(s) 2022. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/ climate change microbial communities microbial ecology transcriptomics tundra info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftunivoulu 2023-07-08T20:01:03Z Abstract Due to climate change, increased microbial activity in high-latitude soils may lead to higher greenhouse gas (GHG) emissions. However, microbial GHG production and consumption mechanisms in tundra soils are not thoroughly understood. To investigate how the diversity and functional potential of bacterial and archaeal communities vary across vegetation types and soil layers, we analyzed 116 soil metatranscriptomes from 73 sites in the Finnish sub-Arctic. Meadow soils were characterized by higher pH and lower soil organic matter (SOM) and carbon/nitrogen ratio. By contrast, dwarf shrub-dominated ecosystems had higher SOM and lower pH. Although Actinobacteria, Acidobacteria, Alphaproteobacteria and Planctomycetes were dominant in all communities, there were significant differences at the genus level between vegetation types; plant polymer-degrading groups were more active in shrub-dominated soils than in meadows. Given that climate-change scenarios predict the expansion of shrubs at high latitudes, our results indicate that tundra soil microbial communities harbor potential decomposers of increased plant litter, which may affect the rate of carbon turnover in tundra soils. Additionally, transcripts of methanotrophs were detected in the mineral layer of all soils, which may moderate methane fluxes. This study provides new insights into possible shifts in tundra microbial diversity and activity due to climate change. Article in Journal/Newspaper Arctic Climate change Tundra Jultika - University of Oulu repository Arctic |
institution |
Open Polar |
collection |
Jultika - University of Oulu repository |
op_collection_id |
ftunivoulu |
language |
English |
topic |
climate change microbial communities microbial ecology transcriptomics tundra |
spellingShingle |
climate change microbial communities microbial ecology transcriptomics tundra Viitamäki, S. (Sirja) Pessi, I. S. (Igor S.) Virkkala, A.-M. (Anna-Maria) Niittynen, P. (Pekka) Kemppinen, J. (Julia) Eronen-Rasimus, E. (Eeva) Luoto, M. (Miska) Hultman, J. (Jenni) The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types |
topic_facet |
climate change microbial communities microbial ecology transcriptomics tundra |
description |
Abstract Due to climate change, increased microbial activity in high-latitude soils may lead to higher greenhouse gas (GHG) emissions. However, microbial GHG production and consumption mechanisms in tundra soils are not thoroughly understood. To investigate how the diversity and functional potential of bacterial and archaeal communities vary across vegetation types and soil layers, we analyzed 116 soil metatranscriptomes from 73 sites in the Finnish sub-Arctic. Meadow soils were characterized by higher pH and lower soil organic matter (SOM) and carbon/nitrogen ratio. By contrast, dwarf shrub-dominated ecosystems had higher SOM and lower pH. Although Actinobacteria, Acidobacteria, Alphaproteobacteria and Planctomycetes were dominant in all communities, there were significant differences at the genus level between vegetation types; plant polymer-degrading groups were more active in shrub-dominated soils than in meadows. Given that climate-change scenarios predict the expansion of shrubs at high latitudes, our results indicate that tundra soil microbial communities harbor potential decomposers of increased plant litter, which may affect the rate of carbon turnover in tundra soils. Additionally, transcripts of methanotrophs were detected in the mineral layer of all soils, which may moderate methane fluxes. This study provides new insights into possible shifts in tundra microbial diversity and activity due to climate change. |
format |
Article in Journal/Newspaper |
author |
Viitamäki, S. (Sirja) Pessi, I. S. (Igor S.) Virkkala, A.-M. (Anna-Maria) Niittynen, P. (Pekka) Kemppinen, J. (Julia) Eronen-Rasimus, E. (Eeva) Luoto, M. (Miska) Hultman, J. (Jenni) |
author_facet |
Viitamäki, S. (Sirja) Pessi, I. S. (Igor S.) Virkkala, A.-M. (Anna-Maria) Niittynen, P. (Pekka) Kemppinen, J. (Julia) Eronen-Rasimus, E. (Eeva) Luoto, M. (Miska) Hultman, J. (Jenni) |
author_sort |
Viitamäki, S. (Sirja) |
title |
The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types |
title_short |
The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types |
title_full |
The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types |
title_fullStr |
The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types |
title_full_unstemmed |
The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types |
title_sort |
activity and functions of soil microbial communities in the finnish sub-arctic vary across vegetation types |
publisher |
Oxford University Press |
publishDate |
2022 |
url |
http://urn.fi/urn:nbn:fi-fe2023022228306 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Tundra |
genre_facet |
Arctic Climate change Tundra |
op_rights |
info:eu-repo/semantics/openAccess © The Author(s) 2022. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/ |
_version_ |
1772812284370878464 |