Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra
Vegetation change of the Arctic tundra due to global warming is a well-known process, but the implication for the belowground microbial communities, key in nutrient cycling and decomposition, is poorly understood. We characterized the fungal and bacterial abundances in litter and soil layers across...
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Canadian Science Publishing (NRC Research Press)
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ftluke:oai:jukuri.luke.fi:10024/551254 2023-10-09T21:47:27+02:00 Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra Jeanbille, Mathilde Clemmensen, Karina Juhanson, Jaanis Michelsen, Anders Cooper, Elisabeth J. Henry, Greg H.R. Hofgaard, Annika Hollister, Robert D. Jónsdóttir, Ingibjörg S. Klanderud, Kari Tolvanen, Anne Hallin, Sara orcid:0000-0002-5304-7510 4100610210 Luonnonvarakeskus 14 p. true https://jukuri.luke.fi/handle/10024/551254 en eng Canadian Science Publishing (NRC Research Press) Arctic science 10.1139/as-2020-0053 2368-7460 https://jukuri.luke.fi/handle/10024/551254 URN:NBN:fi-fe2021122262934 CC BY 4.0 tundra warming litter soil microbial abundance stable isotopes publication fi=A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä|sv=A1 Originalartikel i en vetenskaplig tidskrift|en=A1 Journal article (refereed), original research| fi=Publisher's version|sv=Publisher's version|en=Publisher's version| ftluke 2023-09-12T20:28:09Z Vegetation change of the Arctic tundra due to global warming is a well-known process, but the implication for the belowground microbial communities, key in nutrient cycling and decomposition, is poorly understood. We characterized the fungal and bacterial abundances in litter and soil layers across 16 warming experimental sites at 12 circumpolar locations. We investigated the relationship between microbial abundances and nitrogen (N) and carbon (C) isotopic signatures, indicating shifts in microbial processes with warming. Microbial abundances were 2–3 orders of magnitude larger in litter than in soil. Local, site-dependent responses of microbial abundances were variable, and no general effect of warming was detected. The only generalizable trend across sites was a dependence between the warming response ratios and C:N ratio in controls, highlighting a legacy of the vegetation on the microbial response to warming. We detected a positive effect of warming on the litter mass and δ15N, which was linked to bacterial abundance under warmed conditions. This effect was stronger in experimental sites dominated by deciduous shrubs, suggesting an altered bacterial N-cycling with increased temperatures, mediated by the vegetation, and with possible consequences on ecosystem feedbacks to climate change. 2021 Article in Journal/Newspaper Arctic Arctic Climate change Global warming Tundra Natural Resources Institute Finland: Jukuri Arctic |
institution |
Open Polar |
collection |
Natural Resources Institute Finland: Jukuri |
op_collection_id |
ftluke |
language |
English |
topic |
tundra warming litter soil microbial abundance stable isotopes |
spellingShingle |
tundra warming litter soil microbial abundance stable isotopes Jeanbille, Mathilde Clemmensen, Karina Juhanson, Jaanis Michelsen, Anders Cooper, Elisabeth J. Henry, Greg H.R. Hofgaard, Annika Hollister, Robert D. Jónsdóttir, Ingibjörg S. Klanderud, Kari Tolvanen, Anne Hallin, Sara Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra |
topic_facet |
tundra warming litter soil microbial abundance stable isotopes |
description |
Vegetation change of the Arctic tundra due to global warming is a well-known process, but the implication for the belowground microbial communities, key in nutrient cycling and decomposition, is poorly understood. We characterized the fungal and bacterial abundances in litter and soil layers across 16 warming experimental sites at 12 circumpolar locations. We investigated the relationship between microbial abundances and nitrogen (N) and carbon (C) isotopic signatures, indicating shifts in microbial processes with warming. Microbial abundances were 2–3 orders of magnitude larger in litter than in soil. Local, site-dependent responses of microbial abundances were variable, and no general effect of warming was detected. The only generalizable trend across sites was a dependence between the warming response ratios and C:N ratio in controls, highlighting a legacy of the vegetation on the microbial response to warming. We detected a positive effect of warming on the litter mass and δ15N, which was linked to bacterial abundance under warmed conditions. This effect was stronger in experimental sites dominated by deciduous shrubs, suggesting an altered bacterial N-cycling with increased temperatures, mediated by the vegetation, and with possible consequences on ecosystem feedbacks to climate change. 2021 |
author2 |
orcid:0000-0002-5304-7510 4100610210 Luonnonvarakeskus |
format |
Article in Journal/Newspaper |
author |
Jeanbille, Mathilde Clemmensen, Karina Juhanson, Jaanis Michelsen, Anders Cooper, Elisabeth J. Henry, Greg H.R. Hofgaard, Annika Hollister, Robert D. Jónsdóttir, Ingibjörg S. Klanderud, Kari Tolvanen, Anne Hallin, Sara |
author_facet |
Jeanbille, Mathilde Clemmensen, Karina Juhanson, Jaanis Michelsen, Anders Cooper, Elisabeth J. Henry, Greg H.R. Hofgaard, Annika Hollister, Robert D. Jónsdóttir, Ingibjörg S. Klanderud, Kari Tolvanen, Anne Hallin, Sara |
author_sort |
Jeanbille, Mathilde |
title |
Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra |
title_short |
Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra |
title_full |
Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra |
title_fullStr |
Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra |
title_full_unstemmed |
Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across Arctic and alpine tundra |
title_sort |
site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across arctic and alpine tundra |
publisher |
Canadian Science Publishing (NRC Research Press) |
url |
https://jukuri.luke.fi/handle/10024/551254 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Climate change Global warming Tundra |
genre_facet |
Arctic Arctic Climate change Global warming Tundra |
op_relation |
Arctic science 10.1139/as-2020-0053 2368-7460 https://jukuri.luke.fi/handle/10024/551254 URN:NBN:fi-fe2021122262934 |
op_rights |
CC BY 4.0 |
_version_ |
1779310541917913088 |