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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Online Access: | https://hdl.handle.net/10037/21476 https://doi.org/10.1139/AS-2020-0053 |
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ftunivtroemsoe:oai:munin.uit.no:10037/21476 2023-05-15T14:21:39+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 E Juhanson, Jaanis Michelsen, Anders Cooper, Elisabeth J. Henry, Greg H.R. Hofgaard, Annika Hollister, Robert D. Jónsdóttir, Ingibjörg Svala Klanderud, Kari Tolvanen, Anne Hallin, Sara 2021-04-01 https://hdl.handle.net/10037/21476 https://doi.org/10.1139/AS-2020-0053 eng eng Canadian Science Publishing Arctic Science Jeanbille, Clemmensen KE, Juhanson, Michelsen A, Cooper E.J., Henry GH, Hofgaard A, Hollister RD, Jónsdóttir IS, Klanderud K, Tolvanen A, Hallin S. Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across arctic and alpine tundra. Arctic Science. 2021 FRIDAID 1903243 doi:10.1139/AS-2020-0053 2368-7460 https://hdl.handle.net/10037/21476 openAccess Copyright 2021 The Author(s) VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2021 ftunivtroemsoe https://doi.org/10.1139/AS-2020-0053 2021-06-25T17:58:10Z 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 magnitudes 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. Article in Journal/Newspaper Arctic Arctic Climate change Global warming Tundra University of Tromsø: Munin Open Research Archive Arctic Arctic Science |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 |
spellingShingle |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 Jeanbille, Mathilde Clemmensen, Karina E Juhanson, Jaanis Michelsen, Anders Cooper, Elisabeth J. Henry, Greg H.R. Hofgaard, Annika Hollister, Robert D. Jónsdóttir, Ingibjörg Svala 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 |
VDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480 VDP::Mathematics and natural scienses: 400::Zoology and botany: 480 |
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 magnitudes 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. |
format |
Article in Journal/Newspaper |
author |
Jeanbille, Mathilde Clemmensen, Karina E Juhanson, Jaanis Michelsen, Anders Cooper, Elisabeth J. Henry, Greg H.R. Hofgaard, Annika Hollister, Robert D. Jónsdóttir, Ingibjörg Svala Klanderud, Kari Tolvanen, Anne Hallin, Sara |
author_facet |
Jeanbille, Mathilde Clemmensen, Karina E Juhanson, Jaanis Michelsen, Anders Cooper, Elisabeth J. Henry, Greg H.R. Hofgaard, Annika Hollister, Robert D. Jónsdóttir, Ingibjörg Svala 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 |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/21476 https://doi.org/10.1139/AS-2020-0053 |
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 Jeanbille, Clemmensen KE, Juhanson, Michelsen A, Cooper E.J., Henry GH, Hofgaard A, Hollister RD, Jónsdóttir IS, Klanderud K, Tolvanen A, Hallin S. Site-specific responses of fungal and bacterial abundances to experimental warming in litter and soil across arctic and alpine tundra. Arctic Science. 2021 FRIDAID 1903243 doi:10.1139/AS-2020-0053 2368-7460 https://hdl.handle.net/10037/21476 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1139/AS-2020-0053 |
container_title |
Arctic Science |
_version_ |
1766294375997898752 |