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/11250/2991157 https://doi.org/10.1139/AS-2020-0053 |
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ftunivmob:oai:nmbu.brage.unit.no:11250/2991157 2023-05-15T14:20:00+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 2021-04-09T14:41:08Z application/pdf https://hdl.handle.net/11250/2991157 https://doi.org/10.1139/AS-2020-0053 eng eng Norges forskningsråd: . 176065 Arctic Science. 2021. urn:issn:2368-7460 https://hdl.handle.net/11250/2991157 https://doi.org/10.1139/AS-2020-0053 cristin:1903243 Arctic Science VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Journal article Peer reviewed 2021 ftunivmob https://doi.org/10.1139/AS-2020-0053 2022-04-20T22:40:56Z 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. publishedVersion Article in Journal/Newspaper Arctic Arctic Climate change Global warming Tundra Open archive Norwegian University of Life Sciences: Brage NMBU Arctic Arctic Science 1 14 |
institution |
Open Polar |
collection |
Open archive Norwegian University of Life Sciences: Brage NMBU |
op_collection_id |
ftunivmob |
language |
English |
topic |
VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
VDP::Zoologiske og botaniske fag: 480 VDP::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::Zoologiske og botaniske fag: 480 VDP::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. publishedVersion |
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 |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2991157 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_source |
Arctic Science |
op_relation |
Norges forskningsråd: . 176065 Arctic Science. 2021. urn:issn:2368-7460 https://hdl.handle.net/11250/2991157 https://doi.org/10.1139/AS-2020-0053 cristin:1903243 |
op_doi |
https://doi.org/10.1139/AS-2020-0053 |
container_title |
Arctic Science |
container_start_page |
1 |
op_container_end_page |
14 |
_version_ |
1766291732984496128 |