Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration
Abstract Background Vegetation change in high latitude tundra ecosystems is expected to accelerate due to increased wildfire activity. High-severity fires increase the availability of mineral soil seedbeds, which facilitates recruitment, yet fire also alters soil microbial composition, which could s...
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ftbiomed:oai:biomedcentral.com:s12898-016-0075-y 2023-05-15T14:46:36+02:00 Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration Hewitt, Rebecca Hollingsworth, Teresa Stuart Chapin III, F. Lee Taylor, D. 2016-05-11 http://www.biomedcentral.com/1472-6785/16/25 en eng BioMed Central Ltd. http://www.biomedcentral.com/1472-6785/16/25 Copyright 2016 Hewitt et al. Alnus viridis Arctic tundra ARISA Climate change Fire severity Fungal internal transcribed spacer (ITS) Picea mariana Shrub expansion Treeline Research Article 2016 ftbiomed 2016-05-14T23:59:59Z Abstract Background Vegetation change in high latitude tundra ecosystems is expected to accelerate due to increased wildfire activity. High-severity fires increase the availability of mineral soil seedbeds, which facilitates recruitment, yet fire also alters soil microbial composition, which could significantly impact seedling establishment. Results We investigated the effects of fire severity on soil biota and associated effects on plant performance for two plant species predicted to expand into Arctic tundra. We inoculated seedlings in a growth chamber experiment with soils collected from the largest tundra fire recorded in the Arctic and used molecular tools to characterize root-associated fungal communities. Seedling biomass was significantly related to the composition of fungal inoculum. Biomass decreased as fire severity increased and the proportion of pathogenic fungi increased. Conclusions Our results suggest that effects of fire severity on soil biota reduces seedling performance and thus we hypothesize that in certain ecological contexts fire-severity effects on plant–fungal interactions may dampen the expected increases in tree and shrub establishment after tundra fire. Article in Journal/Newspaper Arctic Climate change Tundra BioMed Central Arctic |
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Open Polar |
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BioMed Central |
op_collection_id |
ftbiomed |
language |
English |
topic |
Alnus viridis Arctic tundra ARISA Climate change Fire severity Fungal internal transcribed spacer (ITS) Picea mariana Shrub expansion Treeline |
spellingShingle |
Alnus viridis Arctic tundra ARISA Climate change Fire severity Fungal internal transcribed spacer (ITS) Picea mariana Shrub expansion Treeline Hewitt, Rebecca Hollingsworth, Teresa Stuart Chapin III, F. Lee Taylor, D. Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration |
topic_facet |
Alnus viridis Arctic tundra ARISA Climate change Fire severity Fungal internal transcribed spacer (ITS) Picea mariana Shrub expansion Treeline |
description |
Abstract Background Vegetation change in high latitude tundra ecosystems is expected to accelerate due to increased wildfire activity. High-severity fires increase the availability of mineral soil seedbeds, which facilitates recruitment, yet fire also alters soil microbial composition, which could significantly impact seedling establishment. Results We investigated the effects of fire severity on soil biota and associated effects on plant performance for two plant species predicted to expand into Arctic tundra. We inoculated seedlings in a growth chamber experiment with soils collected from the largest tundra fire recorded in the Arctic and used molecular tools to characterize root-associated fungal communities. Seedling biomass was significantly related to the composition of fungal inoculum. Biomass decreased as fire severity increased and the proportion of pathogenic fungi increased. Conclusions Our results suggest that effects of fire severity on soil biota reduces seedling performance and thus we hypothesize that in certain ecological contexts fire-severity effects on plant–fungal interactions may dampen the expected increases in tree and shrub establishment after tundra fire. |
format |
Article in Journal/Newspaper |
author |
Hewitt, Rebecca Hollingsworth, Teresa Stuart Chapin III, F. Lee Taylor, D. |
author_facet |
Hewitt, Rebecca Hollingsworth, Teresa Stuart Chapin III, F. Lee Taylor, D. |
author_sort |
Hewitt, Rebecca |
title |
Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration |
title_short |
Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration |
title_full |
Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration |
title_fullStr |
Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration |
title_full_unstemmed |
Fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration |
title_sort |
fire-severity effects on plant–fungal interactions after a novel tundra wildfire disturbance: implications for arctic shrub and tree migration |
publisher |
BioMed Central Ltd. |
publishDate |
2016 |
url |
http://www.biomedcentral.com/1472-6785/16/25 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change Tundra |
genre_facet |
Arctic Climate change Tundra |
op_relation |
http://www.biomedcentral.com/1472-6785/16/25 |
op_rights |
Copyright 2016 Hewitt et al. |
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