Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem
Shrub encroachment and soil respiration (SR) are predicted to increase in the tundra ecosystem under climate warming, but little is known regarding potential causal relationships between shrubs and SR at a local scale. Multiple and complex belowground processes exist between the two phenomena, and c...
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ftnipr:oai:nipr.repo.nii.ac.jp:00016417 2023-05-15T15:04:20+02:00 Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem 2021-03 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16417 http://id.nii.ac.jp/1291/00016295/ en eng https://doi.org/10.1016/j.polar.2020.100562 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16417 http://id.nii.ac.jp/1291/00016295/ Polar Science, 100562(2021-03) 18739652 Shrub coverage Soil respiration Sub-Arctic tundra Structural equation modeling Journal Article 2021 ftnipr https://doi.org/10.1016/j.polar.2020.100562 2022-12-03T19:43:21Z Shrub encroachment and soil respiration (SR) are predicted to increase in the tundra ecosystem under climate warming, but little is known regarding potential causal relationships between shrubs and SR at a local scale. Multiple and complex belowground processes exist between the two phenomena, and consolidation is logistically difficult. Our study aimed to identify and integrate multiple belowground processes to elucidate the impact of shrub coverage on SR, using structural equation modeling (SEM). Results indicated that shrub coverage enhanced SR through root biomass, fungal community composition and soil temperature. SEM also revealed a potential indirect effect via interactions among those soil factors. Soil factors relating heterotrophic respiration affected on SR through more complex interaction among the factors. However, total effect sizes on SR were similar between factors relating autotrophic respiration and that relating heterotrophic respiration, suggesting that SR increases with shrub coverage would be unlikely to result from decreases in soil organic matter. Article in Journal/Newspaper Arctic Polar Science Polar Science Tundra National Institute of Polar Research Repository, Japan Arctic Polar Science 27 100562 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Shrub coverage Soil respiration Sub-Arctic tundra Structural equation modeling |
spellingShingle |
Shrub coverage Soil respiration Sub-Arctic tundra Structural equation modeling Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem |
topic_facet |
Shrub coverage Soil respiration Sub-Arctic tundra Structural equation modeling |
description |
Shrub encroachment and soil respiration (SR) are predicted to increase in the tundra ecosystem under climate warming, but little is known regarding potential causal relationships between shrubs and SR at a local scale. Multiple and complex belowground processes exist between the two phenomena, and consolidation is logistically difficult. Our study aimed to identify and integrate multiple belowground processes to elucidate the impact of shrub coverage on SR, using structural equation modeling (SEM). Results indicated that shrub coverage enhanced SR through root biomass, fungal community composition and soil temperature. SEM also revealed a potential indirect effect via interactions among those soil factors. Soil factors relating heterotrophic respiration affected on SR through more complex interaction among the factors. However, total effect sizes on SR were similar between factors relating autotrophic respiration and that relating heterotrophic respiration, suggesting that SR increases with shrub coverage would be unlikely to result from decreases in soil organic matter. |
format |
Article in Journal/Newspaper |
title |
Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem |
title_short |
Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem |
title_full |
Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem |
title_fullStr |
Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem |
title_full_unstemmed |
Integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem |
title_sort |
integrative assessment of the effects of shrub coverage on soil respiration in a tundra ecosystem |
publishDate |
2021 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16417 http://id.nii.ac.jp/1291/00016295/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Polar Science Polar Science Tundra |
genre_facet |
Arctic Polar Science Polar Science Tundra |
op_relation |
https://doi.org/10.1016/j.polar.2020.100562 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16417 http://id.nii.ac.jp/1291/00016295/ Polar Science, 100562(2021-03) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2020.100562 |
container_title |
Polar Science |
container_volume |
27 |
container_start_page |
100562 |
_version_ |
1766336121407537152 |