Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape
Across the arctic tundra, the expansion of tall shrubs is expected to alter soil microbial activity in winter through shrub effects on snow redistribution. Tall shrubs act as a windbreak, trapping deep snowdrifts that insulate the ground from extreme cold and elevate soil respiration within shrub pa...
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Norwegian Polar Institute
2018
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Online Access: | https://doi.org/10.1080/17518369.2018.1468197 https://doaj.org/article/1cc7730be5864a09b6de14b1c8b6b20b |
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ftdoajarticles:oai:doaj.org/article:1cc7730be5864a09b6de14b1c8b6b20b 2023-05-15T14:57:41+02:00 Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape Daniel Ackerman 2018-01-01T00:00:00Z https://doi.org/10.1080/17518369.2018.1468197 https://doaj.org/article/1cc7730be5864a09b6de14b1c8b6b20b EN eng Norwegian Polar Institute http://dx.doi.org/10.1080/17518369.2018.1468197 https://doaj.org/toc/1751-8369 1751-8369 doi:10.1080/17518369.2018.1468197 https://doaj.org/article/1cc7730be5864a09b6de14b1c8b6b20b Polar Research, Vol 37, Iss 1 (2018) Arctic carbon cycle shrub expansion snow winter ecology soil respiration Environmental sciences GE1-350 Oceanography GC1-1581 article 2018 ftdoajarticles https://doi.org/10.1080/17518369.2018.1468197 2022-12-31T04:30:58Z Across the arctic tundra, the expansion of tall shrubs is expected to alter soil microbial activity in winter through shrub effects on snow redistribution. Tall shrubs act as a windbreak, trapping deep snowdrifts that insulate the ground from extreme cold and elevate soil respiration within shrub patches. However, this windbreak effect may reduce both snow cover and soil respiration in open tundra areas outside shrub patches. The net impact of increasing shrub cover on soil respiration across landscapes with heterogeneous vegetation cover and snow depths remains unknown. Here, I use a set of tundra landscape simulations to address this knowledge gap. The simulations vary shrub cover, mean snow depth and the strength of shrub windbreak effect. I show that for mean snowfall depths 40 cm or greater, increasing shrub cover usually reduced landscape-level soil respiration due to greater heterogeneity in snow depth. These simulations suggest that there is no overarching positive relationship between shrub density and wintertime soil respiration on a landscape scale. Hypotheses generated from these simulations may be tested empirically to improve the representation of tundra vegetation and snow dynamics in Earth System Models. Article in Journal/Newspaper Arctic Polar Research Tundra Directory of Open Access Journals: DOAJ Articles Arctic Polar Research 37 1 1468197 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic carbon cycle shrub expansion snow winter ecology soil respiration Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
Arctic carbon cycle shrub expansion snow winter ecology soil respiration Environmental sciences GE1-350 Oceanography GC1-1581 Daniel Ackerman Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape |
topic_facet |
Arctic carbon cycle shrub expansion snow winter ecology soil respiration Environmental sciences GE1-350 Oceanography GC1-1581 |
description |
Across the arctic tundra, the expansion of tall shrubs is expected to alter soil microbial activity in winter through shrub effects on snow redistribution. Tall shrubs act as a windbreak, trapping deep snowdrifts that insulate the ground from extreme cold and elevate soil respiration within shrub patches. However, this windbreak effect may reduce both snow cover and soil respiration in open tundra areas outside shrub patches. The net impact of increasing shrub cover on soil respiration across landscapes with heterogeneous vegetation cover and snow depths remains unknown. Here, I use a set of tundra landscape simulations to address this knowledge gap. The simulations vary shrub cover, mean snow depth and the strength of shrub windbreak effect. I show that for mean snowfall depths 40 cm or greater, increasing shrub cover usually reduced landscape-level soil respiration due to greater heterogeneity in snow depth. These simulations suggest that there is no overarching positive relationship between shrub density and wintertime soil respiration on a landscape scale. Hypotheses generated from these simulations may be tested empirically to improve the representation of tundra vegetation and snow dynamics in Earth System Models. |
format |
Article in Journal/Newspaper |
author |
Daniel Ackerman |
author_facet |
Daniel Ackerman |
author_sort |
Daniel Ackerman |
title |
Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape |
title_short |
Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape |
title_full |
Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape |
title_fullStr |
Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape |
title_full_unstemmed |
Shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape |
title_sort |
shrub-induced snowpack variability alters wintertime soil respiration across a simulated tundra landscape |
publisher |
Norwegian Polar Institute |
publishDate |
2018 |
url |
https://doi.org/10.1080/17518369.2018.1468197 https://doaj.org/article/1cc7730be5864a09b6de14b1c8b6b20b |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Polar Research Tundra |
genre_facet |
Arctic Polar Research Tundra |
op_source |
Polar Research, Vol 37, Iss 1 (2018) |
op_relation |
http://dx.doi.org/10.1080/17518369.2018.1468197 https://doaj.org/toc/1751-8369 1751-8369 doi:10.1080/17518369.2018.1468197 https://doaj.org/article/1cc7730be5864a09b6de14b1c8b6b20b |
op_doi |
https://doi.org/10.1080/17518369.2018.1468197 |
container_title |
Polar Research |
container_volume |
37 |
container_issue |
1 |
container_start_page |
1468197 |
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1766329816005476352 |