Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska
ABSTRACTThe increase in deciduous shrub growth in response to climate change throughout the Arctic tundra has uncertain implications, in part due to a lack of field observations. Here we investigate how increasing alder shrub growth in alpine tundra in Interior Alaska corresponds to active layer thi...
Published in: | Arctic, Antarctic, and Alpine Research |
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2023
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Online Access: | https://doi.org/10.1080/15230430.2023.2285334 https://doaj.org/article/f5a820c783f54cb5b24572dcedac648f |
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ftdoajarticles:oai:doaj.org/article:f5a820c783f54cb5b24572dcedac648f 2024-09-15T17:34:49+00:00 Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska Allison M. Welch Shawn A. Pedron Robert Gus Jespersen Xiaomei Xu Brittney Martinez Yezzen Khazindar Nicole M. Fiore Michael L. Goulden Claudia I. Czimczik 2023-12-01T00:00:00Z https://doi.org/10.1080/15230430.2023.2285334 https://doaj.org/article/f5a820c783f54cb5b24572dcedac648f EN eng Taylor & Francis Group https://www.tandfonline.com/doi/10.1080/15230430.2023.2285334 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2023.2285334 1938-4246 1523-0430 https://doaj.org/article/f5a820c783f54cb5b24572dcedac648f Arctic, Antarctic, and Alpine Research, Vol 55, Iss 1 (2023) Soil organic carbon NDVI active layer thickness shrubification permafrost Environmental sciences GE1-350 Ecology QH540-549.5 article 2023 ftdoajarticles https://doi.org/10.1080/15230430.2023.2285334 2024-08-05T17:49:40Z ABSTRACTThe increase in deciduous shrub growth in response to climate change throughout the Arctic tundra has uncertain implications, in part due to a lack of field observations. Here we investigate how increasing alder shrub growth in alpine tundra in Interior Alaska corresponds to active layer thickness and soil physical properties. We documented increased alder growth by combining biomass harvests and dendrochronology with the analysis of remotely sensed Normalized Difference Vegetation Index and fire history. Active layer thickness was measured with a tile probe and carbon and nitrogen pools were assessed via elemental analysis. Shallower organic layers under increasing alder growth indicate that nitrogen-rich, deciduous litter inputs may play a role in accelerating decomposition. Despite the observed reduction in organic carbon stocks, active layer thickness was the same under alder and adjacent graminoid tundra, implying deeper thaw of the underlying mineral soil. This study provides further evidence that the widely observed expansion of deciduous shrubs into graminoid tundra will reduce ecosystem carbon stocks and intensify soil–atmosphere thermal coupling. Article in Journal/Newspaper Active layer thickness Antarctic and Alpine Research Arctic Climate change permafrost Tundra Alaska Directory of Open Access Journals: DOAJ Articles Arctic, Antarctic, and Alpine Research 55 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Soil organic carbon NDVI active layer thickness shrubification permafrost Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
Soil organic carbon NDVI active layer thickness shrubification permafrost Environmental sciences GE1-350 Ecology QH540-549.5 Allison M. Welch Shawn A. Pedron Robert Gus Jespersen Xiaomei Xu Brittney Martinez Yezzen Khazindar Nicole M. Fiore Michael L. Goulden Claudia I. Czimczik Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska |
topic_facet |
Soil organic carbon NDVI active layer thickness shrubification permafrost Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
ABSTRACTThe increase in deciduous shrub growth in response to climate change throughout the Arctic tundra has uncertain implications, in part due to a lack of field observations. Here we investigate how increasing alder shrub growth in alpine tundra in Interior Alaska corresponds to active layer thickness and soil physical properties. We documented increased alder growth by combining biomass harvests and dendrochronology with the analysis of remotely sensed Normalized Difference Vegetation Index and fire history. Active layer thickness was measured with a tile probe and carbon and nitrogen pools were assessed via elemental analysis. Shallower organic layers under increasing alder growth indicate that nitrogen-rich, deciduous litter inputs may play a role in accelerating decomposition. Despite the observed reduction in organic carbon stocks, active layer thickness was the same under alder and adjacent graminoid tundra, implying deeper thaw of the underlying mineral soil. This study provides further evidence that the widely observed expansion of deciduous shrubs into graminoid tundra will reduce ecosystem carbon stocks and intensify soil–atmosphere thermal coupling. |
format |
Article in Journal/Newspaper |
author |
Allison M. Welch Shawn A. Pedron Robert Gus Jespersen Xiaomei Xu Brittney Martinez Yezzen Khazindar Nicole M. Fiore Michael L. Goulden Claudia I. Czimczik |
author_facet |
Allison M. Welch Shawn A. Pedron Robert Gus Jespersen Xiaomei Xu Brittney Martinez Yezzen Khazindar Nicole M. Fiore Michael L. Goulden Claudia I. Czimczik |
author_sort |
Allison M. Welch |
title |
Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska |
title_short |
Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska |
title_full |
Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska |
title_fullStr |
Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska |
title_full_unstemmed |
Implications of alder shrub growth for alpine tundra soil properties in Interior Alaska |
title_sort |
implications of alder shrub growth for alpine tundra soil properties in interior alaska |
publisher |
Taylor & Francis Group |
publishDate |
2023 |
url |
https://doi.org/10.1080/15230430.2023.2285334 https://doaj.org/article/f5a820c783f54cb5b24572dcedac648f |
genre |
Active layer thickness Antarctic and Alpine Research Arctic Climate change permafrost Tundra Alaska |
genre_facet |
Active layer thickness Antarctic and Alpine Research Arctic Climate change permafrost Tundra Alaska |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 55, Iss 1 (2023) |
op_relation |
https://www.tandfonline.com/doi/10.1080/15230430.2023.2285334 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2023.2285334 1938-4246 1523-0430 https://doaj.org/article/f5a820c783f54cb5b24572dcedac648f |
op_doi |
https://doi.org/10.1080/15230430.2023.2285334 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
55 |
container_issue |
1 |
_version_ |
1810429623681417216 |