Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra
The degradation of ice-rich permafrost ecosystems due to climate change and infrastructure development strongly impacts carbon exchange dynamics in tundra landscapes. This study investigates the effects of surficial geology and infrastructure disturbances from road dust and flooding on vegetation an...
Published in: | Arctic, Antarctic, and Alpine Research |
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2024
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Online Access: | https://doi.org/10.1080/15230430.2024.2391244 https://doaj.org/article/2462dfec8b264d2ba6d224c6c8ae1073 |
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ftdoajarticles:oai:doaj.org/article:2462dfec8b264d2ba6d224c6c8ae1073 2024-09-30T14:27:16+00:00 Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra Anja Kade Donald A. Walker Martha K. Raynolds Amy L. Breen Olivia M. Hobgood 2024-12-01T00:00:00Z https://doi.org/10.1080/15230430.2024.2391244 https://doaj.org/article/2462dfec8b264d2ba6d224c6c8ae1073 EN eng Taylor & Francis Group https://www.tandfonline.com/doi/10.1080/15230430.2024.2391244 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2024.2391244 1938-4246 1523-0430 https://doaj.org/article/2462dfec8b264d2ba6d224c6c8ae1073 Arctic, Antarctic, and Alpine Research, Vol 56, Iss 1 (2024) Arctic vegetation carbon flux polygonal tundra permafrost closed-chamber measurements Environmental sciences GE1-350 Ecology QH540-549.5 article 2024 ftdoajarticles https://doi.org/10.1080/15230430.2024.2391244 2024-09-17T16:00:47Z The degradation of ice-rich permafrost ecosystems due to climate change and infrastructure development strongly impacts carbon exchange dynamics in tundra landscapes. This study investigates the effects of surficial geology and infrastructure disturbances from road dust and flooding on vegetation and trace gas fluxes in polygonal ice-wedge tundra in arctic Alaska. We compared CO2 and CH4 fluxes from closed-chamber measurements at common landform elements (polygon centers, troughs, and rims) at a natural site and a disturbed site within the Prudhoe Bay Oil Field. Relationships among environmental parameters, plant species composition, and trace gas fluxes were assessed through nonmetric multidimensional scaling. Map extrapolations showed spatial variations in midsummer landscape-level ecosystem productivity and CH4 efflux at the various geologic landforms. Highest carbon uptake occurred in ice-rich drained thaw lake basins with aquatic, graminoid-dominated polygon troughs. In contrast, wet, featureless areas associated with more recently drained, ice-poor thaw lake basins showed a net carbon loss even during summer. The damming effect of road infrastructure led to deeply flooded, minimally vegetated troughs with low ecosystem respiration and high CH4 fluxes close to the road. This work highlights the importance of the complex interactions among surficial geology, landform elements, vegetation type, and disturbance factors in understanding carbon exchange dynamics in ice-rich permafrost environments. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Arctic Climate change Ice permafrost Prudhoe Bay Tundra wedge* Alaska Directory of Open Access Journals: DOAJ Articles Arctic Arctic, Antarctic, and Alpine Research 56 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic vegetation carbon flux polygonal tundra permafrost closed-chamber measurements Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
Arctic vegetation carbon flux polygonal tundra permafrost closed-chamber measurements Environmental sciences GE1-350 Ecology QH540-549.5 Anja Kade Donald A. Walker Martha K. Raynolds Amy L. Breen Olivia M. Hobgood Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra |
topic_facet |
Arctic vegetation carbon flux polygonal tundra permafrost closed-chamber measurements Environmental sciences GE1-350 Ecology QH540-549.5 |
description |
The degradation of ice-rich permafrost ecosystems due to climate change and infrastructure development strongly impacts carbon exchange dynamics in tundra landscapes. This study investigates the effects of surficial geology and infrastructure disturbances from road dust and flooding on vegetation and trace gas fluxes in polygonal ice-wedge tundra in arctic Alaska. We compared CO2 and CH4 fluxes from closed-chamber measurements at common landform elements (polygon centers, troughs, and rims) at a natural site and a disturbed site within the Prudhoe Bay Oil Field. Relationships among environmental parameters, plant species composition, and trace gas fluxes were assessed through nonmetric multidimensional scaling. Map extrapolations showed spatial variations in midsummer landscape-level ecosystem productivity and CH4 efflux at the various geologic landforms. Highest carbon uptake occurred in ice-rich drained thaw lake basins with aquatic, graminoid-dominated polygon troughs. In contrast, wet, featureless areas associated with more recently drained, ice-poor thaw lake basins showed a net carbon loss even during summer. The damming effect of road infrastructure led to deeply flooded, minimally vegetated troughs with low ecosystem respiration and high CH4 fluxes close to the road. This work highlights the importance of the complex interactions among surficial geology, landform elements, vegetation type, and disturbance factors in understanding carbon exchange dynamics in ice-rich permafrost environments. |
format |
Article in Journal/Newspaper |
author |
Anja Kade Donald A. Walker Martha K. Raynolds Amy L. Breen Olivia M. Hobgood |
author_facet |
Anja Kade Donald A. Walker Martha K. Raynolds Amy L. Breen Olivia M. Hobgood |
author_sort |
Anja Kade |
title |
Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra |
title_short |
Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra |
title_full |
Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra |
title_fullStr |
Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra |
title_full_unstemmed |
Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra |
title_sort |
landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra |
publisher |
Taylor & Francis Group |
publishDate |
2024 |
url |
https://doi.org/10.1080/15230430.2024.2391244 https://doaj.org/article/2462dfec8b264d2ba6d224c6c8ae1073 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Antarctic and Alpine Research Arctic Arctic Climate change Ice permafrost Prudhoe Bay Tundra wedge* Alaska |
genre_facet |
Antarctic and Alpine Research Arctic Arctic Climate change Ice permafrost Prudhoe Bay Tundra wedge* Alaska |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 56, Iss 1 (2024) |
op_relation |
https://www.tandfonline.com/doi/10.1080/15230430.2024.2391244 https://doaj.org/toc/1523-0430 https://doaj.org/toc/1938-4246 doi:10.1080/15230430.2024.2391244 1938-4246 1523-0430 https://doaj.org/article/2462dfec8b264d2ba6d224c6c8ae1073 |
op_doi |
https://doi.org/10.1080/15230430.2024.2391244 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
56 |
container_issue |
1 |
_version_ |
1811633414662520832 |