Summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ...
Tundra soils are one of the world’s largest organic carbon stores, yet this carbon is vulnerable to accelerated decomposition as climate warming progresses. The landscape-scale controls of litter decomposition are poorly understood in tundra ecosystems, which hinders our understanding of the global...
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Online Access: | https://dx.doi.org/10.5061/dryad.1g1jwsv29 https://datadryad.org/stash/dataset/doi:10.5061/dryad.1g1jwsv29 |
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ftdatacite:10.5061/dryad.1g1jwsv29 2024-02-04T09:52:15+01:00 Summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ... Gallois, Elise 2023 https://dx.doi.org/10.5061/dryad.1g1jwsv29 https://datadryad.org/stash/dataset/doi:10.5061/dryad.1g1jwsv29 en eng Dryad https://ecoevorxiv.org/repository/view/3765/ https://zenodo.org Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 FOS Natural sciences Decomposition Tundra tea bag index litter microclimate Temperature moisture Climate change ecosystem change carbon cycling Dataset dataset 2023 ftdatacite https://doi.org/10.5061/dryad.1g1jwsv29 2024-01-05T04:39:59Z Tundra soils are one of the world’s largest organic carbon stores, yet this carbon is vulnerable to accelerated decomposition as climate warming progresses. The landscape-scale controls of litter decomposition are poorly understood in tundra ecosystems, which hinders our understanding of the global carbon cycle. We examined the extent to which the thermal sum of surface air temperature, soil moisture and permafrost thaw depth influenced litter mass loss and decomposition rates (k), and at which spatial thresholds an environmental variable becomes a reliable predictor of decomposition, using the Tea Bag Index protocol across a heterogeneous tundra landscape on Qikiqtaruk - Herschel Island, Yukon, Canada. We found greater green tea litter mass loss and faster decomposition rates (k) in wetter areas within the landscape, and to a lesser extent in areas with deeper permafrost active layer thickness and higher surface thermal sums. We also found higher decomposition rates (k) on north-facing relative to ... : We used the ‘brms’ package (Bürkner, 2017) and weakly informative priors (half Student-t priors with 3 degrees of freedom) for all models, with two chains of 8000 iterations each and a warmup value of 2000. We conducted all analyses in R version 3.6.3. The code and data used for this study can be found at the following repository: https://github.com/ShrubHub/MicroTeaHub/ Large data: https://zenodo.org/record/6411321 ... Dataset Active layer thickness Herschel Herschel Island permafrost Tundra Yukon DataCite Metadata Store (German National Library of Science and Technology) Canada Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Yukon |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
FOS Natural sciences Decomposition Tundra tea bag index litter microclimate Temperature moisture Climate change ecosystem change carbon cycling |
spellingShingle |
FOS Natural sciences Decomposition Tundra tea bag index litter microclimate Temperature moisture Climate change ecosystem change carbon cycling Gallois, Elise Summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ... |
topic_facet |
FOS Natural sciences Decomposition Tundra tea bag index litter microclimate Temperature moisture Climate change ecosystem change carbon cycling |
description |
Tundra soils are one of the world’s largest organic carbon stores, yet this carbon is vulnerable to accelerated decomposition as climate warming progresses. The landscape-scale controls of litter decomposition are poorly understood in tundra ecosystems, which hinders our understanding of the global carbon cycle. We examined the extent to which the thermal sum of surface air temperature, soil moisture and permafrost thaw depth influenced litter mass loss and decomposition rates (k), and at which spatial thresholds an environmental variable becomes a reliable predictor of decomposition, using the Tea Bag Index protocol across a heterogeneous tundra landscape on Qikiqtaruk - Herschel Island, Yukon, Canada. We found greater green tea litter mass loss and faster decomposition rates (k) in wetter areas within the landscape, and to a lesser extent in areas with deeper permafrost active layer thickness and higher surface thermal sums. We also found higher decomposition rates (k) on north-facing relative to ... : We used the ‘brms’ package (Bürkner, 2017) and weakly informative priors (half Student-t priors with 3 degrees of freedom) for all models, with two chains of 8000 iterations each and a warmup value of 2000. We conducted all analyses in R version 3.6.3. The code and data used for this study can be found at the following repository: https://github.com/ShrubHub/MicroTeaHub/ Large data: https://zenodo.org/record/6411321 ... |
format |
Dataset |
author |
Gallois, Elise |
author_facet |
Gallois, Elise |
author_sort |
Gallois, Elise |
title |
Summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ... |
title_short |
Summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ... |
title_full |
Summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ... |
title_fullStr |
Summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ... |
title_full_unstemmed |
Summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ... |
title_sort |
summer litter decomposition is moderated by scale-dependent microenvironmental variation in tundra ecosystems ... |
publisher |
Dryad |
publishDate |
2023 |
url |
https://dx.doi.org/10.5061/dryad.1g1jwsv29 https://datadryad.org/stash/dataset/doi:10.5061/dryad.1g1jwsv29 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Canada Herschel Island Yukon |
geographic_facet |
Canada Herschel Island Yukon |
genre |
Active layer thickness Herschel Herschel Island permafrost Tundra Yukon |
genre_facet |
Active layer thickness Herschel Herschel Island permafrost Tundra Yukon |
op_relation |
https://ecoevorxiv.org/repository/view/3765/ https://zenodo.org |
op_rights |
Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode cc0-1.0 |
op_doi |
https://doi.org/10.5061/dryad.1g1jwsv29 |
_version_ |
1789963635881148416 |