Arctic soil methane sink increases with drier conditions and higher ecosystem respiration
Carolina Voigt, Anna-Maria Virkkala, Gabriel Gosselin, Kathryn A. Bennett, T. Andrew Black, Matteo Detto, Charles Chevrier-Dion, Georg Guggenberger, Wasi Hashmi, Leonie Kohl, Dan Kou, Charlotte Marquis, Philip Marsh, Maija E. Marushchak, Zoran Nesic, Hannu Nykänen, Taija Saarela, Leopold Sauheitl, Branden Walker, Niels Weiss, Evan J. Wilcox, Oliver Sonnentag
Abstract
Abstract Arctic wetlands are known methane (CH 4 ) emitters but recent studies suggest that the Arctic CH 4 sink strength may be underestimated. Here we explore the capacity of well-drained Arctic soils to consume atmospheric CH 4 using >40,000 hourly flux observations and spatially distributed flux measurements from 4 sites and 14 surface types. While consumption of atmospheric CH 4 occurred at all sites at rates of 0.092 ± 0.011 mgCH 4 m −2 h −1 (mean ± s.e.), CH 4 uptake displayed distinct diel and seasonal patterns reflecting ecosystem respiration. Combining in situ flux data with laboratory investigations and a machine learning approach, we find biotic drivers to be highly important. Soil moisture outweighed temperature as an abiotic control and higher CH 4 uptake was linked to increased availability of labile carbon. Our findings imply that soil drying and enhanced nutrient supply will promote CH 4 uptake by Arctic soils, providing a negative feedback to global climate change.- Cite:
- Carolina Voigt, Anna-Maria Virkkala, Gabriel Gosselin, Kathryn A. Bennett, T. Andrew Black, Matteo Detto, Charles Chevrier-Dion, Georg Guggenberger, Wasi Hashmi, Leonie Kohl, Dan Kou, Charlotte Marquis, Philip Marsh, Maija E. Marushchak, Zoran Nesic, Hannu Nykänen, Taija Saarela, Leopold Sauheitl, Branden Walker, et al.. 2023. Arctic soil methane sink increases with drier conditions and higher ecosystem respiration. Nature Climate Change.
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@article{Voigt-2023-Arctic,
title = "Arctic soil methane sink increases with drier conditions and higher ecosystem respiration",
author = {Voigt, Carolina and
Virkkala, Anna-Maria and
Gosselin, Gabriel and
Bennett, Kathryn A. and
Black, T. Andrew and
Detto, Matteo and
Chevrier-Dion, Charles and
Guggenberger, Georg and
Hashmi, Wasi and
Kohl, Leonie and
Kou, Dan and
Marquis, Charlotte and
Marsh, Philip and
Marushchak, Maija E. and
Nesic, Zoran and
Nyk{\"a}nen, Hannu and
Saarela, Taija and
Sauheitl, Leopold and
Walker, Branden and
Weiss, Niels and
Wilcox, Evan J. and
Sonnentag, Oliver},
journal = "Nature Climate Change",
year = "2023",
publisher = "Springer Science and Business Media LLC",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G23-80001",
doi = "10.1038/s41558-023-01785-3",
abstract = "Abstract Arctic wetlands are known methane (CH 4 ) emitters but recent studies suggest that the Arctic CH 4 sink strength may be underestimated. Here we explore the capacity of well-drained Arctic soils to consume atmospheric CH 4 using {\textgreater}40,000 hourly flux observations and spatially distributed flux measurements from 4 sites and 14 surface types. While consumption of atmospheric CH 4 occurred at all sites at rates of 0.092 {\mbox{$\pm$}} 0.011 mgCH 4 m −2 h −1 (mean {\mbox{$\pm$}} s.e.), CH 4 uptake displayed distinct diel and seasonal patterns reflecting ecosystem respiration. Combining in situ flux data with laboratory investigations and a machine learning approach, we find biotic drivers to be highly important. Soil moisture outweighed temperature as an abiotic control and higher CH 4 uptake was linked to increased availability of labile carbon. Our findings imply that soil drying and enhanced nutrient supply will promote CH 4 uptake by Arctic soils, providing a negative feedback to global climate change.",
}
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<abstract>Abstract Arctic wetlands are known methane (CH 4 ) emitters but recent studies suggest that the Arctic CH 4 sink strength may be underestimated. Here we explore the capacity of well-drained Arctic soils to consume atmospheric CH 4 using \textgreater40,000 hourly flux observations and spatially distributed flux measurements from 4 sites and 14 surface types. While consumption of atmospheric CH 4 occurred at all sites at rates of 0.092 \pm 0.011 mgCH 4 m −2 h −1 (mean \pm s.e.), CH 4 uptake displayed distinct diel and seasonal patterns reflecting ecosystem respiration. Combining in situ flux data with laboratory investigations and a machine learning approach, we find biotic drivers to be highly important. Soil moisture outweighed temperature as an abiotic control and higher CH 4 uptake was linked to increased availability of labile carbon. Our findings imply that soil drying and enhanced nutrient supply will promote CH 4 uptake by Arctic soils, providing a negative feedback to global climate change.</abstract>
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%0 Journal Article %T Arctic soil methane sink increases with drier conditions and higher ecosystem respiration %A Voigt, Carolina %A Virkkala, Anna-Maria %A Gosselin, Gabriel %A Bennett, Kathryn A. %A Black, T. Andrew %A Detto, Matteo %A Chevrier-Dion, Charles %A Guggenberger, Georg %A Hashmi, Wasi %A Kohl, Leonie %A Kou, Dan %A Marquis, Charlotte %A Marsh, Philip %A Marushchak, Maija E. %A Nesic, Zoran %A Nykänen, Hannu %A Saarela, Taija %A Sauheitl, Leopold %A Walker, Branden %A Weiss, Niels %A Wilcox, Evan J. %A Sonnentag, Oliver %J Nature Climate Change %D 2023 %I Springer Science and Business Media LLC %F Voigt-2023-Arctic %X Abstract Arctic wetlands are known methane (CH 4 ) emitters but recent studies suggest that the Arctic CH 4 sink strength may be underestimated. Here we explore the capacity of well-drained Arctic soils to consume atmospheric CH 4 using \textgreater40,000 hourly flux observations and spatially distributed flux measurements from 4 sites and 14 surface types. While consumption of atmospheric CH 4 occurred at all sites at rates of 0.092 \pm 0.011 mgCH 4 m −2 h −1 (mean \pm s.e.), CH 4 uptake displayed distinct diel and seasonal patterns reflecting ecosystem respiration. Combining in situ flux data with laboratory investigations and a machine learning approach, we find biotic drivers to be highly important. Soil moisture outweighed temperature as an abiotic control and higher CH 4 uptake was linked to increased availability of labile carbon. Our findings imply that soil drying and enhanced nutrient supply will promote CH 4 uptake by Arctic soils, providing a negative feedback to global climate change. %R 10.1038/s41558-023-01785-3 %U https://gwf-uwaterloo.github.io/gwf-publications/G23-80001 %U https://doi.org/10.1038/s41558-023-01785-3
Markdown (Informal)
[Arctic soil methane sink increases with drier conditions and higher ecosystem respiration](https://gwf-uwaterloo.github.io/gwf-publications/G23-80001) (Voigt et al., GWF 2023)
- Arctic soil methane sink increases with drier conditions and higher ecosystem respiration (Voigt et al., GWF 2023)
ACL
- Carolina Voigt, Anna-Maria Virkkala, Gabriel Gosselin, Kathryn A. Bennett, T. Andrew Black, Matteo Detto, Charles Chevrier-Dion, Georg Guggenberger, Wasi Hashmi, Leonie Kohl, Dan Kou, Charlotte Marquis, Philip Marsh, Maija E. Marushchak, Zoran Nesic, Hannu Nykänen, Taija Saarela, Leopold Sauheitl, Branden Walker, et al.. 2023. Arctic soil methane sink increases with drier conditions and higher ecosystem respiration. Nature Climate Change.