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Supersaturation and evasion of CO₂ and CH₄ in surface waters at Mer Bleue peatland, Canada

Carbon dioxide (CO₂) and methane (CH₄) concentrations and evasion rates were measured in surface waters draining Mer Bleue peatland (Ontario, Canada) between spring and autumn 2005. All sites exhibit a consistent pattern of supersaturation throughout the year, which is broadly related to hydrologica...

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Published in:Hydrological processes 2008-06, Vol.22 (12), p.2044-2054
Main Authors: Billett, M.F, Moore, T.R
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Language:English
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Moore, T.R
description Carbon dioxide (CO₂) and methane (CH₄) concentrations and evasion rates were measured in surface waters draining Mer Bleue peatland (Ontario, Canada) between spring and autumn 2005. All sites exhibit a consistent pattern of supersaturation throughout the year, which is broadly related to hydrological and temperature changes between spring snowmelt and autumn freezing. Both measurements and estimates of CO₂ and CH₄ evasion from open water to the atmosphere suggest that parts of the catchment (including beaver dams) are significant degassing hot spots. We present data showing how vertical gaseous carbon fluxes compare with lateral carbon fluxes and make an initial estimate of the importance to the overall carbon budget of CO₂ and CH₄ evasion to the atmosphere from water surfaces at Mer Bleue. Copyright © 2007 John Wiley & Sons, Ltd.
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1099-1085
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subjects carbon dioxide
DOC
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
evasion
Exact sciences and technology
Geochemistry
Hydrology
Hydrology. Hydrogeology
methane
Mineralogy
peatland
Pollution, environment geology
Silicates
supersaturation
Water geochemistry
title Supersaturation and evasion of CO₂ and CH₄ in surface waters at Mer Bleue peatland, Canada
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