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

Billett, M. F.; Moore, T. R.. 2008 Supersaturation and evasion of CO2 and CH4 in surface waters at Mer Bleue peatland, Canada. Hydrological Processes, 22 (12). 2044-2054. 10.1002/hyp.6805

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Abstract/Summary

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.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1002/hyp.6805
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry > BG01 Measuring and modelling trace gas, aerosol and carbon > BG01.2 Carbon
CEH Sections: Billett
ISSN: 0885-6087
Additional Keywords: peatland, evasion, carbon dioxide, methane, supersaturation, dissolved organic carbon, DOC
NORA Subject Terms: Ecology and Environment
Hydrology
Date made live: 11 Aug 2008 10:12
URI: http://nora.nerc.ac.uk/id/eprint/3617

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