Journal
EUROPEAN JOURNAL OF SOIL SCIENCE
Volume 64, Issue 1, Pages 27-36Publisher
WILEY
DOI: 10.1111/ejss.12015
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Funding
- UK Natural Environment Research Council [NE/F003390/2]
- NERC [NE/F003390/2, NE/F003390/1] Funding Source: UKRI
- Natural Environment Research Council [NE/F003390/1, NE/F003390/2] Funding Source: researchfish
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Ebullition and episodic ebullition in particular, may be an important pathway for methane (CH4) losses from northern peatlands. We quantified the importance of episodic ebullition using controlled environment laboratory incubations of samples of near-surface bog peat, focusing on how ebullition can be measured effectively and assessing the variation in CH4 losses between microhabitats and seasons. The peat samples were collected from hollow and lawn microhabitats at two raised bogs: Longbridgemuir, southwest Scotland, and Cors Fochno, west Wales. We found that CH4 fluxes excluding episodic ebullition differed between peatland microhabitats but not between summer and early autumn conditions. Conversely, episodic ebullition did not differ between microhabitat types but virtually stopped after the onset of early autumn conditions. Most strikingly, episodic ebullition was less than 3.3% of total CH4 fluxes, and was therefore an insignificant mechanism of CH4 loss from our peat samples.
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