Methane Oxidation, Production, and Emission at Contrasting Sites in a Boreal Bog

• Published in: Geomicrobiology journal Vol. 17; no. 3; pp. 237 - 251
• Main Authors: Whalen, S C, Reeburgh, W S
• Format: Journal Article
• Language: English
• Published: Informa UK Ltd 01.07.2000
• Subjects: Boreal Bog Methane Oxidation Methanogenesis Peatlands
• ISSN: 0149-0451; 1521-0529
• DOI: 10.1080/01490450050121198

Boreal peatlands, a major source of atmospheric CH 4 , are characterized by a rapidly fluctuating water table position and meter-scale variations in relief. Regional and ecosystem-based studies show that water table position generally controls CH 4 emission from boreal peatlands by influencing the relative extent of the zones of CH 4 oxidation and production within the peat profile. We used a combined field and laboratory study to assess the influence of local hydrology on the short-term dynamics of CH 4 production, oxidation, and emission from sites in an Alaskan boreal peatland that were characterized by temporarily (site LB1A) and permanently (LB2) water-saturated subsurface peat during the thaw season. The two sites contrasted sharply with respect to the dynamics of CH 4 cycling. Site LB1A, which showed low CH 4