Methane fluxes from a northern peatland : mechanisms controlling diurnal and seasonal variation and the magnitude of aerobic methanogenesis
Year: 2008
Type: dissertation
Abstract: Continuous eddy covariance measurements were conducted for a 125 day period, throughout the 2007 growing season, in a northern Alberta peatland.Significant diurnal and seasonal variation in methane fluxes were observed.Diurnal variation in methane flux was suggested to be due to variation in soil temperature and methane convective flow through vegetation to the atmosphere.Seasonal variation in methane flux was associated with a variety of factors, most notably seasonal variation in the capacity for methane emission at 10 ºC (R 10 ).The R 10 values varied as a function of soil temperature and were an important control of seasonal variation in methane flux.Also, a greenhouse gas budget was calculated comparing net methane emission and net CO 2 sequestration.This analysis indicated that the peatland was acting as a net sink of radiative forcing agents for the 2007 growing season.Research Council of Canada (NSERC) and the Canadian Foundation for Climate and Atmospheric Sciences (CFCAS).I am grateful for the assistance provided by my thesis committee: Dr. John Bain and Dr. Mathew Letts.For the course of my study committee meetings were an invaluable tool providing me with direction needed to be successful within a graduate program.I am appreciative of
Author: Kevin D. Long
Language: English
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
SDG: Climate action
Open Access status: green
OpenAlex ID: W786490112