The Great Plains Methane Project (GPM) Overview
The overall goal of the GPM is to improve the mechanistic understanding of CH4 uptake in oxic soils and to begin development of next-generation models that can better predict changes in the strength of this sink. The objectives of this study are to:
1) Collect data on CH4 uptake and its ecophysiological controls from a diverse collection of sites.
2) Determine the controls of CH4 uptake, especially evaluating the importance of methanotroph community composition.
3) Improve DAYCENT predictions of CH4 uptake in the face of climate change
Ammonium Inhibition Protocol
Field Methods for Chamber Fluxes
Using field chambers to collect gas samples. [youtube]http://www.youtube.com/watch?v=4yp3ENmrQOE&feature=plcp&context=C3b421f4UDOEgsToPDskIwtQNJ8n0LMZ53NBH5MSUz[/youtube]
Diluting the SF6 [youtube]http://www.youtube.com/watch?v=GSBWYZD9bdc&feature=context&context=C3b421f4UDOEgsToPDskIwtQNJ8n0LMZ53NBH5MSUz[/youtube]
Injecting SF6 into a sampling chamber [youtube]http://www.youtube.com/watch?v=SdAhcWwzrxY&feature=context&context=C3b421f4UDOEgsToPDskIwtQNJ8n0LMZ53NBH5MSUz[/youtube]
Michaelis-Menten Kinetics of Methane Consumption
“Occult” Methane Production (Stable Isotope Pool Dilution)
Soil Microbial Community Analyses
Last Updated (2-22-13)