Large increases in methane emissions expected from North America's largest wetland complex.

Natural methane (CH) emissions from aquatic ecosystems may rise because of human-induced climate warming, although the magnitude of increase is highly uncertain. Using an exceptionally large CH flux dataset (~19,000 chamber measurements) and remotely sensed information, we modeled plot- and landscape-scale wetland CH emissions from the Prairie Pothole Region (PPR), North America's largest wetland complex. Plot-scale CH emissions were driven by hydrology, temperature, vegetation, and wetland size.