The Cumulative Environmental Management Association (CEMA) is the leading multi-stakeholder group operating in the Regional Municipality of Wood Buffalo. Based in Fort McMurray, Alberta and operating for over 12 years, CEMA is a non-profit association which employees a professional secretariat to coordinate its world class research through its working groups on Land, Air, Water and Reclamation. Integral Ecology Group is working under contract to CEMA to explore potential effects of loading of atmospheric nitrogen to forest ecosystems in the Athabasca Oil Sands region.