Calvin DeWitt is Professor of Environmental Studies, the Nelson Institute, University of Wisconsin-Madison, and President Emeritus of Au Sable Institute. He is a physiological ecologist and ecosystems ecologist with a focus on wetland ecosystems. At Au Sable Institute he developed a program beginning in 1979 that now serves more than 60 Christian colleges and universities in North America, India, and Africa with courses in Christian environmental stewardship.
In the area of interface between ecology and Judeo-Christian environmental ethics he is co-author (with Sir Ghillean Prance) of Missionary Earthkeeping (1992) and author of Caring for Creation: Responsible Stewardship of God’s Handiwork (1997).