Douglas Green first came to Arizona State University in 1990. Courses taught by Green include Soils, Soil Ecology, Watershed Management, Riparian Ecology, Riparian Restoration, and select portions of General Biology. He is especially interested in helping students understand the importance of soils as a factor in habitat quality.
Green has been involved with the U.S. Forest Service concerning riparian restoration and riparian monitoring and assessment. He has been involved with a local utility, Salt River Project, assessing flooding impacts to willow trees, an important component of willow flycatcher habitat. Current research projects include assessment of the impact of urbanization on riparian areas associated with small ephemeral stream channels in the Tucson area, influence of juniper trees plant and soil communities, and growth and survival of saguaro plant as part of restoration efforts after wildfire.
Green is involved with the Testing and Education Committee of Arizona Envirothon, sponsored by Cannon. The Cannon Envirothon is the largest high school-level environmental contest in the United States including approximately 45 states and most Canadian provinces. Green also served as a judge at the Arizona Science and Engineering Fair.
His current research interests include impact of urbanization on riparian areas and the efficacy of restoration efforts in small stream channels and riparian areas.