The Department of Environmental Conservation's focus extends from the ecology and management of fish and wildlife populations, trees, forests, watersheds and landscapes to the physical, social, and policy aspects of conservation involving urban forests, human habitat, and sustainable building and construction. The study of biology, sociology, policy, engineering, building science, and resource management encompasses rural, suburban, and urban environments. The unifying focus of all these activities is on the stewardship of healthy and sustainable ecosystems that provide important human and community benefits. ECO is one of 16 departments in the College of Natural Sciences, and the School of Earth and Sustainability at UMass Amherst.