Addresses legal requirements and institutions dealing with animal and plant species, biological resources, habitats, and ecosystems. Major themes include biological diversity; endangered and threatened species; public and private rights in migratory resources; public trust doctrine; the allocation of power among federal, state, and local governments; and the roles of administrative agencies in ecosystem management. Offers students an opportunity to explore specific topics of interest such as environmental ethics; wetlands protection; fisheries law; Native American hunting rights and fishing rights; and management of national parks, forests, and grazing lands.