In 1970, the Sierra Club engaged four San Jose State University ecology professors, including Dr. H. Thomas Harvey, to assess the impact of Sierra Club wilderness excursions on the habitats of California’s High Sierra and parts of Yosemite National Park.It expertisees in wildlife ecology, restoration ecology, plant ecology, fish and aquatic ecology, and landscape architecture in pursuit of its mission to create ecologically sound solutions to its client’s complex natural resource challenges.