University of Washington, 1971; University of Montana's Flathead Lake Biological Station, 1980, 1982, 1984, 1986
Phycology (algae) and macrophytes, plant evolution and diversity, introductory biology (evolution, ecology, and diversity)
Emphasis on the physiological ecology (temperature, pH, light, and nutrients) and how these factors affect growth and mating strategies in the snow alga Chloromonas in eastern and western North America
Editor and contributor to Snow Ecology reference, Cambridge University Press; numerous articles in Phycologia, Journal of Phycology, Arctic and Alpine Research, Canadian Journal of Botany, Hydrological Processes, International Microbiology, Rhodora, Proceedings of the Eastern and Western Snow Conferences; NASA and NATO conference reports; book chapters; photomicrographs in textbooks and references