Peter Morrison Vitousek (born January 24, 1949 ) is an American ecologist, particularly known for his work on the nitrogen cycle. Born in Hawaii, Vitousek graduated from Amherst College in 1971 and received his Ph.D. in biology from Dartmouth College in 1975. Since then, he has worked as an Assistant Professor of Zoology and Biology at Indiana University (1975–79), an Associate Professor of Botany and Biology at the University of North Carolina at Chapel Hill (1980–83), and a Professor in the Department of Biology at Stanford University since 1984. He is married to fellow Stanford professor and ecologist Pamela Matson. He was elected a member of the National Academy of Sciences in 1992. In 1993, he was elected a Fellow of the American Academy of Arts and Sciences. Vitousek was awarded the 2006 NAS Award for Scientific Reviewing "for his scholarly and inspirational book and reviews on nitrogen cycling and its role in the evolving patterns of ecosystem productivity and diversity." In 2010, he was awarded the Japan Prize.Vitousek is the son of Betty and Roy Vitousek Jr of Hawaii. He is the grandson of Roy A. Vitousek who was a three-term Speaker of the Hawaii House of Representatives. Source: Wikipedia (en)