Biological Sciences (Evolution, Behavior, Ecology, Environment)

Daniel Hunt Janzen

U.S.A. / January 18, 1939
Tropical Biologist; Professor, University of Pennsylvania

As a pioneer of tropical biology, Dr. Janzen has formulated a large number of unique hypotheses, including mutualism for defense against predators and predation as a basis for biodiversity, making significant contributions to the flourishing of tropical ecology. Applying his special knowledge to practical situations, he has also been active in biological and environmental conservation in the tropics.

BRIEF BIOGRAPHY

1939	Born in Milwaukee, U.S.A.
1961	B.S. University of Minnesota, U.S.A.
1965	Ph.D., Entomology, University of California, Berkeley
1969	Associate Professor, University of Chicago
1972	Professor, University of Michigan
1972-present	Research Counselor, National Park Service of Costa Rica
1978-present	Professor, University of Pennsylvania
1991	Founded the Instituto Nacional de Biodiversidad, Costa Rica

AWARDS AND HONORS

1975	Gleason Award, American Botanical Society
1984	Crafoord Prize, Swedish Royal Academy
1989	Joseph Leidy Medal, Philadelphia Academy Natural Sciences
1994	Silver Medal Award, International Society of Chemical Ecology
1994	Fellow, American Academy of Arts and Sciences Member, National Academy of Sciences U.S.A. Decreed Honorary Member of the National Park Service of Costa Rica Honorary Professor, Univeridad Nacional de Costa Rica

MAJOR WORKS

1966	Coevolution of mutualism between ants and acacias in Central America. Evolution
1970	Herbivores and the number of tree species in tropical forests. American Naturalist
1971	Euglossine bees as long-distance pollinators of tropical plants. Science
1973	Sweep samples of tropical foliage insects: Effects of seasons, vegetation types, elevation, time of day and insularity. Ecology
1974	Tropical blackwater rivers, animals and mast fruiting by the Dipterocarpaceae. Biotropica
1983	(ed.) Costa Rican Natural History. Univ. of Chicago Press.
1991	How to save tropical biodiversity? American Entomologist

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