Daniel Hunt Janzen (born 1939 in Milwaukee, Wisconsin, U.S.) is an evolutionary ecologist, naturalist, and conservationist and the son of a previous Director of the US Fish and Wildlife Service. He divides his time between his professorship in biology at the University of Pennsylvania (Philadelphia, USA), where he has been since 1976, and his research and field work in Costa Rica, where he is an ad honorem (without remuneration) technical advisor...
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Daniel Hunt Janzen (born 1939 in Milwaukee, Wisconsin, U.S.) is an evolutionary ecologist, naturalist, and conservationist and the son of a previous Director of the US Fish and Wildlife Service. He divides his time between his professorship in biology at the University of Pennsylvania (Philadelphia, USA), where he has been since 1976, and his research and field work in Costa Rica, where he is an ad honorem (without remuneration) technical advisor for two long-term and long-range projects, which he conceived and initiated in the early 1970s: Area de Conservación Guanacaste, probably the oldest, largest and most successful habitat restoration project in the world, 1.430 km², located just south of the Costa Rica-Nicaragua border, between the Pacific Ocean and the Cordillera de Tilaran; and the Instituto Nacional de Biodiversidad (INBio), a research organisation that has taken the task of inventorying, cataloguing and describing the country's gigantic natural endowment.
Janzen obtained...
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