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Daniel H. Janzen

ダニエル・H・ジャンゼン

Daniel H. Janzen

Profile

Gender
Male
Born
1939-01-18 （Milwaukee, Wisconsin, U.S.）
Nationality
United States
Languages
English
Residence History
Philadelphia, Pennsylvania (University of Pennsylvania) → Costa Rica (Guanacaste region)

Career

Occupations
evolutionary ecologist, conservationist, university professor
Active Years
1963-
Affiliations
University of Pennsylvania, Guanacaste Dry Forest Conservation Fund (GDFCF), Área de Conservación Guanacaste (ACG)
Memberships
Member, United States National Academy of Sciences, Honorary Fellow, Association for Tropical Biology and Conservation (ATBC)
Influenced
Winifred Hallwachs (collaborator), Paul D. N. Hebert (DNA barcoding collaborator)

Education

University of Minnesota
Department of Biology
Degree: B.Sc.
Period: 在学〜1961年
Year of Graduation: 1961
Country: United States
University of California, Berkeley
Department of Biology (Ph.D. program)
Degree: Ph.D.
Period: 〜1965年
Year of Graduation: 1965
Country: United States

Awards

Crafoord Prize (ecology)
1984
Organization: Royal Swedish Academy of Sciences
Result: 受賞
MacArthur Fellowship
1989
Organization: MacArthur Foundation
Result: 受賞
Kyoto Prize (Basic Sciences)
1997
Category: 基礎科学分野
Organization: Inamori Foundation
Result: 受賞
BBVA Foundation Frontiers of Knowledge Award (Ecology and Conservation Biology)
2011
Category: 生態学・保全生物学
Organization: BBVA Foundation
Result: 受賞
Blue Planet Prize
2014
Organization: Asahi Glass Foundation
Result: 受賞
Albert Einstein World Award of Science
2002
Organization: World Cultural Council
Result: 受賞
Global 500 Roll of Honour (UNEP)
1987
Organization: United Nations Environment Programme (UNEP)
Result: 受賞
National Outdoor Book Awards (Design & Artistic Merit)
2006
Work: 100 Caterpillars: Portraits from the Tropical Forests of Costa Rica
Category: Design & Artistic Merit
Organization: National Outdoor Book Awards
Result: 受賞

Awards & Nominations

Works

Major Works

Why Mountain Passes Are Higher in the Tropics

1967 academic paper (ecology)

A theoretical examination of species distributions and thermal tolerance in the tropics, arguing that tropical species have narrower temperature tolerances, making mountain passes more significant barriers to dispersal.

species distributionsthermal tolerancebiogeography

Why Fruits Rot, Seeds Mold, and Meat Spoils

1977 academic paper (ecology/chemical ecology)

Proposes that microbes may render food unpalatable to vertebrates as an evolutionary strategy to reduce consumption by larger consumers, discussing implications for microbe–animal interactions.

microbial interactionsdefensive chemistrypredation avoidance

Guanacaste National Park: tropical ecological and cultural restoration

1986 academic book / conservation report

Practical record of ecological restoration and cultural renewal in Guanacaste, Costa Rica, discussing land purchases, community collaboration, species inventories, and research organization.

conservationecosystem restorationcommunity engagement

Costa Rican Natural History (editor)

1983 edited volume 823 pages

A comprehensive edited volume on Costa Rica's natural history covering fauna, flora, geography, and conservation.

natural historybiodiversityregional studies

Bibliography

  • Janzen, D. H., ed. (1983) Costa Rican Natural History
  • Janzen, D. H. (1967) 'Why Mountain Passes Are Higher in the Tropics'
  • Janzen, D. H. (1977) 'Why Fruits Rot, Seeds Mold, and Meat Spoils'
  • Janzen, D. H. (1986) 'Guanacaste National Park: tropical ecological and cultural restoration'
  • Rosenthal, G. A.; Janzen, D. H., eds. (1979) Herbivores: Their Interaction with Secondary Plant Metabolites

Adaptations

  • Featured in the documentary 'Costa Rica: Paradise Reclaimed'

Style & Themes

Literary Style
scientific, descriptive, observational writinganalytical style presenting theoretical hypotheses
Recurring Motifs
coevolution (mutualism)importance of biodiversityintegration of conservation and local communities

Legacy

Janzen has had a profound impact on tropical ecology and conservation biology, leaving a lasting legacy through ecosystem restoration in Guanacaste and large-scale species inventories (including DNA barcoding) that continue to influence biodiversity research and conservation practice.

Academic Societies

  • United States National Academy of Sciences (member)
  • Association for Tropical Biology and Conservation (Honorary Fellow)

Archives

  • University of Pennsylvania biology department archives

In Popular Culture

  • Featured in the documentary 'Costa Rica: Paradise Reclaimed'

Quotes

  • "We did these things together"
    Source: Statement about Winifred Hallwachs (quoted in Allen, Green Phoenix, 2001) (2001)

Trivia

  • Long-term research collaborator with his wife Winifred Hallwachs.
  • Involved in DNA barcoding initiatives registering over 500,000 specimens representing more than 45,000 species.
  • Led large-scale habitat restoration and conservation efforts in the Guanacaste region (ACG).