Leslie Holdridge
Leslie Ransselaer Holdridge (September 29, 1907 – June 19, 1999) was an American botanist and climatologist. He was the son of Samuel Eneas Holdridge and Phebe J. Holmes. He was the father of composer Lee Holdridge as well as the father of Leslie A. Holdridge, Lorena Holdridge, Marbella Holdridge, Marly Holdridge, Marisela Holdridge, Thania Holdridge, John Holdridge, Ida Holdridge, Reuseland Holdridge, Leythy J. Holdridge and youngest son Gregory Holdridge whom he fathered with Costa Rican last life partner Clara Luz Melendez.[1]
Leslie Holdridge | |
---|---|
Born | Leslie Rensselaer Holdridge September 29, 1907 |
Died | June 19, 1999 91) | (aged
Nationality | USA |
Citizenship | USA |
Alma mater | H. B.S. in Forestry, University of Maine, 1931, postgrad., 1931-32 M.S. in Ecology, University of Michigan, 1946, Ph.D., 1947. |
Scientific career | |
Institutions | Instituto Tecnologico de Costa Rica |
Career
In his famous 1947 paper[1], he defined "life zones" using three indicators:
- Mean annual biotemperature (average temperature, after data values below 0 °C or above 30 °C have been eliminated)
- Total annual precipitation
- The ratio of mean annual potential evapotranspiration to mean total annual precipitation.[1]
Holdridge participated in the Cinchona Missions, a United States effort to search for natural sources of quinine during World War II.[2]
gollark: For what purpose?
gollark: https://xkcd.com/1962/
gollark: Also: this is the canonical generation list.
gollark: University is still moderately subsidised now.
gollark: It was still cheaper then. The costs of education and stuff have gone up a lot relative to inflation for ?????? reasons.
See also
References
- Holdridge, L.R. (1947). "Determination of world plant formations from simple climatic data". Science. 105 (2727): 367–8. Bibcode:1947Sci...105..367H. doi:10.1126/science.105.2727.367. PMID 17800882.
- Steere, W. (1945). The Cinchona-Bark Industry of South America. The Scientific Monthly, 61(2), 114-126. Retrieved from http://www.jstor.org/stable/18623
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