Leslie Holdridge

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Leslie Holdridge
Born Leslie Rensselaer Holdridge
September 29, 1907
Ledyard, Connecticut
Died June 19, 1999(1999-06-19) (aged 91)
Easton, Maryland
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

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.

Overview[edit]

Diagram of life zone classifications.

In his famous 1947 paper, he defined "life zones" using three indicators:

  1. Mean annual biotemperature (average temperature, after data values below 0 °C or above 30 °C have been eliminated)
  2. Total annual precipitation
  3. The ratio of mean annual potential evapotranspiration to mean total annual precipitation.

See also[edit]

References[edit]