Leslie Holdridge

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Leslie Rensselaer Holdridge
Born	September 29, 1907 Ledyard, Connecticut
Died	June 19, 1999 Easton, Maryland
Citizenship	USA
Nationality	USA
Institutions	Institute Tecnologico de Costa Rica
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.
Religious stance	Congregationalist

Professor Leslie Ransselaer Holdridge (1907 to 1999) was an American botanist and climatologist. He was the son of Samuel Eneas Holdridge and Phebe J. Holmes.

[edit] Overview

Main article: Leslie Renseler Holdridge Holmes life zones

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.

A Botanist called Holdridge studied the Tropical Forest of Puerto Rico and wrote a book about the tree varieties that he found called: 'COMMON TREES OF P.R.' Could it be the same Botanist?

[edit] See also

• Climate classification

[edit] References

• Holdridge, L.R. (1947) Determination of world plant formations from simple climatic data. Science, 105, 367--368.

Persondata
NAME	Holdridge, Leslie
ALTERNATIVE NAMES
SHORT DESCRIPTION	American botanist and climatologist
DATE OF BIRTH	September 29, 1907
PLACE OF BIRTH	Ledyard, Connecticut, USA
DATE OF DEATH	June 19, 1999
PLACE OF DEATH	Easton, Maryland, USA