Background
Holdridge, Leslie Ransselaar was born on September 29, 1907 in Ledyard, Connecticut, United States. Son of Samuel E. and Phebe J. (Holmes) H. Bachelor of Science in Forestry, University Maine, 1931, postgraduate, 1931-1932.
Holdridge, Leslie Ransselaar was born on September 29, 1907 in Ledyard, Connecticut, United States. Son of Samuel E. and Phebe J. (Holmes) H. Bachelor of Science in Forestry, University Maine, 1931, postgraduate, 1931-1932.
Graduate School, 1959-1960.
And he is the father of composer Lee Holdridge. In his famous 1947 paper, 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.
Member American Fern Society, American Botanical Society, American Forestry Society, International Society Tropical Forresters, International Dendrology Union, International Society Tropical Ecology, Association Tropical Biology, New York Academy of Sciences, American Association for the Advancement of Science, Sigma Xi, Xi Sigma Pi. Congregationalist.