Lewis R. Grosenbaugh (November 4, 1913 - April 22, 2003) was a prominent U.S. Forest Service

United States Forest Service

The United States Forest Service is an agency of the United States Department of Agriculture that administers the nation's 155 national forests and 20 national grasslands, which encompass...

 researcher and head of the Forest Service's first Pioneering Research Unit, in forest mensuration, in Berkeley, California. Known for his contributions to the fields of forest inventory

Forest inventory

Forest inventory is the systematic collection of data and forest information for assessment or analysis. It is also commonly known as timber cruising. It is important for owners to cruise the timber to get an estimate of the value and possible uses of the timber...

, forest measurement, and forest management, Grosenbaugh built on Walter Bitterlich's

Walter Bitterlich

Walter Bitterlich was a world-renowned forest scientist. A notable contributions of his to the forestry profession was the invention of the relascope used in forest inventories.- Early Career :...

 idea of estimating the density of a forest with timber cruising so that individual trees could be used to estimate various stand measures, such as volume per acre.

Career

• 1936. U.S. Forest Service
  United States Forest Service
  The United States Forest Service is an agency of the United States Department of Agriculture that administers the nation's 155 national forests and 20 national grasslands, which encompass...
  
   Junior Forester on the Ouachita National Forest
• 1938 timber management assistant and assistant forester, Ozark National Forest
• 1941 U.S. Naval Reserve, highest rank Lieutenant Commander
  Lieutenant commander (United States)
  Lieutenant commander is a mid-ranking officer rank in the United States Navy, the United States Coast Guard, the United States Public Health Service Commissioned Corps, and the National Oceanic and Atmospheric Administration Commissioned Corps, with the pay grade of O-4 and NATO rank code OF-3...
  
  
• 1946 Associate Forester, National Forests in Florida
• 1946 Silviculturalist, Southern Forest Experiment Station, New Orleans
• 1951 Division Chief of Forest Management Research, Forest Genetics Research, Forest Fire Research, Forest Pathology Research and Watershed Management Research
• 1960 Research Forester and head, Pioneering Research Unit -- Mensuration, Berkeley, California
• 1968 head, Pioneering Research Unit -- Mensuration, Atlanta, Georgia
• 1974 Retired, U.S. Forest Service
• 1977 Adjunct Professor, University of Florida School of Forest Resources and Conservation

Legacy

A notable contribution of Grosenbaugh was adapting Bitterlich's techniques to forest inventories throughout the US. Grosenbaugh promoted the findings of European foresters and brought them the researchers and foresters in the US.

Grosenbaugh had pioneered many original thoughts during his work in statistical sampling

Sampling

Sampling may refer to:*Sampling , converting a continuous signal into a discrete signal*Sampling , converting continuous colors into discrete color components*Sampling , re-using portions of sound recordings in a piece...

of trees in forests, including subsampling trees to obtain a volume to basal area ratio.