Siegfried von Ciriacy-Wantrup

Siegfried von Ciriacy-Wantrup was a German academic. Born in Langenberg, Germany in 1906. After doing his master's work in Illinois, he returned to Bonn to get his Ph.D. in 1931. In 1936, he left Nazi Germany for the United States, arriving at UC Berkeley and the Department of Agricultural and Resource Economics in 1938.

Wantrup did early work on natural resource management, contributing important concepts related to resource economics and policy. Wantrup derived criteria for sustainability that included the "Safe Minimum Standard" (the threshold below which loss is catastrophic), irreversibility, and unknown future probability (Option Value). He also wrote on "Common Property" and the "Extramarket Values" of collective goods.

He died in 1980 at the Men's Faculty Club. Provided by Wikipedia