Reserve Manager, UC Irvine's Steele/Burnand Anza-Borrego Desert Research Center - a unit of the University of California's Natural Reserve System and a member of the Organization of Biological Field Stations (2012-present); Senior Environmental Scientist, California State Parks' Colorado Desert District (2001-2012; retired); Plant Ecologist (California Department of Fish & Game 1992-2000); Associate Resource Ecologist, California State Parks' Southern Region (1988-1992); Curatorial Assistant, Botany Department, San Diego Natural History Museum (1985-1988); Curator of the Desert Garden, Huntington Botanical Gardens (1981-1985). B.S. (Botany) - San Diego State University; M.S. (Biology - Systematics & Evolutionary Biology) - San Diego State University.