Assistant Professor, Department of Biology, Sonoma State University 1998-present
Research Associate, Romberg Tiburon Center for Environmental Research,
San Francisco State University 1996-1998
Research Associate, Center for Population Biology, UC Davis 1996-1997
Research Assistant, Dept. of Biology, University of California, Los Angeles 1991-1995
Teaching Assistant, Dept. of Biology, University of California, Los Angeles 1989-1995