1 Department of Biology, Portland State University, PO Box 751, Portland, OR 97207-0751, USA.
2 Romberg Tiburon Center for Environmental Studies, San Francisco State University, 3152 Paradise Drive, Tiburon, CA 94920-1205, USA.
3 California Polytechnic State University, Department of Biological Sciences, Center for Coastal Marine Sciences, Environmental Proteomics Laboratory, 1 Grand Ave, San Luis Obispo, CA 93407-0401, USA ltomanek@calpoly.edu.