Research Interests:Development and use of technology for economically studying fish and zooplankton distributions and abundances, predator-prey interactions, and ecosystems over large time- and space-scales. Current studies include the development of: 1) autonomous instrumented buoys, landers, and small-craft; 2) a multi-scattering method and hyperbaric chamber for measuring broad bandwidth total target strengths; 3) methods for in-situ multi-frequency target strength measurements; 4) multi frequency techniques for acoustical taxa identification; and 5) an acoustical-optical technique for surveying demersal fish and their physical oceanographic and benthic habitats.
- B.S., Electrical and Computer Engineering, 1986, University of Arizona, Tucson, AZ
- Ph.D., Electrical and Computer Engineering / Applied Ocean Science, 1994, University of California San Diego / Scripps Institution of Oceanography, La Jolla, CA
- D.A. Demer, J.P. Zwolinski, K.A. Byers, G.R. Cutter, J.S. Renfree, T.S. Sessions, B.J. Macewicz, “Prediction and confirmation of seasonal migration of Pacific sardine (Sardinops sagax) in the California Current Ecosystem,” Fisheries Bulletin, 110:52-70 (2012).
- J.P. Zwolinski and D.A. Demer, “A cold oceanographic regime with high exploitation rates in the Northeast Pacific forecasts a collapse of the sardine stock,” Proceedings of the National Academy of Sciences 109(11): 4175-4180 (2012).
- D.A. Demer and J.P. Zwolinski, “Corroboration and refinement of a method to differentiate landings from two stocks of Pacific sardine (Sardinops sagax) in the California Current,” ICES Journal of Marine Science, doi.10.1093/icesjms/fst135 (2013).
- J.P.,.Zwolinski, and D.A. Demer, “Environmental and parental control of Pacific sardine (Sardinops sagax) recruitment,” ICES Journal of Marine Science, doi:10.1093/icesjms/fst173 (2013).
- G.R. Jr, Cutter, and D.A. Demer, “Seabed classiﬁcation using surface backscattering strength versus acoustic frequency and incidence angle measured with vertical, split-beam echosounders,” ICES Journal of Marine Science, doi.10.1093/icesjms/fst177 (2013).
Curriculum Vitae File