FISH 497 Fisheries Acoustics: Principles and Applications

Fisheries acoustics uses sound to detect, map, and count distributions of aquatic organisms. Use of acoustic data in the management of harvestable resources and ecosystem research is increasing due to advances in electronics and the trend toward ecosystem management. Accurate conversion of acoustic data to estimates of animal size and population abundance requires an understanding of the transmission of sound through water and the scattering properties of aquatic organisms. This course will introduce the principles of using sound as an aquatic sampling tool and the applications of acoustics in fisheries management and research. The course will include lectures, assignments, laboratories, and an acoustic survey. Current echosounder hardware and software will be used to survey and count fish distributions in Lake Washington. Computer visualizations will be used to illustrate the aural reflective properties of fish.