Development and application of a combined industry/scientific acoustic survey of orange roughy in the Eastern Zone
CSIRO Oceans and Atmosphere Hobart
Principal Investigator: R. J. Kloser, T. E. Ryan, A. Williams & M. Lewis
1. To assess the biomass of orange roughy based on acoustic surveys on the Eastern Zone fishing grounds during the spawning period using industry vessel acoustics over an extended period and the CSIRO acoustic package during the anticipated peak spawning period.
2. To assess how industry acoustics may be best used in the long term management of the resource.
3. To compare the sensitivity and precision of acoustic surveys using scientific vessel-mounted and towed-body acoustics and industry vessel-mounted acoustics.
4. To further develop the acoustic method by improving the multi-frequency technique for species identification.