Hydroacoustic methods and tools for fish stock assessment and fishery maintenance Part 2. Methods and tools of fishery biohydroacoustics

Studies on influence of hydroacoustic fields on behaviour of commercial species and using of hydroacoustic tools for management of fish and squids behavior to increase the fishing efficiency are overviewed.The methods and means of fisheries biohydroacoustics are considered critically and Sanitary Napkins the reasons of their unsatisfactory using in

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