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Acoustic Survey

  • Kazushi Miyashita
Chapter
Part of the Fisheries Science Series book series (FISHSS)

Abstract

Hydroacoustic methods are important for marine studies because of their advantages of directness, continuity, and quickness. Acoustic data provide quantitative information from a variety of marine organisms, including not only fishery-target fish species but also nontarget zooplankton, mesopelagic fish, and the sea forest. Characterizing the acoustic environment by discriminating, classifying, and quantifying biological backscatter is promising to better understand ecological processes, such as prey-predator relationships, habitat selection, and biomass estimates, which can help with ecosystem-based fisheries management. This chapter describes how acoustic methods are beneficial for monitoring marine organisms by (1) helping identify and discriminate zooplankton and larval, juvenile, and adult fish based on backscattering strength frequency characteristics and biomass estimates, (2) describing advances in acoustic applications for ecological monitoring, and (3) developing an acoustic monitoring system for “shirasu” (Japanese anchovy post-larvae) fisheries management now in operation. Finally, we provide some perspectives on an acoustic monitoring system for ecosystem-based fisheries management.

Keywords

Acoustics Acoustic monitoring system Biomass estimation Ecosystem-based fisheries management Quantitative echo sounder SV difference method 

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Copyright information

© Springer Japan KK and the Japanese Society of Fisheries Science 2018

Authors and Affiliations

  1. 1.Laboratory of Marine Ecosystem Change Analysis, Field Science Center for Northern BiosphereHokkaido UniversityHakodateJapan

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