Small-Scale Spatiotemporal Pattern in the Spawning of Pacific Herring (Clupea pallasii) in the Jinhae Bay, Korea, Estimated Using Hydroacoustic Survey

نویسندگان

چکیده

Acoustic surveys were used to locate coastal Pacific herring (Clupea pallasii) spawning grounds, and the spatial temporal patterns of their in Jinhae Bay, Korea examined. We deployed mooring with a newly designed autonomous echosounder for ~70 days during season from January April 2018. At same time, ship-based acoustic conducted identify distribution twice, at 38 120 kHz, onboard fishing vessel 2018 bay. Fish school signals, including those adult herring, are often detected through January, outside In spring, weak scattering signals fish larvae zooplankton continuously inside Backscatter center Bay was low mid-January early March, gradually increasing higher levels until end March. The backscatter observed correlated well This study proposes that type is valuable tool abundance information other aspects behavior.

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ژورنال

عنوان ژورنال: Applied sciences

سال: 2021

ISSN: ['2076-3417']

DOI: https://doi.org/10.3390/app11052058