Hydroacoustic survey of spatiotemporal stability and distribution of demersal fish aggregations in the coastal region SCOPUS KCI

Title
Hydroacoustic survey of spatiotemporal stability and distribution of demersal fish aggregations in the coastal region
Author(s)
Kang, D.; Lee, C.; Cho, S.; Myoung, J.-G.
KIOST Author(s)
Kang, Don Hyug(강돈혁)Myoung, Jung Goo(명정구)
Publication Year
2008
Abstract
Hydroacoustic technique was used to analyze spatiotemporal stability and distribution of demersal fish aggregations in the coastal region to overcome some limitations of the existing methods such as net and diving. The survey was carried out in the Baekeurn Bay on the south coast of Korea in January 2007. The bottom depth in the study site ranges from 7 to 25 in. In order to outline aggregations of demersal fish initial scanning using 200 kHz split-beam transducer was randomly conducted over the large area. Having detected fish aggregation in the specific region, intensive acoustic survey of irregular star pattern was carried out along 14 transects across the area in question. The results of the acoustic survey show that all demersal fish aggregations are concentrated about 5 in from sea bottom having a slight slope and remain steady with no spatial or temporal variations during acoustic survey. The hydroacoustic method used in this study offers a new approach to understand vertical and horizontal distribution, spatiotemporal stability, and biomass estimate of demersal fish aggregations in coastal regions. Additionally, the number of individual fish estimated from in situ acoustic target strength data can be used to understand the standing stock of demersal fish aggregation.
ISSN
1598-141X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4567
DOI
10.4217/OPR.2008.30.1.079
Bibliographic Citation
Ocean and Polar Research, v.30, no.1, pp.79 - 87, 2008
Publisher
Korea Ocean Research and Development Institute
Subject
acoustic survey; biomass; coastal zone; demersal fish; fish aggregating device; fishery survey; spatial variation; temporal variation; transducer; Asia; Eurasia; Far East; Korea; South Korea
Keywords
Demersal fish; Fisheries acoustics; Irregular star pattern survey; Spatiotemporal stability
Type
Article
Language
Korean
Document Type
Article
Publisher
Korea Ocean Research and Development Institute
Related Researcher
Research Interests

Fish ecology,Fish taxonomy,Fish stock enhancement,어류생태,어류분류,어류자원증식

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