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http://dx.doi.org/10.3796/KSFOT.2021.57.4.351

Vertical distribution of giant jellyfish (Nemopilema nomurai) in the coastal waters of Korea and its correlation analysis by survey method  

OH, Sunyoung (Department of Fisheries Sciences, Chonnam National University)
KIM, Kyoung Yeon (Oceanic Climate and Ecology Research Division, National Institute of Fisheries Science)
LIM, Weol Ae (Research and Development Planning Division, National Institute of Fisheries Science)
PARK, Geunchang (Department of Fisheries Sciences, Chonnam National University)
OH, Hyunjoo (Oceanic Climate and Ecology Research Division, National Institute of Fisheries Science)
OH, Wooseok (Department of Fisheries Sciences, Chonnam National University)
LEE, Kyounghoon (Department of Marine Production Management, Chonnam National University)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.57, no.4, 2021 , pp. 351-364 More about this Journal
Abstract
In this study, the vertical distribution of giant jellyfish analyzed echo counting method and such survey methods as sighting and trawl were used to compare its density estimates. In May and July 2021, surveys were conducted in the East China Sea and the coastal waters of Korea. As a result, Nemopilema nomurai were evenly distributed in all water layers in East China Sea in May and July. When considered the correlation by each survey methods, it is possible to identify jellyfish in the surface area by sighting method and using sampling net; however, it has a low correlation with acoustic estimates due to marine environmental factor such as weather condition, wind and atmospheric pressure. Therefore, the result can be utilized by basic data when estimating jellyfish's distribution patterns and density estimates from each survey methods hereafter.
Keywords
Echo counting; Acoustic survey; Giant jellyfish; Vertical distribution; Density estimates;
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Times Cited By KSCI : 4  (Citation Analysis)
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