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http://dx.doi.org/10.35399/ISK.33.1.4

Seasonal Variation in Fish Species Composition in the Eelgrass Bed of Yeocha on Hansando Island, Tongyeong-si, Southern Korea  

Park, Sae-Woong (Marine Bio-Education and Research Center, Gyeongsang National University)
Kim, Jun-Sop (Ocean & Fisheries Science Institute)
Lee, Yong-Deuk (Fisheries Resources Research Center, National Institute of Fisheries Science)
Gwak, Woo-Seok (Marine Bio-Education and Research Center, Gyeongsang National University)
Publication Information
Korean Journal of Ichthyology / v.33, no.1, 2021 , pp. 22-30 More about this Journal
Abstract
This study aimed to determine the monthly fish species composition in the eelgrass bed of Yeocha on Hansando Island, Korea, and to obtain fish species data by comparison with the nearby Bongam. The species composition was determined from monthly samples collected by a surf net from August 2009 to July 2010. During the survey, total 2,394 individuals of 29 species and 10,378 g of fish were collected. The dominant species were Gymnogobius heptacanthus, followed by Takifugu niphobles, Rudarius ercodes, Chaenogobius annularis, and Ditrema temminckii, accounting for 89% of the total individuals sampled and 83% of the fish biomass collected. The fish assemblages in the eelgrass bed varied seasonally; the number of individual fishes increased in May and was highest in July, whereas the biomass attained its highest level in April and subsequently decreased. This study confirms that the seagrass bed plays an important role as a fish nursery ground, and it is necessary to investigate changes in the coastal fishes of the southern coast via periodic surveys.
Keywords
Species composition; eelgrass bed; Tongyeong; fish assemblage; southern coast;
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