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1 November 2014 Impact of Sand Extraction on Fish Assemblages in Gyeonggi Bay, Korea
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Hwang, S.W.; Lee, H.G.; Choi, K.H.; Kim, C.K., and Lee, T.W., 2014. Impact of sand extraction on fish assemblages in Gyeonggi Bay, Korea

During 2006 and 2007, 35.0 × 106 m3 of marine sand was extracted by the construction industry from Gyeonggi Bay, which is an area within the coastal waters off the Taean District of Korea. The goal of our study was to compare the catches and assemblage structure of fish in this sand mining area (SMA) with those of two other nonmining areas (NMAs) in the bay. An otter trawl was used to obtain fish samples in each area. Both cluster analysis and nonmetric multidimensional scaling of the species composition in the sampled areas showed a higher similarity between the two NMAs than between the NMAs and the SMA. Furthermore, the SMA had significantly lower species richness (R1), species diversity (H′), and fish abundance compared with the two NMAs. These results could be associated with bottom disturbance related to the mining of seabed sediments. In conclusion, we confirm that sand mining processes directly influence the Gyeonggi Bay sea floor ecosystem and have a continuous effect on the assemblage of fish in this ecosystem.

Sun Wan Hwang, Hyung Gon Lee, Keun Hyung Choi, Chong Kwan Kim, and Tae Won Lee "Impact of Sand Extraction on Fish Assemblages in Gyeonggi Bay, Korea," Journal of Coastal Research 30(6), (1 November 2014).
Received: 31 July 2012; Accepted: 9 December 2012; Published: 1 November 2014

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