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http://dx.doi.org/10.7837/kosomes.2017.23.7.869

Mass Balance Using the LOICZ Model in Gomso and Geunso Bays  

Choi, Yong-Hyeon (Tidal Flat Research Center, National Institute of Fisheries science)
Cho, Yoon-Sik (Tidal Flat Research Center, National Institute of Fisheries science)
Choi, Yoon-Seok (Tidal Flat Research Center, National Institute of Fisheries science)
Jeon, Seung Ryul (Tidal Flat Research Center, National Institute of Fisheries science)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.23, no.7, 2017 , pp. 869-877 More about this Journal
Abstract
Recently, Gomso Bay saw a decrease in the production of manila clam, which accounted for 17.8 % of production across the whole country in 2015, while Geunso Bay saw an increase that raised its contribution to 49.1 %. The tidal flats in these bays are inhabited by various benthos, and material flows in and out according to the tide. It is essential to understand the mass balance of these regions while giving consideration to the characteristics of these tidal flats. In this study, we compared areas where aquaculture farms were located in Gomso Bay with those without from May to August 2015. We divided the region into three sea areas (Sector I, Sector II, and Control), and the mass balance was estimated using the LOICZ model. As a result, the DIP of Sector II in Gomso Bay and another region in Geunso Bay, where a manila clam farm was located, were found to be -207.2 kg/day and 77.2 kg/day. The DIN was -4,996.7 kg/day and 926.6 kg/day. These results suggest that Gomso Bay han a higher density than Geunso Bay, which is thought to be mainly due to the feeding action of organisms. Therefore, in order to maintain a healthy tidal flat ecosystem and to sustain the production of manila clams, sustainable management to reduce the high density of tidal flat farms is necessary.
Keywords
LOICZ Model; Mass Balance; Ruditapes philippinarum; Fishery management; High density;
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