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손규희,한경남 한국해양과학기술원 2007 Ocean and Polar Research Vol.29 No.3
The purpose of this study was to investigate effects of large scale marine sand mining on the marine ecological community. For the study, four stations along the coast were selected and monitored in 1998 and 2001 at mining areas and non-mining areas about the Gyeonggi Bay. The result revealed that in 1998, 9 species of fishes, 16 species of crustaceans, and 6 species of mollusks were collected where as in 2001, 11 species of fishes, 5 species of crustaceans, and 2 species of mollusks were collected, uncovering the fact that fishes have diversified while crustaceans and mollusks have reduced on a grand scale. Also, there were two key characteristics regarding the changes of biological communities in mining and non-mining areas. The first was the dwindling of crustaceans inhabiting the sand area. This outcome may be accounted for by the facts that physical removal of seabed sediments and re-sediment due to expansion of floating particles cause direct influence on the ocean floor ecosystem and have continuous effect on the communities of crustaceans which feed on them. Secondly, the newly arrived species and their population during spring and summer seasons have increased in the non-mining areas and have decreased in the mining area. It can be concluded that highly nomadic fish species migrate toward areas with less disturbance or destruction of ecosystem from marine sand mining, and consequently, the communities of fishes change in the sea area. Setting aside the characteristics of the investigated sea areas where the arriving conditions of species vary by seasons, the clear differences of population of organisms in those areas are due to environmental alterations owing to the marine sand mining ; if those large-scale marine sand mining activities continue in the Gyeonggi Bay, their effects on biological communities in the areas will only grow.
손규희(Kyu Hee Son) 한국생태공학회 2016 한국생태공학회지 Vol.- No.S
The number of mud flat in Korea has been gradually decreased because of the coastal development occurred in last 40 years. However, the policy framework has been established with understanding of the values of marine environment and its ecosystem services. In particular, several mud flat restoration projects in 9 different sites including Suncheon, Sacheon and Gochang have been completed and also in process. The accomplishments produced from these projects assisted to develop technical guideline on restoration concepts, but found out limitations of legal frameworks supporting technical regulations, assessment of site designation and establishment of its objectives. Also, lack of monitoring system to assess the effects of restoration activities drives not to reach rational conclusions, extending the projects nationally. Therefore, it is needed to improve policy framework in order to extend restoration activities as well as understanding of restoration effects by following four points. Firstly, an item assessing effects should be added in selection process of mud flat projects. Secondly, a technical guideline should be in effective legally to follow. Thirdly, detailed roles and duties of stockholders including Ministry of Oceans and Fisheries, local authorities, research institutes, local residents and any industries involved should be described and considered. Fourthly, it is needed to differentiate the budgets depending on types and scales of restoration projects. By considering similar cases implemented inside and outside country, restoration projects applicable to our country will be carried out.