마산만과 가덕수로 표층퇴적물의 중금속 원소와 저서성 유공충 특성 = Characteristics of Heavy Metals and Benthic Foraminifera on Surface Sediments in Masan Bay and Gadeog Channel, Korea

다국어 초록 (Multilingual Abstract)

Nine surface sediments from Masan Bay and Gadeog Channel were taken for grain size and geochemical and foraminiferal analyses in August 2002. The sediments consist of mud with 7.29-8.54 in mean grain size. Average concentrations of Al, Fe and Mn are higher in Gadeog Channel than those in Masan Bay. On the other hand, average concentrations of Pb, Cu, Zn, Cd, Cr, Ni and V are higher in Masan Bay than those in the channel. The latter group of elements show the highest concentration at station M4, off the outfall of treated wastewater disposal. Eighty-one foraminiferal species are identified in total assemblages, including 21 species of living populations. The number of individuals, species number, species diversity and equitability in Masan Bay have lower values than those in Gadeog Channel. The foraminiferal fauna off the outfall is relatively poor. Compared to geochemical and foraminiferal data obtained in 1996, heavy metals are more enriched, and the characteristics of foraminifera are little changed. These features indicate that the pollution of Masan Bay has not been reduced.

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