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Nutrients and Trace Metals in Permanently Well-Mixed Coastal Waters of Korea
흥기훈,양동범,이광우,Hong, Gi Hoon,Yang, Dong Beom,Lee, Kwang Woo The Korean Society of Oceanography 1989 韓國海洋學會誌 Vol.23 No.4
Nutrients and trace metals of copper and nickel were investigated in the inner part of Deukryang Bay (southern coast of Korea) during 1980-81. This region is characterized as permanently well-mixed coastal waters. Because of this hydrographic condition, nutrients and trace metals showed interesting features in their seasonal cycles. The concentrations of dissolved nutrients and dissolved trace metals were higher in fall and winter than in spring and summer, while the concentrations of suspended particulates and particulate trace metals were much higher in winter than the rest of the year. Seasonal changes of nutrients suggest that the addition of nutrients via freshwater runoff during the late summer enhanced phytoplankton growth and subsequently caused phytoplankton blooms in winter. Depletion of nitrate seems to terminate phytoplankton bloom in this region, and copper and nickel appeared to be controlled by the in situ primary production.