한국 남서해역의 식물플랑크톤 군집 출현 및 분포 특성

A summary on the characteristics of marine environment and phytoplankton community in the southwest sea of Korea

The summary on the characteristics of marine environment and phytoplankton community in the Southwest Sea of Korea was fellows; 1) Seasonal fluctuation of marine environments was very various by several water mass such as, Tsushima warm current, Korean coastal waters, Coastal waters of Chinese continent and Bottom cold waters of Yellow Sea. 2) Water quality was very good conditions, but organic matter in surface sediments was very high concentration in seaweed ground and inner bays of the Southwest Sea of Korea. Especially Gwangyang Bay had very high concentration of phosphate. 3) Nutrients of the Southwest Sea of Korea was more high from supply of sea water outside based water mass by coastal waters than from river and streams located inner bay. 4) Phytoplankton community in the Southwest Sea of Korea had very various species compositions, and it was occupied with diatoms through a year. But it was also occupied with phytoflagellates such as dinoflagellates in the high temperature seasons. And it was occupied with nanoplankon in the high temperature seasons. 5) Diatoms showed the patterns of long term variation like a month or a season, but phytoflagellates showed of short term like a few days or a week. 6) Phytoplankton standing crops was appeared with a most high cell density in the winter. It was caused by shallow depth and high tital mixing.