Algae. 1988; 3(2): 183-192.

Standing Crop of Phytoplankton in Lake Yongsan

Kwang Young Kim, Chung Il Choi

Department of Oceanography, Chonnam National University, Kwangju and Department of Earth & Marine Sciences, Hanyang University

Standing crop of phytoplankton was studied at four stations in Lake Yongsan, Korea from October 1986 to June 1987. Uneven distribution of phytoplankton standing crop was evident ; station 1 at the riverine of the lake showed high while station 4 located near the irver barrier showed low standing crop. Chlorophyll α concentration ranged 0.12-6.78 mg/m3 throughout the study period and showed a late summer peak and following late spring burst. Results from cell count and chlorophyll α content demonstrated that these distributions tend to increase with increasing distance from the river barrier. Correlation between chlorophyll α and cell count of Bacillariophyceae was significant. Diversity indices were relatively low.

Keywords : Chlorophyll α, Diversity index, Lake Yongsan, Standing crop of phytoplankton