茁浦附近 海域의 季節에 따른 基礎生産力 變化

Seasonal Variation of the Primary Productivity in the Vicinity of Chulpo Sea Area

In order to get the basic data of primary productivity. the distribution of chlorophyll-a and phytoplankton in the vicinity of Chulpo sea area were carried out from April to December 1996. The concentration of chlorophyll-a was in the range of 1.54 - 3.95 mg/ m'(2.39 mg/ m L It was relatively lower than the other west sea area. A total of 93 phytoplankton taxa including 80 diatoms were identified from all samples collected. The dominant species of diatoms were Chaetoceros costatus, Coscinodiscus asteromphalus, Nitzshia pacifica, Thalassiosira exentrica, 1'. pacifica in the spring, C. costatus, Thalassionema nitzschioides, T. exentrica, T. pacifica, Thalassiothrix frauenfeldii in the summer, C. ajfinis, C. compressus, C. asteromphalus, Skeletonema costatum, T. nitzschioides, T. subtilis, T. frauenfeldii in the autumn and C. compress us, C. asteromphalus, Rhizosolenia stolterforthii, T. nitzschioides, T. pacifica, T. frauenfeldii in the winter. The total standing crop of phytoplankton samples was 438,280-986,940 cells/f in the spring, 326,760-896,250 cells/f in the summer, 398,740-945,560 cells/f in the autumn and 238,940-681,390 cells/f in the winter.