부산대학교 도서관

For the purpose of acquiring the biological parameter in cold region sea, this study presumed the Light-photosynthesis curve of phytoplankton and acquired the the maximum photosynthetic rate and the optimum light intensity for 11 cases in 8 sea areas surrounding Hokkaido. The maximum photosynthetic rate is the range of the value of the literature values in the low nutrient, low temperature, and high temperature sea areas, so the value of cold region sea does not change a lot as compared with the literature value. The optimal light intensity was near value of the literature value of Honshu or Hokkaido. Furthermore, as a result of calculating the amount of primary production by ecosystem model, it was 29.04~63.21 and 32.54~185.87 mgC/(m2·day) at Musashi Bank and the 4 areas of the North Japan Sea, respectively, and the feature of the North Japan Sea was shown. When primary production of cold region sea will be considered in the future, it is thought that the result of this research serves as effective knowledges.