多摩川の化學・生物學的研究(第2報)
植物性プランクトンの定量的調査
1934 年 12 巻 7 号 p. 359-365
詳細
1934 年 12 巻 7 号 p. 359-365
The seasonal fluctuation of phytoplankton was observed quantitatively during Dec., 1932 and January, 1934 at St. Futakotamagawa. Diatom was the most predominant species in phytoplankton and appeared abundant'y in the both seasons of winter and spring. The maximum occurrence fell on 21, Dec., 1932, counting 3, 230 per litre and Melosira varians and Synedra spp. were representatives in the diatom. The vertical distribution of marine plankton was examined in the water of Rokugobasi with 7m. in depth.
