羽布ダム(三河湖)におけるケイ藻と水質との関係について

概要

論文の詳細を見る
The Habu dam is a reservoir for irrigation on the Tomoe river, a tributary of the Yahagi river. This field survey was conducted between May 13 and November 18,in 1981. To assess the river water quality, water samples and plankton were collected almost every day during this study period. The results of this study showed that seasonal changes in quality assessed in terms of paramenters such as COD, T-N, and T-P distinguished five distinctive periods. In this lake, organisms of two species of algae. Asterionella and Fragilaia, increased in number greatly in spring and much less in autumn. The seasonal changes in type and quantity of phytoplankton in this lake depended closely on temperature of the water and concentration of phosphorus. The T-N and T-P concentrations ranged between 14-110 μg at/1 and between 0.2-3.1 μg at/1,indicating that this lake is Mesotrophic type.
四日市大学の論文
1999-03-30