河川水質(萬頃江)의 汚染과 底棲生物에 關한 硏究 = The Pollution of the River(ManKyung) and its Influence to the Benthos

다국어 초록 (Multilingual Abstract)

1. The author has investigated the present status of the water pollution and studied its influence on the benthos in the Mankyung River and its branches, which run from Mt. Wonchung to Yellow Sea, in August, 1973.
2. The upper stream, where the branches of Mankyung River, Soyang River, Kosan River, and Chonju River flow together, is presumed to be called the oligosaprobe zone which is gradually changing into ,β-mesosaprobe zone.
3. Though the upper stream of Chonju River, which is not influenced by the various pollutants, belongs to the oligosaprobe zone, the stream near the city of Chonju is so influenced by the pollutants of the domestic and industrial sewage from the city that its water quality is gradually changing into that of the α-me sosaprobe zone.
4. It is found that Ephemereptera mainly inhabits in the oligosaprobe zone and some in the β-mesosaprobe zone. The water quality is going to be changed into more polluted state, fewer or none of the organisms are observed in α-mesosaprobe zone.
5. The aquatic insects such as Ecdyonurus yoshidae, E. kibunensis, Choroterpestrifurcata, and Potamanthuns sp. inhabit dominantly in oligosaprobe and β-mesosaprobe zone, upper stream where Soyang River, Kosan River, and Chonju River flow together. Oligochaeta sp. inhabits dominantly in the polysaprobe zone.
As a result it is found that Ecdyonurus yoshidae, E. kibunensis, Choroterpes trifurcata, and Potamanthus sp. are the indicator species which represent the water quality of oligosaprobe and β-mesosaprobe zone and Oligochaeta sp. is that of polysaprobe zone.

목차 (Table of Contents)

• Summary
• I. 序論
• II. 實驗方法
• III. 實驗結果
• 1. 理化學的 水質調査
• 2. 細菌學的 調査
• 3. 底質의 調査
• 4. 底棲生物의 調査
• IV. 考察
• 1. 理化學的 및 細菌學的 水質
• 2. 河底質
• 3. 底棲生物과 水質
• V. 結論
• 參考文獻