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        의암인공호의 (衣岩人工湖) 오염화에 관한 육수학적 고찰 - 도시하수가 의암인공호의 수질 및 plankton 에 미치는 영향 -

        조규송,라규환 ( Kyu Song Cho,Kyu Hwan Ra ) 한국하천호수학회 1971 생태와 환경 Vol.4 No.3·4

        1) This study is a comparision of two sample stations which are not directly affected by sewage to a station which is directly affected. 2) Water temperature, pH, disolved oxygen, NH₃-N, NO₃-N, Cl^-, COD, BOD, Total hardness, PO₄^(-3) and Transparency were measured. Also plankton fauna were studied with neccessary considerations being given to seasonal variations. 3) The sewage outflow sample station howed high Cl^-, COD, BOD over the entire study period with especially high values during the summer. 4) In the sewage area the primary productivity of phytoplankton was found to be very high and oxygen saturation levels were found to be maximum at all depths for all three stations, except at station 3 where it was low for the bottom sample only. The low level on the station 3 bottom sample was stributed to the decomposition of bottom organic materials. 5) In the plankton composition studies, the genus Rotifera was found to be very much more abundant at station 3 than at the others. 6) At station 3 the dominant species (intolerant species) were as follows Astasia sp., Eudorina elegans, Euglena tripleris of protozoa, Brachionus calyciflorus, B. quadridentatus, B. urceolaris, Filina longiseta, Monostyla sp., Notholca acuminata Plstyias patulus of Rotifera, Anabaena sp., Aphanizomenon ovalisporum, Lyngbya acuminata, Osillaforia sancta of Cyanophyceae, and Mougeotia scalaris of Chlorophyta.

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