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곽노태,안태영 한국미생물학회 1997 미생물학회지 Vol.33 No.1
이 글에서는 작은 저수지인 천호지를 대상으로 부영양화의 진행과 원인 그리고 이에 따른 미생물생태학적인 변화를 살펴보았으며 끝으로 호수를 회복시키는 부영양화의 대책에 대하여 간단히 기술하였다. 천호지는 충청남도 천안시 단국대학교 천안 캠퍼스 앞에 위치한 0.31km$^{2}$의 작은 관개용 저수지로 1995년 평균 엽록소 a의 농도가 75.$\mu$g/l에 달하는 등 부영양화 현상이 매우 심하게 나타났고 있다(1). 최대 수심은 7-8m, 평균 수심은 3m정도로 얕아 성층현상은 나타나지 않으며 평균 체류시간은 3-4개월이나 집수역에서 저수지까지의 유달 시간이 짧아 집수역에서의 실 체류시간은 1주일 미만일 것으로 추정된다.
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안태영,곽노태,고유석 ( Tae Young Ahn,No Tae Kwak,You Seak Go ) 한국환경생물학회 1992 환경생물 : 환경생물학회지 Vol.10 No.2
From April 1990 to March 1991, nineteen variables of physico-chemical factors, bacteria and activity were investigated 12 times at the 3 stations in Lake Daeho and the influence of environmental factors on the distribution of bacteria and activity were analysed through stepwise multiple regression. The results of multiple regression were as follows. At station 1, the variation of bacterial populations and activity was controlled by that of available nitrogen, ammonia and nitrate. At station 2, water temperature and BOD were shown as the major factors affecting the variation of microbial populations. The variation of heterotrophic bacteria and spore forming bacteria could be controlled by the variation of BOD and water temperature could explain the variation of proteolytic and lipolytic bacteria. The variation of total coliform bacteria depended on the variation of pH and nitrate by 68%. Fifty five percent of the variation of glucose turn-over rate was affected by phospate and salinity. At station 3, dissolved oxygen was found out as a main factor governing the variation of bacterial populations. The variations of heterotropic, proteolytic and lipolytic bacteria depended on dissolved oxygen by 32%, 32%, 58% and 59% repectively. Lipolytic bacteria was affected by water temperature as same as at station 2. And glucose turnover rate had a close relation to chlorophyll a.
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安泰永,郭魯泰 단국대학교 1995 論文集 Vol.29 No.-
From November 1989 to August 1990, distributions of heterotrophic bacteria and coliform bacteria were investigated 8 times at 8 stations in Han River and 4 times at 10 stations in the tributary streams. In order to measure the heterotrophic activity, glucose uptake rate was also analysed. The distribution of heterotrophic bacteria ranged from 1.9 x 10 exp(3) to 7.1 x 10 exp(6) CFU/ml (mean value; 6.5 x 10 exp(5) CFU/ml) in main stream of Han river. Total coliform bacteria and fecal coliform bacteria ranged from 10 to 2.5 x 10 exp(5) CFU/ml and from 5 to 1.1 x 10 exp(3) CFU/ml respectively. The glucose uptake rates ranged from 0.3%/h to 51.5%/h with 4.1%/h of average uptake rate. At the downstream stations along the river, the number and activity of bacteria were high. The seasonal variation of bacterial number and activity was found to be lower than stational one. The activity of microorganisms was showed the highest value in spring and the distribution of heterotrophic bacteria was the highest in summer.
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이옥재,강은숙,곽노태,안태영 ( Ok Jae Rhee,Eun Sook Kang,No Tae Kwag,Tae Young Ahn ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.1
The nitrification rate and environmental factors were estimated 10 times from August 1992 to October 1993 in Lake Soyang. The number of nitrifying bacteria and nitrification rate were measured with MPN and ^14C-dark incorporation method, respectively. The distribution of ammonia-oxidizing bacteria was 0.5-220MPNml^-1 (mean, 11MPNml^-1) and that of nitrite-oxidizing bacteria was 0.5-92MPNml^-1(mean, 9MPNml^-1). The range of nitrification was estimated 0.01-2.25㎍-Nl^-1day^-1(mean,0.28㎍-Nl^-1day^-1). It was shown through multiple regression analysis from all data that the major factor affecting to nitrification rate was water temperature and the minor factor was pH. The distribution of nitrification rate and ammonia-oxidizing bacteria were not correlated.
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