Korean Journal of Ecology and Environment (생태와환경)
- Volume 33 Issue 3 Serial No. 91
- /
- Pages.244-250
- /
- 2000
- /
- 2288-1115(pISSN)
- /
- 2288-1123(eISSN)
Water Quality Assessment by Algal Growth Potential (AGP) from Midstream to Downstream of the Kum River
금강 중 ${\cdot}$ 하류에서 AGP에 의한 수질평가
-
Cho, Kyung-Je
(School of Environmental Science and Engineering, Inje University) ;
- Shin, Jae-Ki (School of Environmental Science and Engineering, Inje University)
- Published : 2000.09.30
Abstract
Algal growth potential (AGP) bioassay were conducted to assess the water quality and fertility in the Kum River from March 1998 to June 1999. AGP values were always the highest at the conjuction site of the Kapchon, which is a tributary of the Kum River. Average value of AGP by Microcystis aeruginosa in the main river and tributary was 17.0 mg dw/l, 48.3 mg dw/l, respectively. AGP values decreased towards the lower part of the river and consisted in the water quality or nutrient analysisresults. Among the tributaries, AGP of the Kapchon, Mihochon and Soksongchon were relatively high, and the average value was 161.2, 50.3 and 125.6 mg dw/l, respectively. AGP value in the Yukuchon was lowest among the study stations with <2.7 mg dw/l. Water quality in the lower part of the Kum River deteriorated in drought season, and the AGP values of this season were higher than those in other seasons. Based on correlation analysis between AGP results and nutrients, limiting nutrient appeared to be P because SRP (r = 0.99) was higher than other nutrients, and N uptake in algal growth was preferred by
금강 중