임병란 이기세 안규홍 2024-01-21T02:04:07Z 2024-01-21T02:04:07Z 2021-09-06 2006-11 1225-7672 https://pubs.kist.re.kr/handle/201004/134981 The differences in microbial community structures between planktonic microorganism and biofilm in rivers were investigated using respiratory quinone profiles. The compositions of microbial quinone for 4 tributaries of the Kyongan Stream located in/flowing through Yongin City, Gyeonggi-Do were analyzed. Ubiquinone(UQ)-8, UQ-9, menaquinone(MK)-6 and Plastoquinone(PQ)-9 were observed in all samples of planktonic microorganism and biofilm for the sites investigated. Most planktonic microorganism and biofilm had UQ-8(15 to 30 %) and PQ-9(over 30 %) as the dominant quinone type. These results indicated that oxygenic phototrophic microbes(cyanobacteria and/or eukaryotic phytoplankton) and UQ-8 containing proteobacteria constituted major microbial populations in the river. The quinone concentration in the river waters tested, which reflects the concentration of planktonic microorganisms, increases with increasing DOC. Further research into this is required. The microbial diversities of planktonic microorganism and biofilm calculated based on the composition of all quinones were in the range from 4.2 to 7.5, which was lower than those for activated sludge(ranging from 11 to 14.8) and soils(ranging from 13.4 to 16.8). The use of quinone profile appears to be a useful tool for the analysis of microbial community structure in river. 대한상하수도학회 Quinone profile를 이용한 하천생태계의 미생물군집구조 해석 Analysis of Microbial Community Structure in River Ecosystem Using Quinone Profiles Article 2 상하수도학회지, v.20, no.5, pp.685 - 690 상하수도학회지 20 5 685 690 kci ART001125437 microbial community structure microbial diversity quinone profile river 미생물군집구조 미생물다양성 퀴논프로화일 하천 microbial community structure microbial diversity quinone profile river