- ENGLISH
- P-ISSN2287-8327
- E-ISSN2288-1220
- SCOPUS, KCI
ISSN : 2287-8327
금강 하구둑 인근에서 미생물군집의 특성
Characteristics of Heterotrophic Bacterial Population in the Artificial Lake Geumgang Near Estuary Barrage
박석환 (군산대학교)
최강국 (한국생명공학원)
이근광 (나주대학)
이건형 (군산대학교)
Abstract
The monthly variations of physico-chemical and microbiological water quality were investigate in the artificial Lake Geumgang near estuary barrage. Sixty heterotrophic bacteria were isolated and identified by amplification and sequencing of 16S rDNA. Water temperature, pH, and inorganic nutrients(NH4-N, NO2-N, NO3-N, PO4-P) were measured. Concentrations of DO, BOD, and inorganic nutrients were lower than in the middle-stream of Geum river. The population densities of heterotrophic bacteria and total coliforms varied from 4.1 ± 1.0 × 102 to 6.7 ± 1.1 × 103 cfu ml-1, and 0 to 2.3 ± 0.6 × 102 cfu ml-1, respectively. Among the measured numbers of physiological groups of bacteria, cellulolytic bacteria showed higher population densities than those of other physiological groups. Bacterial community structure was analysed based on 16S rDNA partial sequencing. Among 60 isolates, dominant genus was seudomonas (20 strains).
- keywords
- Artificial Lake Geumgang, Heterotrophic bacteria, Physico-chemical water quality, Physiological groups of bacteria, Total coliform, 16S rDNA analysis
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