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초록

In this study, to facilitate the management of opportunistic water-borne infections
and unregulated microorganisms, we investigated the characteristics of microbial
communities in the Han River system using MALDI-TOF MS. A total of 467 strains
were isolated from 66 samples in tributaries, main streams, and sewage treatment
plants(STPs). The isolated bacteria in order of abundance were Aeromonas spp.(39.6%),
Klebsiella spp.(9.4%), Proteus spp.(8.6%), and Enterobacter spp.(7.1%). Comparisons of
microbial community characteristics at each site showed, it was found that some bacteria
detected in tributaries were derived from the effluent water of STPs. In contrast to the
tributaries, main streams did not contain E. coli, and their levels of Klebsiella spp. were
relatively low. Therefore, it is considered that water quality control for fecal
contamination is more important necessary in the tributaries than in the main streams.
Antimicrobial resistance tests of five major strains