Environmental factors affecting seasonal destribution of heterotrophic bacteria in Kum river estuarine sediments

금강 하구 퇴적토에서의 종속영양 세균의 분포에 미치는 환경요인과 계절적 우점속에 관하여

  • Published : 1987.06.01

Abstract

Dominant genera of heterotrophic bacteria were investigated seasonally in Kum River estuarine sediments. Numerical taxonomy on the isolated heterotrophic bacteria were carried out according to their morphological, physiological, nutritional and biochemical characters. Heterotrophic bacteria in the depths of 0 to 10 cm of sampled sediments were almost facultative anaerobes, and 77.9% to 86.9% of them were Gram negative rods. Kominant genera among the isolates were Pseudomonas, Flavobacterium, Micrococcus, Cnterobacteria and Vibrio during sampling periods. According to their character analyses by similarity index(S), the isolates were clustered in fourteen groups at clay type sediments (Site 1) and four groups at sand type sediments (Site 2).

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