서해산 김 엽체상의 미소생물과 김의 병해와의 관계에 대한 연구 -III. 김 엽체상에 부착된 종속영양세균의 계절적 변화- = A Study on the Relationships Between the Epiphytic Microbes and the Blight of Porphyra Species from the Coastal Waters of the Yellow Sea, Korea -III. Seasonal Variation of Heterotrophic Bacteria on the Blades of Porphyra Species Near Mokp'o-

다국어 초록 (Multilingual Abstract)

To study the seasonal variation of heterotrophic bacteria on the blades of Porphyra species, samples were collected In the intertidal zone near Mokp'o of the Yellow Sea from February to December, 1990 Annual distribution of heterotrophic bacteria on the blades of Porphyra species ranged from $6.9\times10^2\;to\;1.04\times10^5\;cfu/cm^2$ at site 1, and from $9.4\times10^3\;to\;2.93\times10^5\;cfu/cm^2$ at site 2. Average sixty-five percent of isolates from the blades of Porphyra species were rods and $52.1-82.7\%$ of isolates were Gram-negative. Most isolates showed starch hydrolysis$(68\%)$ on March, but showed Poor utilization of carbon sources and no $H_2S$ production. Dominant genus isolated from the baldes of Porphyra species were Alcaligenes spp., Moraxella spp., on March and Micrococcus spp., Moraxella spp., Corynebacterium spp., on November.