소흑산도의 토양미생물과 해양미생물의 환경적 분포 = The Environmental Distributions of Soil and Marine Microbes in Sohuksan-do

다국어 초록 (Multilingual Abstract)

The physicochemical properties of soil and the distributions of both soil and marine marine microorganisms of Sohuksan-do, Chonnam were investigated on 22th of May, 1988. The results were as follows:
1. The physicochemical properties of soil
5. investigated sites revealed their pH values ranged 5.0-5.9(mean, 5.52).
The values of electroconductivity, organic matter, total nitrogen, and water content were in the range of 140-190 ㎛ho/㎝ , 9.8-18.8%, 1.25-3.62㎎/g , and 27.2-46.5%, respectively.
2. Distribution of soil microbes
The total count of bacteria, fungi, and actinomycetes were in the range of 3.0 -8.8 ×10??cells/g soil, 0.7-1.5 ×10??cells/g soil, and 2.0-2.8 ×10?? cells/g soil, respectively. Bacteria occupied about 64.2% of total population, and fungi 9.9%, actinomycetes 26.0%, respectively.
Of the total count of each group, cellulolytic bacteria occupied about 13.7% of total bacteria, and celulolytic fungi, about 49.8%, cellulolytic acvtino-mycetes, about 12.2%, respectively. It was worth noting that cellulolytic fungi occupied a large proportion of the total count of fungi, meaning active progress of cellulose decomposition in this area.
3. Distribution of marine microbes
The popolarion density of marine bacteria was found to be in the range of 1.07 -4.77 ×10??cells/㎖ at the surface layer, 1.02-7.77 ×10??cells/㎖ in the middle layer, and 2.53 6.58 ×10??cells/㎖ at the bottom layer, respectively. These results showed tendency of higher density at the euphotic zone. In caseof physiologically characteristic bacteria, the population density of proteolytic bacteria was higher than that of either lipolytic or amylolytic bacteria, meaning independence of this area from incorporation of nutrients from outside.