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양양 (襄陽) 남대천 (南大川) 수역의 식물성플랑크톤에 대한 분류와 구계 (區系)
정영호,이인태 ( Yung Ho Chung,In Tae Lee ) 한국하천호수학회 1983 생태와 환경 Vol.16 No.1·2
Phytoplanktons and environmental conditions in the Yang-yang, Nam-Dae-Cheon River were investigated at four stations on July 24, 1981. In physicochemical conditions, water temperature at all of four stations was lower than air temperature, and pH might have some difference between station 1,3,4 (pH value=6.5) and station 2(pH value=6.2). But it might be no significance to discuss about the difference of pH value ranges of the two water bodies. Total number of phytoplanktons identified were 80: 3phyla, 3 classes,2 subclasses, 12 orders, 2 suborders, 19 families, 25 genera, 66 species, and 14 varieties. The number of occuring species of phytoplanktons was higher at station 1 than station 2,3, and 4. It was found that 30 species 6 varieties from station 1 25 species 5 varieties from station 2; 27 species 6 varieties from station 3; 22 species 5 varieties from station 4 were occured. The common species of the Yang-yang, Nam-Dae-Cheon River in the summer season were recorded to be Synedra ulna, S. ulna var. amphirhynchus, Cymbella affinis, C. cuspidata. Particularly in the diatom river communities, all of these four stations were characterized as the free-flowing water type of upperstream because of occuring the mountaneous or subalpine species, Diatoma anceps, Navicula alpina, and N. lata.