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亞鉛環境勾配에 의한 綠藻類個體群生長의 生態學的 特性 Ecological Characteristics of Some Algal Populations along Environmental Gradients of Zine

Journal of Plant Biology 1977년 20권 3호 p.119 ~ 126
송승달,
소속 상세정보
송승달 ( Song Seung-Dal ) 
Kyungpook National University Deptarment of Biology

Abstract


The maximum relative growth rate of algae treated with Zinc was shown as follows: 15,8,6,3 and -5% per day for the rather sensitive Chlorella sp. populations, or 14,7,5 and 4% per day for the Pleurococcus sp. populations, and 22,20,13,9 and 7% per day for the more resistant Scenedesmus spinosus populations, respectively for the culture medium with 0,1,5,10 and 20 ppm of Zinc treatment. With mixed cultures of Chlorella sp. and Scenedesmus spinosus populations, the growth of the Chlorella sp. population overcame that of the S. spinosus population from the cultures treated with relatively low concentration of Zinc. On teh contrary, the population growth of the latter resistant species overcame that of the former sensitive species when the concentration of Zinc was above 5 ppm Zn of the medium. This paper describes the results of further investigations of the effects evaluated by direct cell counts method, optical density comparisons, oxygen production and consumption determination and the measurements of the fate of Zinc treated in the solutions.

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