미생물학회지 (Korean Journal of Microbiology)
- 제30권2호
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- Pages.113-118
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- 1992
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- 0440-2413(pISSN)
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- 2383-9902(eISSN)
소양호에서의 유기인산염 분해율
초록
소양호에서 인(P) 의 순환 과정중 유기인산염 분해율을 1990 1월 부터 1991녕 4 월 까지 측정한 결롸 1-2220 nM/l/hr 의 범위였다. 표층의 경우 8월에 가장 높았으며, 성층이 깨지는 10월과 11 월에는 8월보다 1/240배 이하로 낮은 값이였다. 우기인산염 분해율과 엽록소 a 와는 높은 상관 관계(R = 0.69) 를 나타내었고, specific activity는 겨울에 45-122 nM/hr/
To elucidate a part of phosphorus cycle an'd the nutritional status of phosphorus. the degradation rates of organic phosphate by phosphatase activity (PA). were studied at the water column of Lake Soyang. from March 1900 to April 1991. Phosphatase activity showed the range of 1-2220 nMillhr. Its maximum value was recortled on August and minimum during October and November. The PA and chlorophyll u v~luess howed high correlation coefficent (0.69). and the values of specific astivity was highest during Winter, 45-12\ulcorner nMihripg chl. a, and lowest on October. 2 nMl hripg chl. 11. The values of PA and bioavailable dissolved inorganic phosphate (DIP) showed negative correlation in surface water. During destratification period (Oct. and Nov. 1990). the values of PA were about 11240 times lower than those during August albeit high concentration of chlorophyll a (1.7- 7.2 mglm'). Such results seem to be cause'd by DIP supply from the metalimnion. hypolimnion ant1 sediment. With these results. phosphate was sufficient to sustain the biomass in Autumn. and internal loading of phosphate shoultl accelerate the eutrophication in Lake Soyang.