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동복호 (同福湖) 유입하천의 조류증식능에 (藻類增植能) 관한 연구
김현아,이나나,유춘만,위성욱,주현수,이종빈,위인선 ( Hyun Ah Kim,Na Na Lee,Chun Man Yu,Seong Uk Wui,Hyun Soo Joo,Jong Bin Lee,In Sun Wui ) 한국환경생물학회 1995 환경생물 : 환경생물학회지 Vol.13 No.1
On filtered and autoclaved water samples from the upper stream of Lake Tong-Bok, physico-chemical analysis and algal growth potential (AGP) test using Selenastrum capricornutum Printz were performed from October, 1991 to July, 1992 in order to assess fertility potential of the lake and to identify possible limiting nutrients. Water temperature of the lake was fluctuated from 3.8℃ to 30.7℃, the range of pH was 6.0 to 8.0, the level of dissolved oxygen ranged from 5.5㎎/ℓ to 14.4㎎/ℓ, biochemical oxygen demand varied from 0.3㎎/ℓ to 7.6㎎/ℓ, and suspended solides was fluctuated from 0.7 ㎎/ℓ to 24.5㎎/ℓ. Results of nutrient analysis were as followings. The level ammonia was from ND(<0.01㎎/ℓ) to 0.74㎎/ℓ, nitrite and nitrate were ND(<0.01㎎/ℓ) - 0.06 ㎎/ℓ, 0.09㎎/ℓ - 1.33㎎/ℓ respectively. The range of phosphate level varied from ND(<0. 01㎎/ℓ) -0.24㎎/ℓ, and total phosphorus was fluctuated 0.04㎎/ℓ - 0.63㎎/ℓ. Algal growth potentials of the filtered and filtered after autoclaved samples were 0.1 ㎎/ℓ - 21.0㎎/ℓ and 2.9㎎/ℓ - 13.9㎎/ℓ respectively during surveyed period. AGP of the filtered after autoclaved were higer than those of the filtered only except some specific sites. The points of maximum growth were measured after addition of N, P, Fe and EDTA each in comparison with unenriched (control) samples. Phosphate appeared to be the major limiting element in AGP test for a tested organism throuhgout the year, especially during spring and summer. According to trophic level by Sudo(1980), it was estimated that Tong-Bok stream was eutrophic, Nae-Puk stream was oligo-mesotrophic, and all other streams of Lake Tong-Bok were mesotropic.
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