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동복천수계에 서식하는 수서곤충의 (水棲昆蟲) 군집에 (群集) 관한 연구
조영관,백순기,김종선,나철호 ( Young Gwan Cho,Soon Ki Baik,Jong Sun Kim,Chul Ho Ra ) 한국하천호수학회 1993 생태와 환경 Vol.26 No.4
The total taxi of aquatic insects in the Tongbok stream were 78 species, 54 genera, 29 families in 8 orders. Among them, major groups were mayflies(24 species) and caddiesflies(17 species). The seasonal species number of collected specimen were similar, that is, they occurred 44 species in winter, 45 species in spring and summer respectively, and 39 species in autumn. In proportion of individuals at this surveyed stream, caddisflies were the highest(42%) and mayflies were 30%. Mostly dominant species were belonged to caddisflies and mayflies. Above all, Hydropsyche KUb and serratella rufa were dominant species. Dominant indices ranged from 0.25∼0.88. Species diversity indices showed 1.14∼4.29.
조영관,배석진,백순기,이정전 ( Young Gwan Cho,Seok Jin Bae,Soon Ki Baik,Jung Jun Lee ) 한국물환경학회 1996 한국물환경학회지 Vol.12 No.3
When wild growing plants such as Alopecurus aegualu var. amurensis were submerged in water for experiment, the conductivity and color of the water increased to a maximum 67 times that of raw water on the edged of Dongbok reservoir. In case of withered matters of Setaria viridis, the variation of color vas small, but when withered matters of Persicaria lapathafolia - which is used for dye materials - were submerged, the increasing rate of water color was very high. The variation of concentration of phosphorus and nitrogen in growing plants such as A. aegualis var, amurensis was 4∼37times and 2.5∼10times higher than that of withered plants(S. viridis and P. lapathafolia). As for treatment method. when ashes of A. aegualis var. amurensis were submerged in water, the concentration of total nitrogen(TN) and total phosphorus(TP) decreased more than that of non-treated. On the contrary, in case of withered matter of Persicaris lapathafolia, when ashes were submerged in water, the concentration of TN and TP increased more than that of the nontreated. Total nitrogen amount from the total plant biomass in the Dongbok reservoir was 12,821㎏ and total phosphorus amount was 1,141㎏. From among them, the amount of TN and TP in Persicaria lapathafolia was larger than that of any other dominant species.
저서동물을 (底棲動物) 이용한 증암천 (甑岩川) 상류 하천의 생물학적 수질평가
조영관,박병훈,백순기,김종선,나철호 ( Young Gwan Cho,Byoung Hoon Park,Soon Ki Baik,Jong Sun Kim,Chul Ho Ra ) 한국하천호수학회 1996 생태와 환경 Vol.29 No.3
The taxa of benthic macroinvertebrates in the upper region of the Cheungam stream was composed of 76 species, 61 genus, 41 families, 13 orders, 4 classes in 3 phyla. Among them, aquatic inserts containing 71 species (93%) were the major group. According to order, Ephemeroptera containing 26 species was abundant, and Trichoptera containing 19 species, Plecoptera 13 species an? Diptera 11 species were the major taxa. The seasonal species number of collected specimens was most numerous in spring (57 species) and similar in other seasons (41∼44 species). On the one-to-one propotion, Ephemeroptera were the highest (52%), and Trichoptera was 19%, Diptera 16%, Plecoptera 9%. DOminant Species were Epeorus, Cincticostella castanea, Serratella rufa and Hydropsyche belonging to Ephemeroptera and Trichoptera. Dominant indices ranged from 0.34∼1.00. Species diversity indices showed 0.00∼3.82. According to saprobic system based on the species diversity indices, water quality was evaluated to be oligosaprobic and β-mesosaprobics. The biological water quality as in biotic and pollution indices was evaluated oligosaprobic in site 1, 2 and 6 and β-mesosaprobics in site 3, 4 and 5.
황용강수계에서의 (黃龍江水系) 저서동물의 (底棲動物) 계절적 분포와 생물학적 수질평가에 관한 연구
조영관,배석진,백순기,나철호 ( Young Gwan Cho,Seok Jin Bae,Soon Ki Baik,Chul Ho Ra ) 한국하천호수학회 1996 생태와 환경 Vol.29 No.3
The benthic macroinvertebrates in the Hwangryong river occurred 51 species, 42 genera, 26 families, 10 orders, 5 classes in 3 phyla. Among them, aquatic insects containing 44 species were the major group comparing 84.6% of the whole. In particular, a great many Ephemeroptera containing 17 species occurred and Megaloptera were found only in 2 species. Also, there were 4 species of Trichoptera. The comparison of species at each site revealed the largest number of 29 species at site 2 and 3 respectivly, and the smallest was 18 species at site 1. The seasonal number of collected species were similar, as followers; 30 species occurred in winter, 25 species in spring, 28 species in summer, and 22 species in autumn. On comparing individual numbers in this survey, Ephemeroptera were the highest (50%) and Trichoptera were 37%. The most dominant species belonged to Trichoptera and Ephemeroptera. Above all, Uracanthella rufa and Cheumatopsyche brevilineata were dominant. Dominant indices ranged from 0.46 to 0.94. Species diversity indices ranged from 1.04 to 3.00. According to the saprobic system based on the species diversity indices of benthic macroinvertebrates, water quality was β-mesosaprobic in each site. The biological water quality as biotic indices was evaluated from α- to β-mesosaprobic, the pollution indices evaluated β-mesosaprobics, the simple water quality evaluation revealed secondary water quality criteria and the GPI evaluated ranged from oligosaprobics to β-mesosaprobics. The biological water quality evaluation by these indices proved similar to the results of chemical analysis.
조영관(Young Gwan Cho),이대행(Dae Haeng Lee),명화봉(Hwa Bong Myung),박병훈(Byung Hoon Park),곽명규(Myung Gyu Gwak) 한국수처리학회 2001 한국수처리학회지 Vol.9 No.3
N/A The safety of water quality at several water treatment plant(WTP) in Gwang-ju was investigated when the backwashing water was reused. Concentrations of turbidity, E. coli, NH₃-N, metals in recycled water of Y-WTP were generally low under the standard limit of drinking water. However, turbidity and color of the backwashing water at N-WTP were so high that affected to the water treatment process as coagulation/sedimentation and also increased the amount of sludge in sedimentation basin. When the ratio of recycled water to raw water was increased, much alum was needed and residual turbidity in effluent of sedimentation was also increased. 15% NaCl solution was used to chase the stream characteristics of processes at N-WTP. A drift of one side was occurred because the flow rate of streams and the amount of effluents were different at two sedimentation basins.
정진,조영관,고창옥,김운중,Jeong, Jin,Cho, Young-Gwan,Ko, Chang-Ok,Kim, Un-Jung 한국환경보건학회 2001 한국환경보건학회지 Vol.27 No.2
The algae in Dongbok reservoir consists of 6 class, 14 orders, 30 families, 63 genera, 145 species, 13 varieties, and 1 formula in 159 taxa during jan. 1995 to Dec. 1999. Species numbers according to major taxa were appeared as Chlorophyceae 80 taxa, Bacillariophyceae 28 taxa, and Cyanophyceae 17 taxa. The ratio of total standing crops were Bacillariopyceae 44%, Cyanophyceae 30%, and Chlorophyceae 225. Various species remarkably appeared during fall to early winter comparing with other seasons. Stnading crops of algae decreased from 1.1~3.7 million units/$\ell$ in 1995 to below 1.0 million n\\units/$\ell$ ever after 1996. Species number was very variable as 9~37 in down stram comparing with 12~34 in middle stream, 15~24 in upper stream. Species diversity indices were 1.1~4.0 in 1995, 1.5~3.5 in 1996~1997, 2.1~3.6 in 1998, and 0.3~3.4 in 1999. Dominant indices were 0.35~0.97 in 1995, 0.44~0.86 in 1996, 0.43~0.89 in 1997, 0.39~0.80 in 1998, and 0.45~0.97 in 1999.
지리산 (智異山) 뱀사골 강도래목 유충의 계절 및 고도에 따른 분포
나철호,조영관,김종선 ( Chul Ho Ra,Young Gwan Cho,Jong Sun Kim ) 한국하천호수학회 1991 생태와 환경 Vol.24 No.2
The seasonal and altitudinal distribution of the Plecoptera nymphs in Paemsagol valley were studied from October 1986 to August 1987. Total number of species identified was 19 species representing 17 genera in 9 families. The seasonal variation was showed 12 species on spring and winter, 10 species on autumn and 5 species on summer, respectively. Scopura laminata occurred in over the elevation of 700 m. Taenionema KUb and T. KUc are only occurred in the elevation of 1,000 m. According to the increasing altitude, the number of individuals of Taenionema KUa, Yoraperla KUa and Megarcys ochracea were increased, but Oyamia coreana and Pteronarcys saccharina were decreased. Predominantly occurring species in the number of individuals were Yoraperla KUa, Taenionema KUa, Sweltsa nikkoensis, and in biomass were Paragnetina flavotincta, Kamimuria KUa, Megarcys ochracea and Paragnetina flavotincta.