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부착규조 (附着硅藻) 군집의 유기오탁 (有機汚濁) 지수 ( DAIpo ) 에 의한 금호강의 수질평가
정준,최재신,이정호 ( Jun Chung,Jae Sin Choi,Jung Ho Lee ) 한국환경생물학회 1993 환경생물 : 환경생물학회지 Vol.11 No.1
The water quality of the Kumho river severely polluted was assessed by Diatom Assemblage Index to organic water pollution (DAIpo) on June and October in 1991, February and April in 1992. Total 129 taxa consisted of 14 saproxenous taxa, 87 indifferent taxa and 28 saprophilous taxa were identified in this study. DAIpo values decreased rapidly as going to lower course of this river especially from st. 7, however, the variation of them was independant of the changes of the sampling seasons. The variation of DAIpo values was nearly the reverse tendency with Electric conductivity. The saprobic levels in each station of the Kumho river were oligosaprobic at st. 1, β-mesosaprobic from st. 2 to st. 6, α-mesosaprobic at st. 7, 8, 9 and polysaprobic at st. 10 in the whole sampling seasons.
정준,최재신,이정호 ( Jun Chung,Jae Sin Choi,Chung Ho Lee ) 한국환경생물학회 1992 환경생물 : 환경생물학회지 Vol.10 No.1
The epilithic diatoms were collected from 17 stations of the Yangsan-ch`on, a period from December in 1990 to April, August, October in 1991. The assessment of the Yangsan-ch`on was carried out by DAI_po(Diatom Assemblage Index to organic pollution). The DAI_po at each station was calculated by the relative frequency of each diatom taxon, and the water quality chart was made of the plotting by DAI_po. The river pollution index(RPI) was calculated to be 46.74 in December, 52.06 in April, 64.85 in August and 53.30 in October. The total taxa of the epilithic diatoms in this study could be classified as 14 Saprophilous taxa, 86 Indifferent taxa and 21 Saproxenous taxa.
최재신,정준,김도한 ( Jae Sin Choi,Jun Chung,Do Han Kim ) 한국하천호수학회 1993 생태와 환경 Vol.26 No.3
The water quality of the Sinchun river was assessed by Diatom Assemblage Index to organic water pollution(DAIpo) on May 29 in 1991. Total 96 taxa consisted of 14 saprophilous taxa, 61 indifferent taxa and 21 saproxenous taxa were identified in this study. Dominant species were Fragilaria vaucheriae at st.1, Gomphonema angustum at st.2, Nitzschia gracilis at st.3, Navicula pellicolosa at st.6 and Nitzschia palea at st.4, 5, 7, 8, and 9. Cymbella minuta and Synedra ulna were occurred at all stations. DAIpo values decreased rapidly as going to lower course of this river and the highest DAIpo was 79.84 at st. 1 and the lowest was 2.31 at st. 9. The variation of DAIpo was nearly the reverse tendency with electric conductivity. The saprobic levels at each station of the Sinchun river were α-oligosaprobic at st. 1, 2, 3, β-mesosaprobic at st. 4 and polysaprobic at st.5,6,7,8,9. The water quality of the Sinchun river was more severely polluted than that of 1984.
밀양강의 (密陽江) 부착규조 (附着硅藻) 군집 (群集) 분석
최재신,정준 ( Jae Sin Choi,Jun Chung ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.1
To investigate the community of the epilithic diatoms from the Milyang River, the samples were collected from ten sampling stations on March 15, June 13, September 12 and December 19 in 1991. A total of 169 diatom taxa were identified. More species appeared in the downstream of the river than in the upstream. The index of species diversity, evenness and dominance did not change with a continuous regularity by sampling season and station. The epilithic diatom community could be divided as mainly two groups by cluster analysis: the first group from station 1 to 5 was dominated by Achnanthes convergens and Fragilaria vaucheriae, the second from station 6 to 9 was dominated by Achnanthes minutissima and Nitzschia frustulum. According to degree of tolerance to organic water pollution, total 169 taxa were classified as 28 saproxenous taxa, 124 indifferent taxa and 17 saprophilous taxa.
임하호에서의 (臨河湖) 식물성플랑크톤 군집의 (群集) 생태학적 고찰
김용재,최재신,김도한,정준 ( Yong Jae Kim,Jae Sin Choi,Do Han Kim,Jung Chung ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.1
This study was investigated the ecological study of phytoplankton community from eight stations of Imha lake on May, July, September and November in 1993. Phytoplankton was identified the total 297 taxa, which was composed of 261 species, 29 varieties, 3 forma and 4 unidentified taxa. Standing crops were ranged from 6.Ox10^5unit/l at st. 1 on May to 1.4×10^7unit/l at st. 2 on July. Dominant species were Anabaena soilitaria f. planctonica, Cyclotella comta, Cyclotella meneghiniana, Cyclotella ocellata, Cyclotella stelligera and Synedra delicatissima var. angustissima. Dominant index, diversity index and evenness index were 0.068∼0.750, 0.341∼1.367, 0.183∼0.716, respectively. In relationships between community and physico-chemical factors, chlorophyll-a concentration was showed a law coefficient with the total standing crops but a high with standing crop of C. stelligera. Water temperature was a positive relations with the total standing crops. T-P was showed a low relation with the total standing crops and a negative with A. solitaria f. planctonica. T-N and conductivity were a positive with the total standing crops and standing crop of Bacillariophyceae. This lake was the oligotrophic or mesotrophic type on May but converted from mesotrophic to eutrophic type at all stations on July, September and November by comparison with phytoplankton community and physico-chemical factors.
이정호,최재신,김용재,정준 ( Jung Ho Lee,Jae Sin Choi,Yong Jae Kim,Jun Chung ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.1
The planktonic diatoms were investigated from six stations in the Naktong River estuary on May 24 in 1994. Total 104 taxa including 3 unidentified taxa were collected and classified into 91 species, 12 varieties and 1 forma belong to 34 genera. Six taxa are new to Korea: Actinocyclus normanii(Grev.) Hust. var. subsalsus(Juhl.-Dennf.) Hust., Cyclotella rossii Ha˚k., Diatoma moniliformis Ku¨tz., Nitzschia capitellata Hust., Thalassiosira weissflogii(Grun.) Fryxell & Hasle, Tropidoneis pusilla(Greg.) Cleve. Aulacoseira ambigua is a dominant species at all stations.
저서성 (底棲性) 규조류 Achnanthes alteragracillima 의 미세형태
이정호(Jung Ho Lee),최재신(Jae Sin Choi),김용재(Yang Jae Kim),정준(Jun Chung) 한국식물학회 1994 Journal of Plant Biology Vol.37 No.4
Morphology of Achnanthes alteragracillima Lange-Bert. was studied with scanning electron microscopy in epilithic samples from the Kwang River (Kwangchun). Kyungsangbuk-Do, Korea. The species was characterized by the external raphe terminal fissure deflecting up to valve margin, the internal raphe proximal endings slightly deflecting to the opposite direction each other and biased hyaline area at the valve pole. It could be distinguished from A. minutissima Ku¨tz., closely related species, in having not straight external raphe terminal fissures, and from A. convergens H.Kob. in having a biased hyaline area at the valve pole and not a convergent striae arrangement at the pole of the raphe valve.
김한도,정준,최재신 경북대학교 환경과학연구소 1988 環境科學硏究所論文集 Vol.2 No.1
The epilithic diatoms of Juam multipurpose dam area in Chonnam providence, were investigated seasonally in August, October and December, 1988. Total 111 taxa of epilithic diatoms were identified and the seasonal distribution showed 68 in August, 62 in October and 63 taxa in December, respectively. Among these taxa, 32 taxa appeared only in August, 13 taxa in October and 32 taxa in December. And 38 taxa appeared from August through December, 3 taxa from August through October and 8 taxa from October through December. Biomass of epilithic diatoms among stations and seasons were compared.