주암호의 식물플랑크톤의 출현과 동태

최민규,김백호,정연태,위인선 ( Min Kyu Choi,Baik Ho Kim,Yeun Tai Chung,In Sun Wui ) 한국하천호수학회 1994 생태와 환경 Vol.27 No.1

A short-term survey was carried out to understand the species composition and standing biomass of phytoplankton in Lake Chuam, where severe the eutrophication have took place on summer, 1992. Totally 130 taxa of phytoplankton were collected and consisted of 6 classes, 10 orders, 7 suborders, 23 families, 55genera, 116 species, 13 varieties and 1 forma. Phytoplankton compositions in each class were divided in 57 taxa of Chlorophyceae (43.8%), 44 taxa of Bacillariophyceae (33.9%), 20 taxa of Cyanophyceae (15.4%), 6 taxa of Euglenophyceae (4.6%), 2 taxa of Dinophyceae and 1 taxa of Chrysophyceae. The composition of species and standing biomass was reached to maximum, 72.31% and 42.67% at Site 3, respectively. Dominant species were Microcystis aeruginosa (51.65%), Melosira granulata (4.96%). The next major phytoplankton except these two species were ceratium hirundinella, Eudorina elegans, Anabaena flos-aquae, Dictyosphaerium pulchellum, Coelastrum microporum, Coelasphaerium kuetzingianum, and staurastrum paradoxum var. longipes. These groups were 73.1% of total biomass. And also, species diversity was high at Site 3 throughout the sampling times. Coelastrum-Coelasphaerium-Eudorina-Staurastrum assemblages were much distributed in centering of Site 3, the upper part of lake, inflowed sufficient nutrient from many tributaries. Especially, the high frequency (2.7% of totals) of Staurastrum paradoxum var. longipes was very interesting and new to Korea. In physicochemical factors, suspended solids, electric conductivity and chlorophyll a were reached the maximum, 34.5mg/l, 103μhmos/Cm, 6.7mg/m^3 only at Site 3 in June, closely associated with green algal assemblages. But other data were not showed any relationship between biological and physical conditions of phytoplankton community. The above mentioned results indicate that Lake Chuam has a wide range from eutrophic to oligotrophic state according to Hutchinson(1967), and divided into two regions, Site 1,2 and Site 3 in a view of phytoplankton distribution and biomass and its environmental condition. We conclude that Site 3 was in situation of considerable organic pollution.

변산반도 (邊山半島) 국립공원의 식물플랑크톤의 계절적 변화에 대하여

정연태,김백호,최문규,위인선 ( Yeun Tai Chung,Baik Ho Kim,Min Kyu Choi,In Sun Wui ) 한국하천호수학회 1991 생태와 환경 Vol.24 No.4

A survey of phytoplankton community was carried out seasonally from July, 1990 to April, 1991 at Pyonsanbando National Park, Chollabuk-do, Korea. The authors collected 143 taxa consisting of 5 phylum, 12 orders, 4 suborders, 53 genera, 117 species, 24 varieties and 2 form. During this study, dominant species were Scenedesmus quadricauda and Cosmarium furcatospermum. Dominance indices were ranged from 0.19∼0.57, Shannon-Wiener`s species diversity index (H`) and Similarity index were 0.77∼2.52 and 0.13∼0.58, respectively. And also, some species- Microctstis aeruginosa, Ceratium hirundinella, Peridinium cinctum and Dinobryon divergens, D. cylindricum which were associated with the water bloom and eutrophication were collected.

수질오염 판정을 위한 기법 개발 (1) 부착조류 군체화에 미치는 기질특이성 연구

정연태,최민규,김백호,위인선,이종빈 ( Yeun Tai Chung,Min Kyu Choi,Baik Ho Kim,In Sun Wui,Jong Bin Lee ) 한국환경생물학회 1996 환경생물 : 환경생물학회지 Vol.14 No.1

To elucidate the specificity of algal immigration with habitual characteristics, physicochemical factors and relative immigration activities of species were examined at four sites in the two branchs; Kosan and Soyang streams of the Mankyeong River system during autumn in 1995. The content of ash-free dry matter (AFDM) and chlorophyll-a(chl.a) were highly dependent with current, and were more high in control group than those of any other group. In artificial substrate groups, they were decreased following surface-coarsity of substrates(CT>SG>CT). One hundred seven taxa were classified, and bacillariophyceae and chlorophyceae in number of species were 82 percentage. In algal biomass, bacillariophyceae were totally 87%, Achnanthes minutissima, Cocconeis placentula, Cyclotella meneghiniana, Melosira varians, Navicula cryptocephala, Nitzschia palea, Gomphonema parvulum, Synedra ulna and Fragilaria construens were dominated. Others, Cosmarium furcatospermum, Ankistrodesmus falcatus and Golenkinia radiata in chlorophyceae and Oscillatoria terebriformis in cyanophyceae were also occurred. In the relative immigration activities(RIAs), G. parvulum was high as 10.3%, closed to 7.0% in two Monoraphid and one Gentries such as A. minutissima, C. placentula and Cyclotella meneghiniana, and below 1.6%, Synedra ulna and Fragilaria construens in Araphids. In general, RIAs of control groups were similar with those of AFDM and chl. a. And the values of RIAs in experimental groups were increased with ascending of surfacecoarsity of substrate (CT>SG>ST). On the other hand, some of them were independent with substrates. Durng incubations, periphytic algal succession were not evident, but abundant diatom were maintained. However, later there were some immigrations in non-diatomic algae such as Cosmarium furcatospermum, Scenedesmus quadricauda and Merismopedia glauca. Therefore, although there were some problems that overestimated or evaluated the relative saprobity to different water system using only current velocity and surface-coarsity of substrate, we conclude that the relative immigration activities of species were to play a role as a indications in comparing of different water system.

만경강 하계의 담수조류군집에 대한 생태학적 연구

정연태,최민규,김백호,위인선 ( Yeun Tai Chung,Min Kyu Choi,Baik Ho Kim,In Sun Wui ) 한국하천호수학회 1992 생태와 환경 Vol.25 No.4

Mankyeong River system is the main stream of Chollabuk-do province, flowing across Chonju and Iri-City in the western district of Korea. The authors were investigated the freshwater algal community and its several environmental factors on summer, 1991. The environmental factors were air temperature(23.0-34.0˚C ), water temperature(22. 6-28.5˚C), pH(6.72-8.07,), dissolved oxygen (0.67-7.9mg/l), biological oxygen demand (0.82-18.27mg/l), salinity (0-0.5%) and electric conductivity(59-950 umohs/cm), respectively. The freshwater algae 214 taxa were classified and composed of 5 classes, 11 orders, 5 suborders, 22 families, 7 subfamilies, 68 genera, 181 species, 27 varities and 8 forma, and totally, 2.938 ×10^7cells/l were counted. In classification and relative abundances, 97 taxa(45.33%) of Chlorophyceae and 1.918×10^7cells/l (65.2%) of Bacillariophyceae were maximal, respectively. Totally, Synedra ulna is the dominant species, other main species are Melosira varians, Nitzschia palea, Cymbella tumida during this study. Biotic indices were dominances(0.192-0.403), H`values(0.78-2.23), eveners(0.46-1.39), similarities (0.135-0.536), pollution indices (1.2-2.4), pollution tolerance scores (0-4 degree). From above results, it suggests that the saprobity of the mankyung river and its tributaries were ranged from β-mesosaprobic to polysaprobic. And also, Synedra ulna was common species and 6 taxa including Cymbella tumida, Nitzschia palea and Melosira varians were regarded as the pollution indicators.

Fine Structure of Blue-green Algae, Microcystis aeruginosa Kutzing

최민규,김백호,문연자,정연태,이종빈,위인선,Choi, Min-Kyu,Kim, Baik-Ho,Mun, Yeun-Ja,Chung, Yeun-Tai,Lee, Jong-Bin,Wui, In-Sun Korean Society of Electron Microscopy 1996 Applied microscopy Vol.26 No.4

In order to understand the morphological differences between two different organic loadings by its upstream, and to compare with other algal groups with references, the fine structure of blue-green algae, Microcystis aeruginosa Kitzing, taken from two branches, Tongbok and Bosung stream of Lake Chuam, Korea pennisula was examined. It showed extinct differences in most physicochemical factors between both branches, except water temperature and pH values. The concentrations of total phosphorus in Tongbok branch were twice as those of Bosung. M. aeruginosa cells were enumerated totally $1.2X10^4cells/ml$ and these individuals in branch of Tongbok were close to two times as much as Bosung. In light and electron microscopy, natural M. aeruginosa colonies formed irregular shape and non-directional array in amorphous matrix. They were consisted of many kinds of cells, youngs or olds in cell division, solitary, and various size of cells. Each cell ranged from 2.61 to $5.40{\mu}m$ in diameter, and averaged as $3.54{\pm}0.19{\mu}m$. In cytoplasm, they contained a number of inclusions in various size, shape and appearances. Among them, polyhedral bodies or carboxysomes, a structured granules, photosynthetic lamellae or thylakoids, and gas vacuoles were prominent and easy to recognize. Although it was failed to find the definable morphological variations in the ultrastructure of M. aeruginosa in terms of algal habitual environments, some useful characters were founded, outer layer of cell wall, polyhedral bodies and gas vacuoles, in blue-green algal classification and taxonomy. 주암호의 유입하천중 이화학적 조건이 서로 다른 보성천과 동복천에서 채집된 남조 Microcystis aeruginosa Kutzing의 미세구조에 대한 형태학적 관찰을 시행하여 다음과 같은 결과를 얻었다. 수온과 pH를 제외한 다른 환경요인들은 두지점간에 큰 차이를 보였다. M. aeruginosa의 광학 및 전자현미경적 관찰 결과, 세포는 부정형 군체를 형성하며, 투명한 점액질로 싸여 있었다. 세포는 난형 또는 구형에 가깝고, 크기는 $2.61{\sim}5.40{\mu}m$의 범위로서, 평균 $3.54{\pm}0.19{\mu}m$였다. 세포질내에는 많은 다양한 구조물을 가지고 있으며, polyhedral bodies(carboxysomes), polyphosphate, cyanophycin granules 외에 photosynthetic lamellae와 gas vacuoles 등이 비교적 뚜렷하였다. 두 채집장소간의 형태학적 차이는 보이지 않았으나, 영양염류 수준이 높은 표본에서 polyphosphate와 cyanophycin granules이 숫적 증가를 보였다. 세포분열은 이분법으로 초기에 정중앙부의 좌우로부터 합입이 일어났으며, 주로 세포벽의 제1층과 제2층이 관여하였다. 세포벽의 외부층은 크게 두가지 형태의 filaments층이 잘 발달되어 있었다.

금강 및 만경강 상류의 식물플랑크톤 군집구조와 동태

김백호,최민규,정연태,이종빈,위인선,길봉섭 원광대학교 환경과학연구소 1997 環境科學硏究誌 Vol.6 No.1

덕유산 국립공원의 담수조류상

김백호,최민규,정연태,이종빈,위인선,길봉섭 원광대학교 환경과학연구소 1996 環境科學硏究誌 Vol.5 No.1

Ultrastructure of Blue-green Algae Microcystis aeruginosa Ku¨ta. in Late Chuam

Choi, Min Kyu,Kim, Baik Ho,Mun, Yeun Ja,Park, Seung Taeck,Chung, Yeun Tai,Choi, Kyu Chul,Wui, In Sun 원광대학교 환경과학연구소 1995 環境科學硏究誌 Vol.4 No.1

변산반도 국립공원의 담수조류상

최민규,김백호,정연태,이종빈,위인선 원광대학교 환경과학연구소 1994 環境科學硏究誌 Vol.3 No.1

동복호의 규조군집에 대한 생태학적 연구

최민규,김백호,정연태,이종빈,위인선 원광대학교 환경과학연구소 1993 環境科學硏究誌 Vol.2 No.1