팔당호의 생태학적 연구 - 2. 식물플랑크톤의 군집 구조의 변화 -

한명수,어윤열,유재근,유광일,최영길 ( Myung Soo Han,Yun Yeol Auh,Jae Keun Ryu,Kwang Il Yoo,Yong Keel Choi ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.3

In order to examine the changes in phytoplankton community structure in Pal`tang river-reservoir system and to describe some of their interrelations, 4 stations were chosen. Observations were carried out for four times at the Pal`tang reservoir and the lower part of three rivers such as North Han river, South Han river and Kyung-An stream from April 1992 to May 1993 and these data were analyzed with other published data. A total of 60 taxa in phytoplankton: of these, 24 were Bacillariophyceae, 29 were Chlorophyceae, five were Dinophyceae, the other taxa as Chrysophyceae, Cryptophyceae were identified one species, respectively. Rapid eutrophication contribute to the shift of the chief components of the total phytoplankton community from Bacillariophyceae to Bacillariophyceae including Chlorophyceae. Among them, Autacoseira(=Melosira) granulata dominated continuously in this study area since 1980. Changes in Phytoplankton community structure in Station 4(Pal`tang reservoir) affected by the longitudinal transport along each river strech in Pal`tang river-reservoir system. However, Changes of phytoplankton community structure probably were affected by its growth characteristics during the stagnation period of water column. Station 3(Kyung-An Stream) is heavily eutrophicated due to stagnation of water column.

철원 북방 DMZ 내의 중영양호 토교저수지의 생태학적 연구 - Ⅰ. 넷트로 제작된 mesocosm 에 대한 현장 시험 -

한명수,이경,유광일 ( Myung Soo Han,Kyung Lee,Kwang Il Yoo ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.4

Exploratory analysis of field derived data from in situ aquatic net-enclosure mesocosm and control stations, and the considerations for experimental design aquatic mesocosm were investigated in Togyo Reservoir at Chulwon, Korea. Physico-chemical parameters were measured and subsamples were collected weekly from surface layer of the each station from 5 November 1994 to 15 April 1995. Changing patterns for weekly fluctuation of phytoplankton biomass and relative dominant species within net enclosure(station N) were similar to the 2 control stations(Cl and C2), although nutrient concentrations had slightly different value at each stations during the study periods. Dominant species of phytoplankton changed dramatically from a Chlorococaloid(coccoid form) in autumn to dinoflagellate, Peridinium inconspicuum in spring at all stations. It has suggested that the field test for in situ aquatic net-enclosure mesocosmis successful for the ecological risk assessment. Trophic state of Togyo Reservoir according to its physicochemical parameters, phytoplankton biomass and species composition could be regarded as mesotrophic.

팔당호의 생태학적 연구 - 1. 수질의연변화 : 과거와 현재 -

한명수,유재근,유광일,공동수 ( Myung Soo Han,Jee keun Ryu,Kwang Il Yoo,Dong Soo Kong ) 한국하천호수학회 1993 생태와 환경 Vol.26 No.2

Annual variation of water quality in Pal`tang Reservoir in Korea is described. Water samples were collected monthly from surface layer at the one station of Pal`tang reservoir, Korea from March 1988 to May 1992. Dissolved oxygen, turbidity, conductivity, pH and chlorophyll-α concentration in water column was high compared with that of 1970`s. Recently, the frequency and intensity of phytoplankton blooms(over 15㎍ chlorophyll-α1^-1) appear to be increasing. Total nitogen concentration was high compared with that of 1970`s. But, it decreased gradually from 4.76mg/l to 0.51mg/l on January 1991 as it goes. Total phosphorus concentration in water column has increased more and more from 0.004mg/l to 0.074mg/l since 1988. Therefore, N/P ratio by atoms reduced from 500 to 10∼20 because of the increasing of phosphorus and decreasing of nitrogen. This result suggests that phosphorus limited phytoplankton growth in Pal`tang Reservoir. However, if N/P ratio reduced continuously like this pattern, dominat phytoplankton species might change due to nitrogen limitation from diatom assemblages to blue green algae.

Influence of Discontinuous Layer on Plankton Community Structure and Distribution in Masan Bay, Korea

한명수,김세화,김영옥,HAN Myung-Soo,KIM Se-Wha,KIM Young-Ok The Korean Society of Fisheries and Aquatic Scienc 1991 한국수산과학회지 Vol.24 No.6

1989년 10월, 진해만에서 수괴의 물리화학적 요인과 관련된 플랑크톤의 미세분포와 군집구조를 micro-scale 관측을 통하여 분석하였다. 부도수도 내측에는 비교적 온난, 저염의 성층화된 수괴(stratified waters)가 존재하였으며, 풍부한 클로로필양과 영양염류가 관찰되었다. 식물플랑크톤의 생물량과 영양염류는 부도수도의 내측과 외측에서 현저한 변화를 보였다 외만성 혹은 해양성의 식물플랑크톤(Chaetoceros decipiens, Rhizosolenia stolterforthii, Rhizosolenia styliformis, and Ceratium trichoceros)과 동물플랑크톤(Sagitta enflata, Oncaea venusta and Oikopluera longicaudata)은 부도수도 외측의 혼합된 수괴(mixed water)에서만 관찰되었다. 이는 부도수도해역의 정점 3과 4사이에서 염분과 영양염류의 구배에 따른 불연속층(discontinuous layer)이 존재하고 있음을 암시하며, 이 불연속층이 플랑크톤 군집분포에 중요한 영향을 미치는 것으로 생각된다. 부도수도 내측에서는 클로로필양이 $80{\mu}g/l$ 이상인 식물플랑크톤 Patchs가 관찰되었다. 이와 같은 식물플랑크톤 bloom시, 높은 동화율에 의한 silicate 고갈은 이 지역에서의 식물플랑크톤 bloom 소멸의 원인으로 추정된다. The community structure and micro-scale distribution of plankton in relation to hydrography were investigated in Masan Bay, Korea in October 1989. Warmer and less saline waters with stratification was located in the inner part of the Pudo Strait, and chlorophyll-a and nutrients were higher. Both phytoplankton biomass and nutrients was changed dramatically around the Strait. Offshore/oceanic species in phytoplankton i.e., Chaetoceres decipiens, Rhizosolenia stolterforthii, Rhizosolenia styliformis and Ceratium trichoceros and zooplankton i.e., Sagitta enflata, Oncaea uenusta and Oikopluera longicaudata occurred mainly in well mixed waters of the outer part. This suggests that discontinuous layer seems to play an important role as an approximate border for the plankton population. This layer was located between Station 3 and Station 4 near the Pudo Strait, since the layer consisted of a series of micro-scale discontinuties of salinity and dissolved inorganic nutrients gradient. Phytoplankton patchs of more than 801e1 were found only in the inner part of the bay. Depletion of silicate caused by a rapid assimilation of phytoplankton in the inner part of the bay seemed to be responsible for the decline of blooms.

유연격자를 함유한 방향족 폴리에스테르아미드의 유변학적성질에 대한 고찰

한명수,이영철,정인재 ( Myung Soo Han,Young Chul Lee,In Jae Chung ) 한국화학공학회 1991 추계학술발표논문집 Vol.- No.-

한강 하류의 남조류 및 환경요인의 연간 (2000 ${\sim}$ 2003) 변화에 대하여

서미연,김백호,배경석,한명수,Suh, Mi-Yeon,Kim, Baik-Ho,Bae, Kyung-Seok,Han, Myung-Soo 한국하천호수학회 2005 생태와 환경 Vol.38 No.2

한강 중하류의 남조류 및 환경요인의 연간변화 (2000 ${\sim}$ 2003)를 파악하기 위하여, 2000년 4월부터 2003년 10월까지 4년간 성수대교에서 성산대교까지 총 5개 지점을 선정하여, 수계의 기초환경요인 및 식물플랑크톤 현존량 변화를 조사하였다. 조사기간 동안, 남조류의 현존량은 점차적으로 감소하여 장기간 강우가 가장 많았던 2003년에는 거의 관찰되지 않았으며, 총 식물플랑크톤 현존량에 대한 남조류의 기여도는 약 10%범위내였다. 이러한 현상은 매년 강우집중기 동안 팔당댐으로부터 많은 방류수가 유입됨으로서 수온감소는 물론 광량감소, 영양염류 희석 등에 의한 남조류의 성장이 제한된 것으로판단되며, 동일시기에 다른 조류 (녹조, 규조 등)의 높은 성장으로 엽록소 a와 식물플랑크톤 현존량이 뚜렷하게 증가하였다. 따라서 한강 하류의 고온기 동안 남조류 성장은 잦은 강우와 방류에 의해 제한을 받지만 규조나 녹조와 같은 다른 조류들의 높은 성장으로 대치되는 천이현상을 보였으며, 기후영향을 크게 받는 전형적인 하천생태계의 특성을 나타냈다. For 4 years (2000 ${\sim}$ 2003), annual fluctuations of standing crops of cyanobacteria and physicochemical factors were examined at five sites from Bridge of Seungsoo to Bridge of Seungsan in the lower part of Han River. The cyanobacterial abundance (ND to 4,167 cells $mL^{-1}$) was strongly decreased during the heavy rains in every year. During the similar periods in 2003, cyanobacteria hardly observed, and comprised below of 10 percentage of total phytoplankton. In the period of little cyanobacteria, some green algae and diatom dominated the phytoplankton community, while the concentration of chlorophyll a has not largely change. These results indicate that heavy frequent precipitation strongly limited the growth of cyanobacteria, and lead an algal succession by the appearance of new algal groups.

인간의 자유와 그리스도인 교육의 실천 행위로서의 비평적 성찰

한명수 ( Myung Soo Han ) 대구가톨릭대학교 인문과학연구소 2003 인문과학연구 Vol.4 No.-

프랑스 제5 공화국 정치체제의 특성과 역사적 인과성에 관한 연구

한명수(Myung Soo Han) 한국유럽학회 2004 유럽연구 Vol.20 No.-

팔당호의 생태학적 연구 4 . 경안천 하류의 영양염 및 입자태 유기물 거동과 식물플랑크톤의 천이

한명수(Myung Soo Han),홍성수(Sung Su Hong),어윤열(Yun Yeol Auh) 한국하천호수학회 2002 생태와 환경 Vol.35 No.1

In order to understand the relationship between succession of phytoplankton community structure and inorganic nutrients and particulate organic matters, a one station in Kyungan stream in Korea during the dry season was chosen. Water samplings were carried out once a week from 18 August to 13 November 1993. The DIN concentration distributed always abundantly, however, phosphate and silicate gradually reduced during the period. Phytoplankton community had a peak chlorophyll a concentration of 90.6㎍/ℓ in late summer(21 August 1993) and a second peak of 29.7㎍/ℓ in autumn(2 October 1993). After then late autumn was characterized by relatively low chlorophyll a concentration of 15∼16㎍/ℓ. Seasonal fluctuation of chlorophyll a concentrations were correlated with measured POC and PON concentrations: phytoplankton blooming may be a major factor controlling POC and PON concentrations in this ecosystem. Phosphate plays an most important role as a limiting factor of phytoplankton growth. However, when Si/P ratio low, silicate may be a more critical limiting factor than phosphate. Shifts of P-limitation to Si-limitation the succession of dominant phytoplankton can in duce: diatom to cyanobacteria such as Anabaena, Microcytis and Oscillatoria.

정치적 유럽 건설과정에 관한 연구

한명수(Myung Soo Han) 한국유럽학회 1997 유럽연구 Vol.5 No.-