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전남 갈곡천과 인천강 하구역의 식물플랑크톤의 분포 및 현존량
이옥민,유미선,이병인,임안숙,Lee, Ok-Min,Yoo, Mi-Sun,Lee, Byung-In,Lim, An-Suk 한국조류학회(藻類) 2008 ALGAE Vol.23 No.4
Species composition, standing crop and dominant species of phytoplankton were investigated at 6 sites of Galgok stream and Incheon river which run into Gomso Bay, Jeollanam-do in April, August and November 2007. Total of 210 taxa were found which were classified as 6 classes, 12 orders, 25 families, 66 genera, 177 species, 27 varieties, 5 forms and 1 unidentified species. These river and stream had lower concentration of T-N and T-P compared to that of others; however, the site 2 of Galgok stream in summer was hypertrophic in T-P and also near hypertrophic in TN, and the site 1 in Incheon river during fall appeared to be hypertrophic in T-N, and the site 3 in summer showed near hypertrophic level in T-P. Determining the trophic status of the water quality based on chlorophyll a (chl-a), the site 3 of Galgok stream in spring and the site 3 of Incheon river in fall were oligotrophic; moreover, 6 sites including the site 2 and 3 of Galgok stream in summer were mesotrophic, and 9 sites including all sites of Galgok stream in fall turned out to be eutrophic. Particularly, the site 1 of Galgok stream in summer was hypertrophic, having 58.19 mg chl-a m$^{-3}$. There was a conspicuous difference between two values of standing crops based on chl-a and cell counting. This discrepancy may have occurred because of abundant cyanophytes and exclusion of picoplankton cells in cell counting. In the study, 5 cyanophytes, Synechocystis aquatilis, Microcystis aeruginosa, M. flos-aquae, Oscillatoria angustissima, O. limnetica and 2 diatoms, Thalassiosira bramaputrae and Navicula viridula var. rostellata were abundant. Based on the T-N, T-P values, standing crops and cell counting in Galgok stream and Incheon river were between mesotrophic and eutrophic conditions.
경기도 경안천에 설치한 메소코즘 내에서의 동물플랑크톤, 어류, 수생식물, 인공식물섬에 의한 조류저감효과 연구
송미애 ( Mi Ae Song ),공동수 ( Dong Soo Kong ),이옥민 ( Ok Min Lee ) 한국물환경학회 2013 한국물환경학회지 Vol.29 No.5
We installed mesocosms including zooplankton, fishs, artificial marshy land and aquatic macrophytes in Kyoungan stream to study the reduction effects of algae from Sep. 16 to Oct. 28, 2011. The control tendency of phytoplankton taxa was compared by analyzing community structure and dominant species in each mesocosm. Under the condition where Bluegill was absent, Daphnia similoides showed good effect of algal control since it has large food area and has high grazing pressure. Bluegill selectively preys upon large zooplankton, Daphnia similoides, as it also preys on small zooplanktons that flow in. In condition that Bluegill was absent, Daphnia similoides preyed selectively large phytoplankton (Cryptomonas ovata). Due to the shading of light, removal of nutrients and providing refuge for small zooplanktons, aquatic macrophytes and artificial marshy land showed high level of algal control. In corrals with aquatic macrophytes and artificial marshy land, the dominancy of genus Coelastrum and Pediastrum, which are difficult for small zooplanktons to feed on, relatively increased. In conclusion, under conditions of small number of predators such as Bluegill, Daphnia similoides is thought to be useful in algal bloom; however, when lots of predators are present, using small sized zooplanktons along with artificial marshy land and aquatic macrophytes is thought to be more useful than using large zooplanktons.
보문 : 충남 예당저수지를 포함한 10개 저수지의 영양단계 및 부착규조지수를 이용한 수질평가
송미애 ( Mi Ae Song ),김지원 ( Ji Won Kim ),김헌년 ( Hun Nyun Kim ),공동수 ( Dong Soo Kong ),이옥민 ( Ok Min Lee ) 한국하천호수학회(구 한국육수학회) 2011 생태와 환경 Vol.44 No.2
The research assessed water quality using physico-chemical factors, trophic status index and attached diatom index in 10 reservoirs located in Chungcheongnam-do from October 2007 to June 2008. The physico-chemical water quality assessments revealed that Dangjin-gun (St. 1~5), which displayed a high chemical oxygen demand (V and VI) and chlorophyll-α (Eutrophic-Hypereutrophic), was more polluted than Yesan and Cheongyang-gun. The sample were also hypereutrophic [trophic status index (TSI) 74.6] and β-mesosaprobic [diatom assemblage index to the organic water pollution (DAIpo) 44.47]. Yesan and Cheongyang-gun. Which were mid-level in their pollution status, were eutrophic (TSI 56.9) and α-oligosaprobic (DAIpo 60.11). TSI correlated strongly with the attached diatom index (of DAIpo 0.60-0.62, and trophic diatom index of 0.72~0.74). Hence, the attached diatom index can be used with the trophic status assessment of lakes using TSI, and lake trophic status index (LTSI).
경기도 수원시와 평택시의 5개 담수호소의 식물플랑크톤 분포 및 현존량
문병렬 ( Byeong Lyeol Moon ),남미라 ( Mi Ra Nam ),이옥민 ( Ok Min Lee ) 한국환경생물학회 2005 환경생물 : 환경생물학회지 Vol.23 No.1
경기도 수원시와 평택시에 위치한 광교저수지, 원천저수지, 서호, 남양호, 아산호 등 5개 호소에 대해 2003년 3월부터 11월까지 계절별로 4회의 채집을 실시하고, 식물플랑크톤의 분포 및 현존량을 분석하였다. 분석결과 본 수역에는 5문, 5강, 1아강, 16목, 26과, 1아과, 72속, 167종, 28변종, 1아종, 3품종의 총 199분류군의 식물플랑크톤이 분포하는 것으로 나타났다. 전체 식물플랑크톤 중 청정수역을 지표하는 분류군은 9월 광교저수지에서 Cladophora glomerata의 1분류군만이 출현하였으나. 오염수역을 지표하는 분류군은 Oscillatoria chlorina를 포함한 20분류군이 출현하였다. 또한 각각 9분류군과 4분류군의 이취미 및 독성물질을 분비하는 분류군들이 출현하였다. Chlorophyll-α 농도에 대한 Yang and Dickman이 제안한 기준에 따르면 서호, 원천저수지, 남양호, 아산호는 과부 영화 상태이며, 광교저수지는 동계에는 빈중영양 상태이고 나머지 계절은 부영양화 상태로 나타났다. The distribution and standing crop of the phytoplankton were investigated at five freshwater lakes Suwon-si and Pyongtaek-si, Gyeonggi-do from Mar. to Nov., 2003. In this investigation, 199 taxa in total were found and classified as 5 phylums 5 classes 16 orders 26 families 72 genera 167 species 1 subspecies 28 varieties and 3 forms by Engler`s classification system. The indicator species of clean water was Cladophora glomerata, which was appeared in Gwanggyo reservoir on September, 2003. Twenty taxa including Oscillatoria chlorina were identified as the indicators of water pollution, and three taxa of cyanophyte were toxic algae. In terms of Yang and Dickman`s standard of chlorophyll-α content in eutrophication of water, four lakes including Seo lake were found to be in the hypereutrophic state, and Gwanggyo reservoir was in eutrophic state except in winter.
부영양 수체(경안천)내 메소코즘에서의 생물관리를 통한 조류 제어 효과
임지혁 ( Ji Hyeok Im ),손세환 ( Se Hwan Son ),김진영 ( Jin Young Kim ),오민우 ( Min Woo Oh ),조재익 ( Jae Ick Jo ),송미애 ( Mi Ae Song ),남귀숙 ( Gui Sook Nam ),송영희 ( Young Hee Song ),장광현 ( Kwang Hyeon Chang ),이옥민 ( Ok Mi 한국물환경학회 ( 구 한국수질보전학회 ) 2012 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2012 No.-