• 한국환경생태학회:학술대회논문집
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• 한국환경생태학회 2006년도 임시총회 및 학술논문발표회
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• pp.97-97
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• 2006

• 생태와환경
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• 제42권1호
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• pp.48-57
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• 2009

Primary production of epiphytic and planktonic algae in a shallow reed zone of a lagoon Nishinoko was investigated. Concentrations of nutrients varied widely horizontally and locally in the lagoon. It seems that the reed zone has a heterogeneous environment. The photosynthetic rates of epiphytic and planktonic algae were 7 to 14 mg C surface stem $m^{-2}hr^{-1}$ and 12 to $46mg\;Cm^{-3}hr^{-1}$, respectively. The areal primary production of epiphytic algae was estimated as 4 to $13mg\;Cm^{-2}hr^{-1}$ from the stem density of Phragmites and the water depth at each station. The production of phytoplankton, on the other hand, was 5 to $56mg\;Cm^{-2}hr^{-1}$. The contribution of epiphytic algae to total primary production averaged 53%, although the assimilation number was much lower than that of phytoplankton. The present results indicate that the epiphytic algae are one of the significant primary producers in the reed zone.

• Journal of Ecology and Environment
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• 제37권4호
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• pp.341-350
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• 2014

In this study, aquatic and aerial algae were collected in various environments in Hongcheon-river of Gangwan-do between December 2011 and June 2012, with the aim of adding newly described genera and species to the Korean flora. As a result, five genera and eight species were recorded for the first time in Korea. These newly recorded genera and species were Cylindrocapsa geminella, Leptosira mediciana, Pseudendoclonium basiliense var. brandii, Stichococcus minor, S. deasonii, Eustigmatos polyphem, Nephrodiella lunaris, and Xanthonema exile. The eight taxa identified in this study mostly corresponded to their reported morphological characteristics. However, some differences from previous published descriptions were found; N. lunaria, reported to be an aquatic species in a previous study, was found to be an aerial algae inhabiting on rocks and mosses. Cylindrocapsa geminella was found to transform into attached or planktonic algae depending on the environmental condition, and the cell wall was found to be changed. Likewise, E. polyphem was seen to change cell-shape or chloroplast color according to the environment.

• ALGAE
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• 제31권2호
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• pp.137-154
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• 2016

Next generation sequencing (NGS) technologies have revolutionized many areas of biological research due to the sharp reduction in costs that has led to the generation of massive amounts of sequence information. Analysis of large genome data sets is however still a challenging task because it often requires significant computer resources and knowledge of bioinformatics. Here, we provide a guide for an uninitiated who wish to analyze high-throughput NGS data. We focus specifically on the analysis of organelle genome and metagenome data and describe the current bioinformatic pipelines suited for this purpose.

• ALGAE
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• 제17권4호
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• pp.203-216
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• 2002

• Journal of Ecology and Environment
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• 제36권4호
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• pp.421-437
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• 2013

A study on Chlorococcal algae was carried out at 33 stations (ponds, swamps, reservoirs, lakes and rivers) from May 2009 to January 2013. The families Hydrodictyaceae and Coelastraceae of order Chlorococcales were investigated, including 5 genera, 29 species, and 17 varieties. Among them, 8 taxa were newly recorded for Korea; 1) Family Hydrodictyaceae: Pediastrum asymmetricum, P. boryanum var. campanulatum, 2) Family Coelastraceae : Actinastrum aciculare, A. hantzschii var. subtile, Coelastrum indicum, C. microporum var. octaedricum, C. morus, C. pulchrum.

• Journal of Ecology and Environment
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• 제36권4호
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• pp.327-338
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• 2013

A study on Chlorococcal algae was carried out at 21 stations (ponds, swamps, reservoirs, lakes and rivers) from May 2011 to January 2012. The families of Botryococcaceae and Characiaceae of Chlorococcales were investigated to the extent of 8 genera, 20 species. Among them, 10 taxa are newly recorded in algal flora of Korea by Kim and Kim (2012) and this study reviewed about ; 1) Family Botryococcaceae: Dictyosphaerium elegans, D. reniforme, D. simplex, D. elongatum, 2) Family Characiaceae: Characium conicum, Ankyra ancora, A. judayi, A. calcarifera, Schroederia spiralis, S. indica.

• 한국임상수의학회지
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• 제14권2호
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• pp.349-351
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• 1997

7세의 홀스타인 암소에서 엽록소가 없는 Prototheca에 의한 만성적인 진행성 유방 염의 발생에 대해 보고한다. 유방염 우유로 만든 습윤표본에서 명확한 세포벽과 내생포자를 갖고 있는 구형 내지 난원형의 병원체가 직접 관찰되었고, Sabouraud배지에서의 순수배양물 에 대해 Wright염색 및 PHOL염색을 했을 때 algae가 증명되었으며, nutrient배지에서 세균 이 중식하지 않아서 Prototheca가 유방염의 원인으로 제시되었다. 이 병원체는 자연상태에서 는 사물기생성이지만 감염원은 확실하지 않았다. algae와 진균의 형태학적인 연구를 하는데 있어서 PHOL염색액을 광범위하게 응용할 수 있음을 제시하였다. Prototheca의 ecology와 병원성을 규명하기 위해 더 많은 연구가 이루어져야 될 것으로 생각된다.

• 한국환경생태학회지
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• 제28권1호
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• pp.10-23
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• 2014

한국 동해안 삼척시 갈남 해역의 조간대와 조하대에 생육하는 해조류의 군집구조 변화와 무절산호조류의 분포현황을 2010년 8월부터 2011년 5월까지 계절별로 총 4회 조사하였다. 연구기간에 녹조류 14종, 갈조류 33종, 홍조류 65종이 출현하여 총 112종 채집 및 동정되었다. 이 중 29종은 일 년 내내 출현하였다. 생물량을 근거로 한 우점종은 구멍갈파래(Ulva pertusa), 불레기말류(Colpomenia spp.), 모자반(Sargassum fulvellum), 톳(Sargassum fusiforme), 몽당잎모자반(Sargassum muticum), 지충이(Sargassum thunbergii), 작은구슬산호말(Corallina pilulifera)과 우뭇가사리(Gelidium elegans)였다. 해조류의 연평균 생물량은 건중량으로 66.7 $gm^{-2}$ 이었고, 여름에 107.5 $gm^{-2}$로 최대였고 가을에 36.2 $gm^{-2}$로 최소값을 기록하였다. 기능형군 분석에서는 성긴분기형(coarsely branched form)이 전체 해조에서 40.0~48.6%를 차지하였다. 엽상형(sheet form), 사상형(filamentous form) 및 성긴분기형을 포함한 기회종인 생태학적 상태그룹 ESG II는 46~61종으로서 76.7~82.4%를 차지하였다. 각상형의 무절산호조류는 모든 계절에 출현하였으며, 대표적인 종이 혹쩍(Lithothamnion lemoineae), 혹돌잎(Lithophyllum okamurai), 납작돌잎(Lithophyllum yessoense), 나팔가시돌잎(Hydrolithon gardineri)이었다. 동해안 갈남 해역에서 무절산호조류의 피도는 선행 연구에서 36.8%였으나, 금번에 11%로서 감소하고 있음을 확인하였다.

• ALGAE
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• 제22권2호
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• pp.95-106
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• 2007

Blooms of Chattonella species are normally during summer in inland seas with high nutrients from the land and inflowing water. These blooms cause mass fish kills worldwide. We isolated a Chattonella strain from the south coast of Korea and identified it as C. antiqua. It is known that the morphological changes of phytoplankton correspond to the diurnal vertical migrations that follow an intrinsic biological clock and a nutrient acquisition mechanism during the day and night. In electron micrographs, C. antiqua clearly showed a radial distribution of lipid bodies in subcellular regions and plastids composed in which thylakoid layers were perpendicular to the surface. A single pyrenoid was present in each plastid and it was found at the end of the plastid towards the center of the cell. Throughout the day, plastids of C. antiqua cells appeared as an expanded net-like recticulum. During the night, however, the plastids changed their shape and contracted toward the cell periphery. The electron density of pyrenoids was increased in cells harvested during the night.