• 한국수산과학회지
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• 제48권1호
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• pp.104-115
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• 2015

This study was conducted during April-June in 2008 and 2010, following the Taean Oil Spill. We measured year-to-year changes in benthos species abundances and composition in 16 intertidal zone regions of Chungcheongnam-do. In total, 154 species were found 2008 and 134 in 2010; the mean abundance per area was $403ind./m^2$ and $242ind./m^2$, respectively. In 2008, the 10 dominant species included four species of arthropods, three species of annelids, and three species of mollusks. In 2010, dominant species included five species of annelids, three species of mollusks, one species of arthropods, and one other species. We used bray-curtis similarity to group species and found two groups in 2008 and five in 2010, complementing our NMDS analysis. Finally, we tested correlations between abiotic and biotic factors, and implemented a BIO-ENV analysis, which showed that sediment type, MZ (Phi), and organic content are important environmental factors affecting benthos in the Chung-nam tidal flats.

• 한국약용작물학회지
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• 제18권6호
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• pp.379-388
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• 2010

Adenophora racemosa is recently reported as a new Korean endemic plant species. However, the phylogenetic relationship of this genus has been controversial due to the morphological similarity and frequent morphological change of aerial parts. To verify the phylogenetic position of Adenophora racemosa and phylogenetic relationship of genus Adenophora, we analyzed the internal transcribed spacer (ITS) sequence of nuclear ribosomal DNA (nrDNA) and random amplified polymorphic DNA (RAPD) using 21 individual of 6 Adenophora species, A. verticillata, A. divaricata, A. racemosa, A. remotiflora, A. stricata and A. tetraphylla. In comparative analysis of the nrDNA-ITS sequences, we could not found not only any species specific nucleotide sequence but also could not estimated their inter or intra species. In the phylogenic analysis based on the RAPD derived DNA polymorphism, Adenophora species were classified into four groups by clustering analysis of the UPGMA. These results suggest that the DNA fingerprinting based on RAPD is more suitable than nrDNA-ITS sequence for the phylogenetic analysis of Adenophora species.

• Fisheries and Aquatic Sciences
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• 제9권3호
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• pp.101-106
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• 2006

The cytochrome c oxidase subunit I (COI) gene region of mitochondrial DNA (mtDNA) was examined in four abalone species to estimate its utility as a genetic marker using restriction fragment length polymorphism (RFLP) analysis. The utility was evaluated in terms of genetic divergence and relationships among Haliotis discus hannai, H. rufescens, H. rubra, and H. midae in both hemispheres of the world. There was clear genetic divergence in the mtDNA COI region between all pairs of the four species. Moreover, relationships among the abalone species were reflected in their geographical distributions and morphological characteristics. Therefore, RFLP analysis of the mtDNA COI region is a suitable genetic marker for the estimation of genetic divergence and relationships among abalone species. However, it is not effective for the evaluation of genetic differences within abalone species.

• The Korean Journal of Ecology
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• 제21권3호
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• pp.291-300
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• 1998

The forest vegetation of Mt. Odae based on the interspecific relationship was classified into 4 groups : Quercus mongolica, Pinus densiflora, Quercus variabilis and Patrinia saniculaefolia. Thirty-one species of Quercus mongolica group including Quercus mongolica and Acer mone, 12 species of Pinus densiflora group comprising Pinus densiflora and Spodiopogon sibiricus, 6 species of Quercus variabilis group and 4 species of Patrinia saniculaefolia were positively correlated. in the results of species ordination by principal component analysis, 7 clusters by the humidity and acidity of soil, 4 clusters by the humidity and light intensity and 7 clusters by the acidity and light intensity were formed. The plot ordination showed that the distribution of species based on the humidity, soil acidity and total organic matters was in the order of Pinus densiflora, Quercus variabilis and Quercus mongolica groups, and based on the light intensity was in the order of Quercus variabilis, Pinus densiflora and Quercus mongolica groups.

• Current Research on Agriculture and Life Sciences
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• 제24권
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• pp.37-42
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• 2006

The purpose of this study was a biota research and analysis for Close-to-nature stream restoration planning of Shinchun. The summary of this study is as follows; 1) The vascular plants in research area recorded of 45 species and insect fauna recorded of 34 species of 8 orders. As a result of table of community classification, the communities were two group; Quercus variabilis community(I), Pinus densiflora-Quercus variabilis-Quercus dentata community(II). 2) As a result of analysis on correlation of tree species, the level of significance in positive correlation between Quercus dentata and Corylus heterophyll aindicated 1% and between Pinus densiflora and Lespedeza bicolor also indicated 1%. 3) As a result of DBH analysis, it is expected that Quercus variabilis and Quercus dentata will dominateover other species in competition and its succession continuously maintains from now on in community I. In community II, it is assumed that there is a high possibility of changing into community of Quercus such as Quercus mongolica, Quercus dentata, and Quercus variabilis. 4) As a result of analysis on insect fauna, insect fauna consists of 94% of whole species as 32 species, 23 families, 8 orders. And 7 species, 7 families 4 orders was found in highly urbanized area, the vicinity of Sang-Dong bridge. 5) As mentioned above, Based on A biota fundamental research, Close-to-nature stream restoration planning were full of suggestions: i) Designating ecosystem preservation area, ii) Making Close-to-nature stream revetments, iii) Making pool-and-riffle, vi) Making decks for observation and walks for nature experience, v) Creating wetland biotope. Through these methods, it is necessary to promote bio-diversity and lead people to the space for eco-learning.

• 한국환경과학회지
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• 제16권5호
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• pp.549-559
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• 2007

Vegetation surveys were performed at 45 plots along 10 highways cut slopes in South Korea. Total floral inventory, species richness and exotic plant percentage were obtained within each plot. Life history and life form of each species appeared were analyzed. Community types were classified using hierarchical cluster analysis and detrended correspondence analysis and non-metric multidimensional scaling were conducted from vegetation matrix. 292 species of vascular plants were discovered and the number of natives and exotics were 226 and 66, respectively. There were no significant differences of species richness and exotic plant percentage between cut slopes and rest areas. Hierarchical cluster analysis indicated five clear vegetation associations in cut slopes and rest areas. Detrended correspondence analysis indicated that species composition of total and native plants were similar along the highway cut slopes whereas exotic plants were distributed differentially along the highway cut slopes. in non-metric multidimensional scaling, the studied sites were more separated from each other on the basis of their species composition than the results of detrended correspondence analysis with respect to total, native and exotic plants. The both ordination represented that exotic plants have not been made uniform yet on cut slopes and rest areas by highway corridor in spite of diverse chronosequences after highway construction termination (1 to 22 years). This study showed that the distribution of species composition in exotic plants was different and localized on cut slopes and rest areas of highway in this representative peninsula area of North East Asia and the invasion of exotic plants can retard the process of plant species homogenization.

• 한국약용작물학회지
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• 제13권1호
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• pp.30-34
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• 2005

경남지역 자생 둥글레속 수집종의 유연관계를 규명하여 품종육성을 위한 기초자료로 할용하고자 47개 수집종의 12개 형질을 대상으로 주성분 분석 및 average linkage cluster 방법으로 군을 분류한 결과는 다음과 같다. 1. 주성분 분석에서 줄기형태, 줄기색깔, 엽색, 포의 형태, 화색, 화형 등 12개 주요 형질의 주성분의 고유치에 기여율은 제3주성분까지 분석하여도 전체의 79%정도 설명할 수 있어서 47개 수집종의 분류가 가능함을 알 수 있었다. 2. 47개 수집종의 12개 주요형질을 대상으로 average linkage cluster 방법에 의한 분석치으 거리 0.7을 기준으로 군을 분류한 결과 5개군으로 분류되었다. I군은 둥굴레, II군은 용둥글레, III군은 산둥굴레 및 퉁둥굴레 특성의 중간형태를 각각 지닌 p28과 p29였으며, 제V군은 죽대로 분류되었다. 3. 경남일대 둥굴레의 특성조사와 수집종 분류결과 둥굴레와 죽대는 종간 변이가 거의 없었던 반면, 용둥굴레, 퉁둥굴레와 산둥굴레는 다양한 변이종이 분포하고 있는 것으로 나타났다.

• 한국환경과학회지
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• 제20권4호
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• pp.427-434
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• 2011

This study characterized the full range of vegetation in a upland wetland (marshland) in Korea. Classified community types were used to describe vegetation at the marshland and adjacent areas. The communities contained 44 species of vascular plants and all species were identified into four plant community types. The Rhododendron yedoense f. poukhanense type and Lespedeza cyrtobotrya type had a high representation infacultative upland species (FU) and obligate upland species (OU), respectively. The monocot type was dominant in marshland by Miscanthuns saccharifloruc and contained 14 species. Together the three areas contained four species, with the strongest indicator species being Ranunculus acris var. nipponicus, Rhododendron yedoense f. poukhanense, Hemerocallis fulva, and Miscanthuns sinensis var. purpurascens. Shannon-Weaver index of diversity also varied among the community types (F = 18.9, df = 2), with the types FU having significantly higher value (3.467) than the others (1.125 for type FW and 1.239 for type OU).

• 수산해양기술연구
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• 제50권4호
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• pp.530-541
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• 2014

The dredge gear is dragged along the bottom of the sea to catch targeted edible bottom dwelling species. Species composition and ecological index of the catches of dredge were estimated around Gangneung coastal fishing ground by dredge with different mesh size and tooth space from July to December 2013. Eight different types of dredge including four different tooth space (24.7 mm, 29.9 mm, 34.9 mm, 40.1 mm) and four different mesh size(15.5 mm, 32.7 mm, 51.1 mm, 60.0 mm) were used in the experiment. During the experiment, total catches were collected 31 species as sipunculida 1 species, mollusca 13 species, annelida 3 species, arthropoda 8 species, echinodermata 4 species and others 2 species. The dominant genus were mollusca and echinodermata while the dominant species were Megangulus venulosus, Pseudocardium sachalinensis, Schaphechinus brevis. The richness index was ranged 1.29-1.72, evenness index was 0.6-0.65 and diversity index was 1.65-1.83 according to the tooth space and mesh size of dredge. Richness index, diversity index were high at tooth space 34.9 mm dredge and ecological index showed decreasing tendency with the increasing of mesh size of dredge. Cluster and MDS analysis, based on a Bray-Curtis and similarity matrix of fourth root transformed data of number of species and wet weight, showed division into four different groups as four different tooth space (Group A), four different mesh size Group B (51.1 mm, 60.0 mm), Group C (32.7 mm) and Group D (15.5 mm).

• 한국버섯학회지
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• 제12권3호
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• pp.154-162
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• 2014

Oyster mushrooms including of P. ostreatus, P. eryngii, P. pulmonarius and P. cornucopiae are one of the famous mushrooms for foods in Korea. RAPD were carried out using 14 of oligoprimers to analyze the phylogenetic relationship among 57 strains of 32 Pleurotus species. Most of species formed the minimum clade with strains within species and was divided respectively species. Therefore clade was separated well in accordance species. Pleurotus species formed again clade to be added in close related to other species, and were discriminated by sixteen clades with each representative species including high similarity groups. Sixteen clades were composed representative species according to each clade. There were clade I of P. pulmonarius(P. sajor-caju, P. opuntiae, P. sapidus), clade II of P. eryngii(P. fuscus var. ferulae, P. fossulatus), clade III of P. ostreatus(P. ostreatus var. columbinus, P. spodoleucus, P. floridanus), clade IV of P. florida, clade V of P. djamor(P. flabellatus, P. incarnates, P. salmoneo-stramineus), clade VII of P. populinus(P. subareolatus), clade VIII of P. cystidiosus(P. cystidiosus var. formosensis), clade X of P. dryinus(P. dryinus var. pometi), clade XIV of P. cornucopiae(P. citrinopilieatus, P. euosmus), and clade XV of P. australis. These species were representative species each clades. Five species, P. ulmarius(clade VI), P. griseus(clade IX), P. calyptratus(clade XI), P. lampas(clade XII), P. smithii(clade XIII)and P. serotinus (clade XVI) were used each one strain in analysis, so they were clustered other groups.