• 한국산림과학회지
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• 제96권3호
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• pp.245-250
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• 2007

본 연구는 충북 진천의 활엽수림 지역에서 임도의 개설이 소형 설치류에 대한 영향을 파악하기 위해 실시되었다. 임도의 개설로 인해 하층식생의 피도량 증가, 상층 임관의 감소, 소경목의 증가와 같은 서식지의 변화가 발생하였다. 소형 설치류에 대한 포획 결과 두 지역에서 모두 흰넓적다리붉은쥐와 등줄쥐가 포획되었다. 흰넓적다리붉은쥐는 개설지에 비해 미개설지에서 행동권의 크기가 컸으며 포획된 개체수가 적었다. 등줄쥐는 포획 개체수와 평균 체중이 미개설지에 비해 개설지에서 모두 높은 것으로 나타났다. 또한 개설지의 임도 주변에서 많은 개체수의 소형 설치류가 포획된 반면, 미개설지에서는 전 지역에 걸쳐 비교적 고른 분포를 보였다. 임도의 개설은 그 지역에 서식하고 있는 소형 설치류의 개체수, 종 구성 및 서식지 이용 유형에 큰 영향을 미치는 것으로 판단된다.

• 한국어류학회지
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• 제9권2호
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• pp.235-243
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• 1997

광양만 어류의 종조성과 계절변동을 파악하기 위하여 1990년 2월부터 12월까지 5개 정점에서 격월로 소형 저인망을 이용하여 어류를 채집하였다. 조사기간 동안 총 32과(科) 54종(種), 9,497개체, 65,838.2g이 채집되었다. 주둥치(Leiognathus nuchalis)가 총 개체수의 64.9%를 차지하였으며, 주둥치와 전어(Konosirus punctatus)가 각각 총 생물량의 28.8%와 22.3%를 차지하였다. 수온이 낮은 2월에는 출현종수와 개체수, 생물량이 모두 연중 가장 낮은 수준을 보였다. 수온이 $12^{\circ}C$ 이상을 보이는 시기에는 20종 이상이 출현하였다. 개체수는 10월에, 생물량은 4월에 가장 높았다 광양만에서 어류군집의 구조는 주둥치와 전어의 출현량 변화에 따라 계절 변동을 보였다.

• 생태와환경
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• 제49권1호
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• pp.62-66
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• 2016

이 연구의 목적은 전남 광양시 일대 백운산에 서식하는 나방의 고도 및 계절에 따른 다양성을 알아보는 것이다. 2014년 9월과 10월 그리고 2015년 4월부터 10월까지 겨울을 제외한 기간 동안 자외선등 트랩을 사용하여 총 9회 조사를 실시하였다. 그 결과 나비목 15과 288종 1,444개체가 채집, 확인되었다. 출현한 종 수는 자나방과가 97종 740개체, 밤나방과가 62종 193개체, Erebidae가 52종 177개체, 재주나방과가 16종 111개체 등으로 나타났다. 고도별로는 고도가 높아질수록 종 다양성이 줄어드는 양상을 나타냈으며 계절별로는 6월과 8월에 종 수 및 개체수가 최대값을 나타내는 M-자형 양상을 나타내었다. 기존에 조사된 문헌과 비교한 결과 197종이 새로이 추가되어 백운산의 나방상은 총 20과 449종으로 보고한다. 이 조사에서 확인된 종수 및 기존의 자료를 이용한 기대종수는 Chao 2 예상치의 경우 1,530종으로 나타나 종 다양성이 높은 지역으로 확인 되었으며 추후 이 지역에 대한 종합적이고 지속적인 연구가 지속되어야 할 것으로 생각한다.

• 한국수정란이식학회지
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• 제20권3호
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• pp.217-232
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• 2005

The objective of this study was to determine the response of QTL in each generation during selection to develop inbred lines. The simulation program was written in Fortran. Magnitude of QTL effects, base population size, number of QTL assigned to population, and the allelic frequency for the positive allele at each major QTL were highly associated with number of generations to fixation of QTLs during selection. Populations with larger QTL effects and larger base population size had more individuals with fixed QTL. However, a smaller number of QTL assigned to population had a higher fraction of individuals with fixed QTL at each generation compared with more populations with QTL. This simulation study will help to design biological experiments for detection of QTL-marker association using inbred population and to determine optimum number of lines with fixed QTL during inbred line development. To complement this study, additional simulation should be need with abundant replicates, more various population sizes, magnitude of QTL effects, and recombination between markers and QTLs.

• The Korean Journal of Ecology
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• 제17권4호
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• pp.453-461
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• 1994

Size class structure and vegetative growth of a perennial herb of the temperate deciduous forests, Symplocarpus renifolius Schott, were studied from 1991 to 1994 in Namhansansung, Kyonggi Province, Korea. The size class structures of leaf number and leaf area per individual followed bell-shape curve, i.e. frequency of middle class was relatively high. The leaf area increased from the late-March to mid-May. At the end of the growing season, leaf area(length X breadth) was proportional to biomass, especially aboveground biomass. The leaf number and leaf area per individual increased at the rate of 0.08 leaf/year and 9.7 $cm^2/year$, respectively. The size of the individuals in large-sized classes, in leaf number and leaf area, decreased in next year, while the size of the individuals in small-sized classes increased. Therefore, it was concluded that the size class structure of S. renifolius population was largely determined by the growth form.

• 한국환경과학회지
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• 제27권11호
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• pp.1007-1021
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• 2018

Community dynamics of benthic macroinvertebrates and biological evaluation of water quality were investigated at Gigyecheon of Pohang and Gyeongju, Korea. The survey was carried out at 8 sites from May to October, 2017. As a result, total of 104 species under 54 families, 15 orders, 8 classes in 4 phyla with 5,052 individuals were revealed. The number of species was the most abundantly identified in aquatic insects, 76 species under 34 families, 6 orders. Among them, the order Odonata was the most abundant taxon as 21 species(20.2%). The most abundant individuals were collected in the phylum Mollusca as 1,453 individuals(28.8%). Various species appeared dominantly at each site by season, and the most dominant species was Caridina denticulata denticulata belonging to the class Malacostraca with 0.08 of dominance index. According to the results of community structure analyses, the diversity and richness indices were the highest at site II, the evenness index was the highest at site I, and the dominance index was the highest at site IV. The number of species and individuals of gathering collectors were the highest among functional feeding groups. Those of sprawlers were the highest among habitat orientation groups. The ESB showed a tendency to change according to season and site, and it was the highest in May at most surveyed sites. The KSI was also somewhat fluctuated according to season and site. From these indices, average biological water quality was evaluated as class II.

• 한국패류학회지
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• 제29권3호
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• pp.163-169
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• 2013

In the present study, the seven primers BION-33, BION-34, BION-37, BION-41, BION-44, BION-45 and BION-42 generated the total number of loci, average number of loci per lane and specific loci in Hongseong, Yeosu and Goheung population of F. mutica, respectively. 7 primers generated 19 specific loci in the Hongseong population, 29.3 in the Yeosu population and 23.1 in the Goheung population, respectively. Especially, the decamer primer BION-37 generated 7 unique loci to each population, which were identifying each population, approximately 700 bp in Hongseong population. In this study, the dendrogram obtained by the seven primers indicates three genetic clusters: cluster 1 (HONGSEONG 01-HONGSEONG 07), cluster 2 (YEOSU 08-YEOSU 14) and cluster 3 (GOHEUNG 15-GOHEUNG 21). Among the twenty one cockles, the shortest genetic distance that displayed significant molecular differences was between individuals 17 and 19 from the Goheung population (genetic distance = 0.051), while the longest genetic distance among the twenty-one cockle individuals that displayed significant molecular differences was between individuals HONGSEONG no. 03 and YEOSU no. 12 (genetic distance = 0.616). Relatively, individuals of YEOSU population were fairly closely related to that of GOHEUNG population. Ultimately, PCR fragments revealed of in this study may be useful as a DNA marker the three geographic populations to distinguish.

• 한국수산과학회지
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• 제51권3호
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• pp.278-285
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• 2018

Monthly variation in species composition of fishes in the eelgrass bed of Jangpyeong in Tongyeong, Korea was determined using monthly samples from a seine net from May 2016 to April 2017. A total of 32 species, 2,042 individuals and 3,991.1 g of fishes were collected during the study period. The dominant species were Takifugu niphobles, Rudarius ercodes, Gymnogobius heptacanthus, Zoarchias glaber, Pholis nebulosi and Leucopsarion petersii. These species accounted for 79.5% of the total number of individuals. The fish assemblages in the eelgrass bed showed clear seasonal changes: the number of fish species increased in March and was highest in October, while the number of individuals increased in December and was highest in July.

• 수산해양기술연구
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• 제48권3호
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• pp.284-292
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• 2012

Species composition and abundance of larval fishes in the coastal waters off Gori in the southeastern Korea were investigated from January to December in 2006. During the study period, 32 larvae species belonging to 20 families were collected. The dominant species were Engraulis japonicius, Hexagrammos agrammus, Sillago japonicus, Acropoma japonicum, Apogon lineatus, and Konosirus punctatus. These six species accounted for 87.0% of the total number of individuals collected. The number of species, number of individuals, and species diversity indices fluctuated by season. The peak numbers of species and individuals occurred in July and May, respectively. Correlation analysis showed that monthly variations in water temperature and salinity could act as an indicators of seasonal variations in the larval fish community structure and abundance of the dominant species; in particular, the abundance of S. japonicus, A. japonicum, and A. lineatus were significantly corrected with the water temperature.

• 대한치과교정학회지
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• 제14권1호
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• pp.115-125
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• 1984

A comparative study was undertaken to investigate the collapse of maxillary dental arch and palate in unilateral cleft lip and palate individuals. The material for this study consisted of 39 subjects with repaired unilateral cleft lip and palate (30 males, 9 females). The measurements of unilateral cleft lip and palate individuals were compared with the measurements of normal individuals (30 males, 30 females). All the subjects were in the mixed dentition stage and the mean age was almost the same. The following conclusions were obtained. 1. A large number of the maxillary dental arch of the unilateral cleft lip and palate individuals showed ${\Omega}$-shape, and the arch length was shorter than that of normal individuals. The intermolar width did not show significant difference between cleft group and group, but the intercanine width was mcuh smaller than that of normal individuals. 2. The palate of the unilateral cleft lip and palate subjects showed shorter and shallower form than that of normal subjects. 3. The palatal area of the unilateral cleft lip and palate subjects was smaller than that of normal subjects, and the cleft side area was much smaller than the opposing side area. 4. There was no significant sexual difference in measurements of maxillary dental arch and palate of the unilateral cleft lip and palate subjects.