• Korean Journal Plant Pathology
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• v.12 no.2
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• pp.162-168
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• 1996

우리 나라의 주요 고추 재배지와 미국, 대만, 호주, 아르헨티나에서 수집된 44 개 고추 더뎅이병균(Xanthomonas campestris pv. vesicatoria)균주간의 유전적변이를 genomic DNA의 restriction fragment length polymorphism(RFLP)에 의해 분석하였다. Genomic DNA RFLP profiles을 cluster 분석하여 얻은 dendrogram에서 지리적 기원이 다른 44개 균주들은 11개 RFLP 그룹으로 분류되었다. 외국 균주들은 genomic DNA의 RFLP 분석에 의해 모두 각각 다른 RFLP 그룹으로 분류되었다. 외국 균주들 중에서 미국 균주는 우리 나라 일부 균주들과 밀접한 유전적 관련성을 가지고 함께 cluster를 이루었는데, 이것은 이 균주들이 동일한 고추 더뎅이병균의 조상 균주 집단에서 유래했으리라는 것을 시사해 준다. 우리 나라 균주들은 6개의 RFLP 그룹으로 분류되었다. 대부분의 우리 나라 균주들은 가까운 cluster를 이루며 미국 균주를 제외한 외국 균주들과 뚜렷하게 구분되었다. 그러나 우리 나라 균주들 중에서 마산에서 수집된 Ms93-1은 다른 우리 나라 균주들과 뚜렷하게 구분되었다. 유전적으로 격리된 균주의 출현은 우리 나라에서 지리적 기원이 다른 고추 더뎅이병균 균주 사이에 이미 발생한 다양한 유전적 분화의 결과라고 추론된다.

• Korean journal of applied entomology
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• v.29 no.1
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• pp.25-30
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• 1990

Physiological and morphological differences in larvae and female adults of Thecodiplosis Japonensis from Haenam, Chullanamdo, and Chunsung, Kangweondo, were studied by means of electrophoretic technique and scanning electron microscope (SEM). On zymograms of whole body, third instar larvae of T. japonensis showed geographic differences in the band patterns of esterase and MDH iszymes, but patterns and the staining density of general proteins were similar in tow populations. In female adults, the populations revealed geographic differences in general proteins and esterase isozymens. In external ultrastructures, especially in genital segments, each population had distinctive structures in the 2nd segment of ovipositor.

• Korean Journal of Ecology and Environment
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• v.49 no.4
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• pp.385-392
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• 2016

Geographical isolation may lead to the populations having different ecological characteristics. Geographic isolation have been known to cause echolocation call differences in bats. In order to look at geographic differences of echolocation calls of Great Horseshoe Bats (Rhinolophus ferrumequinum), populations of inland and Jeju island habitats were examined in Korea. The study areas were some abandoned mines in the inland and caves of Jeju island, which were known as rest sites of Great Horseshoe Bats during the active season. Recording was done in two ways: Hand-held, Free-flying. Recording pulse was analyzed into five parameters: Maximum Frequency (FMAX), Minimum Frequency (FMIN), Peak Frequency (PF), Duration (D), Inter pulse Interval (IPI). Interestingly, The present study shows that the difference in echolocation between the inland and island populations. The PF of bats inhabited inland was 69 kHz. but, the PF of bats inhabited island (Jeju) was 71 kHz. There was a difference between regions. Discriminant analyses also showed clear difference between the inland and the island populations. Especially, PF of Korea population is lower than that of Europe (82 kHz) and higher than that of Japan (65 kHz).

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.05a
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• pp.615-618
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• 2001

모든 국민에 대한 기본통신의 보편적 서비스 제공 정책에 힘입어 기본통신 서비스에 대한 지역간의 격차는 상당히 해소되었으나, 정보화가 급격히 추진됨에 따라 고도 정보통신분야의 서비스에 있어서는 지역별로 편중현상을 나타내고 있다. 특히, 도서지역은 환해성과 격리성 등의 지리적 특성 및 상대적으로 낮은 인구밀도, 소득 및 통화량으로 인해 육지에 비해 가입자망 고도화가 이루어지지 않고 있다. 본 논문은 우리나라 도서지역의 통신망 구성, 운용 현황 등을 분석하고 고도 정보서비스를 경제적, 효율적으로 제공하기 위한 가입자 망 고도화 방안에 대해 검토하였다.

• Journal of the Korean Geographical Society
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• v.37 no.4
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• pp.357-370
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• 2002

Present work aims to investigate the species composition, physiognomy and distribution of arctic-alpine and alpine plants(AAP) of the Korean Peninsula. The dominance of AAP in the northern Korea may be due to the frequent exchanges of floras with circumpolar regions for the seek of the glacial refugia during the alternate Pleistocene glacial epochs. The post-glacial climatic amelioration pushed AAP back northwards and upwards, so they now shows disjunctive distribution on separate mountain tops. The diverse morphological adaptations of AAP to severe environmental conditions, viz. the dominance of perennial species, stunted tree growth, multiple protection of leaves, krummholz, and dwarf shrubs, are the result of long-term graduall development which have safeguarded the survival of AAP in a such a harsh cryo-climatic area. The appearance of the Korean endemic AAP reflects the long-term isolation of species in Korea, and the local environmental diversities which have both accentuated this isolation and aided the development of genetic diversity. Evergreen broad-leaved AAP at c. 1,500m to 1,800m and above are now endangered because of the competition from down-slope plants, and from the global warming.

• Korean Journal of Environment and Ecology
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• v.19 no.2
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• pp.177-187
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• 2005

Fish fauna of mountain streams in the Odaesan National Park area was investigated from May to October 2004. A total of 2,580 individuals were collected and classified into 26 species belonging to 9 families at the 25 sites. There were 8 Korea endemic species $(30.77\%)$, including Pseudopungtungia tenuicorpa, Silurus microdorsalis, Coreoperca herzi. Exotic species, Oncorhynchus mykiss was collected in this survey. Dominant species were Rhynchocypris kumgangensis $(37.17\%)$, and subdominant species was Rhynchocypris steindachneri$(23.02\%)$. Also Zacco platypus, Zacco temmincki, Oncorhynchus masou masou, Brachymystax lenok tsinlingensis, and Ladislavia tazanowskii were numerous. In spite of the geographical isolation by Taebaek-sanmaek, 8 species were introduced from the Han River systems to eastern water systems in Odaesan National Park.

• Korean Architects
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• no.9 s.353
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• pp.59-59
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• 1998

이 고장을 대표하는 3개의 도시 전주, 익산, 군산은 지리적 특성과 역사적 특성으로 인해 동일 문화권이지만 지켜온 현상들에서 서로 다르며 격리된 느낌의 단부소외성을 지니고 있다. 전북은 우선 완주, 익산, 고창에 이르는 백제, 마한의 평야와 해안의 문화권과 이씨왕조의 본향으로 고도의 특색을 지닌 도시문화권인 전주권, 거대한 산세를 자랑하는 지리산의 자연과 맥을 같이하는 남원권역으로 크게 대별 되어진다. 전북지방의 건축문화적 토대는 여타의 문화와 동일하게 백제의 숨결속에서 느낄 수 있다. 화려함도, 아기자기함도 없지만 있는 그대로, 한국의 정서를 압축한 듯 절박함을 바탕으로 한 백제의 문화적 속성을 지니고 있다. 한편 지나간 시절의 영화가 현재에 재현되거나 지속되고 있지는 못하나 지난 삶의 자취에서, 이곳 사람들의 인정에서 맛의 문화에서 그 깊이와 멋의 가닥을 찾을 수 있다. 현대의 도시들은 이러한 도시형성상의 문화적 지혜나 건축적 혜안을 관철하여 이루어지고 있지는 못하다. 우리의 최근의 역사들은 연약하지도, 섬세하지도 않고 오히려 일시에 옛 자취를 휩쓸어 버리는 강성을 지녀 혼이 담긴 과거의 흔적을 유지하기 쉽지 않다. 우리는 이러한 현상을 주시하였고, 옛 백제 문화의 정신을 토대로 성장하고 있는 현재의 모습들을 관찰하며 반성도 했고, 이어지고 남겨져야 할 이 고장의 특성을 헤아렸다. 마지막으로 이 고장의 미래가 발전적이기를 염원해 본다.

• Korean Journal of Ichthyology
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• v.2 no.1
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• pp.77-87
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• 1990

The development of eggs and larvae, and minute tubercles on the skin surface of the larvae in Acheilognathus lanceolatus (=Acheilognathus intermedia intermedia) from Korea were observed. The ripe eggs of A. lanceolatus from Korea were nearly spindly. The shape was distinguishable from that of Japan. And then the embryonic development of this specimen from Korea was faster than that from Japan. As regards larval development and morphology and distribution of the minute tubercles, however, A. lanceolatus in both Korea and Japan were same except for the mentioned above two characters. These findings suggested that the two formes should be separated at subspecies level.

• Animal Systematics, Evolution and Diversity
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• v.11 no.3
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• pp.359-377
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• 1995

Morphological and isozyme analyses were used to examine closely related species of Tridentiger obscurus and \ulcorner: brevispinis, a pair of cryptic species which has intricate problem with regard to species boundary, and to clarify the taxonomic position. In this study, it was revealed from their 17 allopatric streams that there are differences of band ornamentation on the lateral side and three genetic markers between two species. However, genetic relationship between them (S = 0.813, D = 0.192) was within the intraspecific level of similarity. However, at the sympatry of two species no hybrid was found except at Bangjuk stream where the electrophoretic hybrids with slight deficiency of heterozygosity were observed. It is shown that at sympatry there is a finer microenvironmental subdivision between two species at all populations including Bangjuk stream. To manifest the extent of assortative mating, four syrnpatric subpopulations at Bangjuk stream were analyzed for departure from Hardy-Weinberg equillibrium by F-statistics. All subpopulations were deviated significantly from the expectation under random mating. The evidences presented here supports the recognition of Tridentiger obscurus and T. brevispinis as semispecies in the late stage of reproductive isolation

• Animal Systematics, Evolution and Diversity
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• v.12 no.4
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• pp.331-347
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• 1996

The geographic distribution and variation for Rhinogobius brunneus were surveyed by means of allozymic and morphological analyses and it was revealed that the Korean populations of R. brunneus comprise three distinct types, Type-A, Type-B, and Type-C, which show considerable differentiation to a degree of interspecific level(Rogers' S(1972): $S_{A-B}$=0.631, $S_{A-C}$=0.628, $S_{B-C}$=0.661). In addition, no evidence of gene flow among the types was found at sympatric area and it is assumed that reproductive isolation is completed. Moreover there is microhabitat segregation according to the distance from river mouth among each types and which segregation was regarded as a factor to facilitate reproductive isolating mechanism. Therefore, based on the evidence presented above, these three types of R. brunneus are considered as typical discrete species.