• 제목/요약/키워드: Endemics

검색결과 30건 처리시간 0.051초

한국산 둥굴레속(Polygonatum, Ruscaceae)의 분류학적 재검토 (A taxonomic review of Korean Polygonatum (Ruscaceae))

  • 장창기
    • 식물분류학회지
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    • 제32권4호
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    • pp.417-447
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    • 2002
  • 한국산 둥굴레속 식물을 분류학적으로 재검토하였으며, 2절, 3계열하에 14종, 2변종의 모두 16분류군으로 재정리하였다. 이 중 한국 특산종은 선둥굴레와 늦둥굴레 2종이었으며, 한국 미기록종인 풍도둥굴레(P. odoratum var. odoratum)와 종둥굴레(P. acuminatifolium)의 자생지를 확인하였다. 정확한 종동정을 위해 절, 계열, 종의 검색표와 각 분류군의 기재문을 제시하였다.

Main Regularities of Eco-geographical Differentiation in Endemic Element of the Russian Far East Flora

  • Kozhevnikov, Andrey Evhenjevicz
    • 식물분류학회지
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    • 제37권4호
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    • pp.363-386
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    • 2007
  • Endemic element of the Russian Far East (RFE) flora includes 497 species of 150 genera and 46 families. The level of endemism in structure of regional natural flora reaches 11.1% as a whole, and in structure of its native fraction - 13.1%. As a result of chorologic and ecocenotic analysis of RFE flora endemic element it is revealed that it consists of 8 main geographical groups and 7 main floristic complexes. The largest number of endemic species is concentrated in Arctic - Alpine & Montane (140, 28.2%), Forest (107, 21.5%) and Maritime (88, 17.7%) floristic complexes as well as in Russian Far East - West-Pacific (136, 27.4%), Japan Sea (88, 17.7%) and North-East-Asian - Beringian (69, 13.9%) geographical groups. It's possible to distinguish three main areas with similar eco-geographical differentiation of endemics on RFE as follows: (1) North-East Asia sector of RFE which North-East-Asian - Beringian and Maritime Okhotia - Beringian geographical groups approximately correspond to, (2) Continental part of East Asia sector of RFE (West - Okhotian, Amur - Okhotian, Amur - Ussirian, Okhotsk Sea and Japan Sea groups) and (3) Oceanic part of East Asia sector (Russian Far East - West Pacific group). Taxonomical variety of RFE endemics on these territories makes up accordingly (1) - 99 species (19.9%), (2) - 259 (52.8%) and (3) - 136 (27.4%).

한국산 부추속(Allium, Alliaceae)의 분류학적 재검토 (A taxonomic review of Korean Allium (Alliaceae))

  • 최혁재;장창기;고성철;오병운
    • 식물분류학회지
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    • 제34권2호
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    • pp.119-152
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    • 2004
  • 한국산 부추속 식물을 분류학적으로 재검토하였으며, 3아속, 10절, 17종, 3변종으로 정리하였다. 이 중 한국 특산종은 돌부추(A. koreanum), 한라부추(A. taquetii), 세모부추(A. deltoide-fistulosum), 선부추(A. linearifolium), 세모산부추(A. thunbergii var. deltoides), 등 근산부추(A. thunbergii var. teretifolium) 등의 6분류군이었으며, 노랑부추(A. condensatum), 가는산부추(A. splendens), 산파(A. maximowiczii) 등은 북한에만 분포하는 것으로 밝혀졌다. 정확한 종 동정을 위해 아속, 절, 종 및 종하분류군에 대한 검색표와 각 분류군의 기재문을 제시하였다.

Biogeography of marine bivalve mollusks of eastern Korea

  • Lutaenko, Konstantin A.;Noseworthy, Ronald G.
    • 한국패류학회지
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    • 제30권3호
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    • pp.281-293
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    • 2014
  • The biogeography and diversity patterns of the marine bivalve molluscan fauna of the East Sea coast of South Korea are analyzed. The total species richness of the continental Korean bivalve fauna, excluding insular regions (Dok-do and Ullung-do), is 304, and from north to south the species richness of bivalves increases showing a clear gradient: Gangwon, 143 species ${\rightarrow}$ Gyeongbuk, 131 ${\rightarrow}$ Gyeongnam, 183. A zonal-geographical analysis of the entire fauna shows that the great majority are warm-water mollusks, constituting 77% (subtropical, 37%, tropical-subtropical, 30%, subtropical-boreal, 10%), The number of boreal (low-boreal, widely distributed boreal and circumboreal) species is lower, 19%, whereas boreal-arctic mollusks have only 4%. This demonstrates that the bivalve molluscan fauna of the eastern coast of Korea is subtropical, and has more affinities to the fauna of the East China Sea than to the northern East Sea. Separate analysis by provinces shows the increasing role of warm-water mollusks from north to south. While tropical-subtropical and subtropical species constitute 47% (68 species) in Gangwon, their dominance increases to 71% (93 species) in Gyeongbuk, and to 80% (148 species) in Gyeongnam. The Gyeongnam bivalve fauna is the most diverse in species composition and has the largest number of "endemics" (species known only from this province), 46%. The Gangwon fauna also contains many "endemics", up to 40%, while Gyeongbuk is an intermediate zone with low "endemicity", only at one-fifth of the regional fauna, and has the most species in common among the three provinces.

Evolution of avian infectious bronchitis virus: Genetic drift and recombination

  • Lee, Chang-Won
    • 한국동물위생학회지
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    • 제25권1호
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    • pp.97-103
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    • 2002
  • Infectious bronchitis(IB) is a viral disease in which continued evolution of the virus is of paramount importance for annual endemics and epidemics in chickens. Since the isolation of IB viruses(IBVs) in the 1930s, over 50 serotypes or variants have been reported worldwide. Continuing evolution is most prominent in the suface glycoproteins of IBV but also occurs in other parts of the genome. This genetic variability results from accumulation of molecular changes that can occur by a number of different mechanisms including genetic drift (point mutations) and genetic shift(RNA recombination). GA98 is a new serotype of IBV identified recently in the United States. In this paper, the evolutionary trend of IBV will be discussed using GA98 serotype as a model.

한국산 양볼낙과 어류의 분류 및 4 미기록종 (Taxonomic Revision of the Scorpionfishes (Pisces: Scorpaenidae) with four New Records from Korea)

  • Kim, Ik-Soo;Lee, Wan-Ok
    • 한국동물학회지
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    • 제36권4호
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    • pp.452-475
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    • 1993
  • The taxonomic revision of the family Scorpaenidae was conducted based on the specimens collected from the coasts of the Korean Peninsula from 1989 to 1992. The scorpionfishes of Korea are composed of 30 species in 8 genera, and the keys to species and genera are provided with svnonvms and their distributions. Four species newly reported from Korea are redescribed and figured: Sebastiscus tenius (Barsukov et Chen), Sebastes steindachneri Hilgendorf, S. minor Barsukov and S. zonatus Chen et Barsukov. It is noted that the genus Sebastes comprise 18 species in Korean waters without endemics. Most species of the Korean scorrionfishes are shared with Japanese and Taiwanese faunas including temperate and tropical scorpionfishes. Most Sebastes species are recognized as temperate elements but other genera of this family are regarded as tropical elements.

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Ulleung-do earthworms - Dagelet Island revisited

  • Blakemore, Robert J.
    • Journal of Species Research
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    • 제2권1호
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    • pp.55-68
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    • 2013
  • Previous surveys on Ulleung-do (Dagelet Isl.) found just ten earthworm taxa while the current survey unearthed a dozen species. Placement of parthenogenetic 'tube' Amynthas dageletensis Hong & Kim, 2005 is resolved as it clearly belongs in synonymy of Metaphire soulensis (Kobayashi, 1938) which becomes a new Ulleung-do record. Other new megascolecids are recorded since Amynthas heteropodus (Goto & Hatai, 1898) and A. baemsagolensis Hong & James, 2001 are confirmed as synonyms of A. corticis (Kinberg, 1867) and A. carnosus (Goto & Hatai, 1899), respectively. The latter taxon is differentiated and its synonym A. pingi (Stephenson, 1925) provisionally revived. New lumbricids are Bimastos parvus (Eisen, 1874), Eisenia japonica (Michaelsen, 1892) and questionably Dendrodrilus rubidus (Savigny, 1826). All confirmed species are common exotics with no endemics. Drawida moniligastrids were not yet located on this remote island for reasons unknown.

Fish Assemblage Dynamics and Community Analysis in the Han River

  • Choi, Jun-Kil
    • Animal Systematics, Evolution and Diversity
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    • 제26권2호
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    • pp.105-114
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    • 2010
  • A study of Han River fish assemblage dynamics for 4 years was conducted. From April 2005 to August, 2008, fishes inhabiting two sites of Han River were sampled for identification. For further analysis, 40 individuals of the dominant species were sampled monthly from March 2006 to November 2008. The fish assemblage at site 1 was dominated by Zacco platypus (32.69%), while the subdominant species were Acheilognathus yamatsutae (14.4%), Acanthorhodeus gracilis (9.43%), Squalidus japonicus coreanus (6.84%), and Tridentiger brevispinis (5.18%). The most abundant species at site 2 was Korean Chub (Zacco koreanus) with relative abundance of 62.45% and followed by Pungtungia herzi (10.29%), Coreoperca herzi (8.67%), and Coreoleuciscus splendidus (6.82%) as the subdominant species. At both sites, the endemics populations show an increasing pattern during the whole survey period, while the natives were declining in the last two years.

A new Korean red algal species, Haraldiophyllum udoensis sp. nov. (Delesseriaceae, Rhodophyta)

  • Kim, Myung-Sook;Kang, Jeong-Chan
    • ALGAE
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    • 제26권3호
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    • pp.211-219
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    • 2011
  • The genus Haraldiophyllum comprises seven species worldwide. Six of these are endemics with limited distributions, whereas the type species H. bonnemaisonii has been reported from the Atlantic Ocean. In Korea, H. bonnemaisonii has been previously recorded from the southern coast. During a red algal collection at Udo, Jeju Island, Korea, we found a potentially undescribed Haraldiophyllum species and analyzed its morphology and rbcL sequences. Herein we describe a new species, H. udoensis sp. nov., and compare our Udo specimen to similar congeners. This new species is characterized by one or several elliptical blades on a short cylindrical stipe with fibrous roots, blades that are monostromatic except at the base and on reproductive structures, a lack of network and microscopic veins, entire margins, lack of proliferations, growth through many marginal initials, and two distinct tetrasporangia layers. A phylogenetic rbcL sequence analysis demonstrated H. udoensis was distinct from the United Kingdom's H. bonnemaisonii, as well as from other species. Morphological and sequence data indicated a previous misidentification of H. udoensis as the type species H. bonnemaisonii. Based on maximum likelihood analysis, Myriogramme formed a sister clade with H. udoensis, with relatively low bootstrap support.

거제도의 관속식물상과 주요 식생 현황 (The Flora of Vascular Plants and Vegetation Status of Geojedo)

  • 지성진;김윤영;고은미;양종철;장창기;오병운
    • 한국자원식물학회지
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    • 제19권1호
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    • pp.29-44
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    • 2006
  • The flora of vascular plants in Geojedo revealed to be 550 taxa based on only the voucher specimens to be collected. It comprise 108 families, 341 genera, 478 species, 69 varieties and 3 forms respectively. Among them, 13 taxa of Korean endemics and 8 taxa of rare and endangered plants were investigated in addition to 75 taxa of specially designated plants announced by the Ministry of Environment. Furthermore, 36 taxa of induced and naturalized plants were also observed in this area. One of the characteristics of forest vegetation is the broadly occupation of Pinus thunbergii on whole area of Geojedo. Although it's well condition and conservation status, the destruction area of vegetation was rapidly increasing by the industrial development, the deforestation and the tramp as well as by the basic disturbances of human beings. Therefore, more active and positive conservation strategy such as expansion of conservation area should be prepared rapidly by the results of long-term monitoring studies.