• 제목/요약/키워드: RARE SPECIES

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방장산일대의 관속식물 분포 특성 (Vascular Plants of Distribution and Characteristics of the Mt. Bangjang)

  • 오현경;변무섭
    • 한국환경복원기술학회지
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    • 제9권4호
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    • pp.13-23
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    • 2006
  • The vascular plants of the studied area in the Mt. Bangjang was listed 422 taxa : 106 families, 299 genera, 372 species, 1 subspecies, 46 varieties and 3 forms. Based on the list of the rare plants by the Forest Research Institute, 5 taxa were recorded in the studied areas; Lilium distichum(Preservation priority order : No. 159), Tricyrtis dilatata (No. 97), Aristolochia contorta (No. 151), Prunus yedoensis (No. 110), Patrinia saniculaefolia (No. 122) and based on the list of Korean endemic plants, 9 taxa were recorded; Cephalotaxus koreana, Carex okamotoi, Populus tomentiglandulosa, Salix purpurea var. japonica, Prunus yedoensis, Forsythia koreana, Paulownia coreana, Weigela subsessilis, Patrinia saniculaefolia. Specific plant species by floral region were total 29 taxa; Prunus yedoensis in class V, 3 taxa(Acer palmatum, Asperula lasiantha, Lonicera subhispida ) in class III, 5 taxa(Lilium distichum, Potentilla dickinsii, Caryopteris incana, Patrinia saniculaefolia, Ligularia fischeri) in class II, 20 taxa(Ulmus parvifolia, Clematis patens, Aconitum jaluense, Ilex macropoda, Grewia biloba var. parviflora etc.) in class I. The naturalized plants in this site were 13 families, 31 genera, 36 species, 2 varieties, 38 taxa and naturalization rate was 9.0% of all 422 taxa vascular plants. Because of recent rapid increase of cars and people around here, analysis shows many naturalized plants and high naturalized ratio. And wild plants disturbing ecosystem like Ambrosia artemisiifolia var. elatior have been increasing. So, it needs continuing control and conservation measures on the plant ecosystem.

부안 계화도일대의 관속식물 분포 특성 (Characteristics by Distribution of Vascular Plants of the Gyehwado, Buan)

  • 변무섭;오현경
    • 한국환경복원기술학회지
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    • 제10권2호
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    • pp.44-53
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    • 2007
  • The vascular plants of the studied area in the Gyehwado was listed 378 taxa; 99 families, 259 genera, 322 species, 1 subspecies, 50 varieties and 5 forms. In this, Woody plants were 130 taxa (34.4%), Herbaceous plants were 248 taxa (65.6%) of all 378 taxa vascular plants. Pteridophyta were 7 families, 9 genera, 11 taxa (2.9%), Gymnospermae were 4 families, 5 genera, 9 taxa (2.4%) and Angiospermae were 88 families, 245 genera, 358 taxa (97.7%). Angiospermae in this, Monocotyledoneae were 10 families, 45 genera, 60 taxa (16.8%) and Dicotyledoneae were 78 families, 200 genera, 298 taxa (83.2%). Based on the list of the rare plants by the Forest Research Institute, recorded in the studied areas; Phacelurus latifolius (Preservation priority order; No. 194), Tricyrtis dilatata (No. 97), Aristolochia contorta (No. 151) and based on the list of Korean endemic plants, 6 taxa were recorded; Cephalotaxus koreana, Populus tomentiglandulosa, Carpinus coreana, Indigofera koreana, Forsythia koreana, Weigela subsessilis. Specific plant species by floral region were total 30 taxa; Wistaria floribunda in class IV, 5 taxa (Ligustrum ovalifolium, Callicarpa mollis, Lonicera subhispida, etc.) in class III, 24 taxa (Cephalotaxus koreana, Aristolochia contorta, Grewia biloba var. parviflora, etc.) in class I. The naturalized plants in this site were 12 families, 27 genera, 34 species, 2 varieties, 36 taxa and naturalization rate was 9.5% of all 378 taxa vascular plants.

충청북도 백운산 일대의 식물상 (The Flora of Mt. Baekwoon in Chungcheongbuk-do)

  • 유주한;진연희;장혜원;이동우;윤희빈;이귀용;이철희
    • 한국환경생태학회지
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    • 제17권3호
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    • pp.210-223
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    • 2003
  • 본 연구는 백운산의 식물상을 조사하기 위해 수행되었으며. 기간은 2000년 10월부터 2001년 8월까지 조사하였다. 충북 백운산(1,087m)의 관속식물상을 조사한 결과, 90과 273속 411종 1아종 49변종 7품종 등 총 468종류(Taxa)가 확인되었다. 그리고 본 대상지의 희귀 및 멸종위기식물을 조사한 결과 천마. 말나리, 금강제비꽃, 매미꽃. 도깨비부채, 쥐방울덩굴, 개족도리, 태백제비꽃, 미치광이풀. 토현삼 등 총 10종류로 나타났으며. 한국 특산식물은 개족도리. 가는장구채, 할미밀망, 진범, 매미꽃, 흰털괭이눈, 조팝나무, 가시딸기, 광릉갈퀴, 뽕잎피나무, 서울제비꽃, 금강제비꽃, 자란초, 토현삼, 병꽃나무, 털잔대, 고려엉겅퀴, 각시서덜취, 분취 등 19종류로 조사되었다.

DMZ 인근 학저수지 유역의 관속식물상 (Vascular Plants of Hak Reservoir Valley in Korea DMZ Area)

  • 신현탁;안종빈;김상준;허태임;권영한;이윤영;윤정원
    • 한국자원식물학회지
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    • 제28권4호
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    • pp.475-486
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    • 2015
  • This survey was conducted in order to investigate the vascular plants of Hak Reservoir Valley in the DMZ Area, Korea. The vascular plants were collected six times (from April 2014 to November 2014) and consisted a total of 238 taxa; 69 families, 172 genera, 206 species, 2 subspecies, 26 varieties and 4 forms. The observed rare plant species as designated by Korea Forest Service were 3 taxa including Carex capricornis Meinsh. ex Maxim., Acorus calamus L., Penthorum chinense Pursh. Endemic plant species were 2 taxa including Salix koriyanagi Kimura, Clematis brachyura Maxim. 17 taxa were listed as specific plant species based on phytogeographical in the investigated area. 25 taxa were recorded as naturalized plants, and their Naturalization Ratio and Urbanization Index were recorded as 10.46%, and 7.78%, respectively. Of the 238 taxa listed; 105 were pasturing plants, 92 edible plants, 76 medicinal plants, 24 ornamental plants, 6 stain plants, 4 timber plants, 2 fiber plants, 2 industrial plants and 55 unknown plants.

Distribution and synchronized massive flowering of Sasa borealis in the forests of Korean National Parks

  • Cho, Soyeon;Kim, Youngjin;Choung, Yeonsook
    • Journal of Ecology and Environment
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    • 제42권4호
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    • pp.308-316
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    • 2018
  • Background: Genus Sasa, dwarf bamboos, are considered to be species that lower biodiversity in the temperate forests of East Asia. Although they have a long interval, they, the monocarpic species, have a unique characteristic of large-scale synchronized flowering. Therefore, once they have flowered and then declined, it may be an opportunity for suppressed surrounding species. A previous study reported that Sasa borealis showed specialized flowering nationwide with a peak in 2015. However, this was based on data from a social network service and field survey at Mt. Jeombong. Therefore, we investigated S. borealis in the forests of five national parks in order to determine whether this rare synchronized flowering occurred nationwide, as well as its spatial distribution. Results: We found a total of 436 patches under the closed canopy of Quercus mongolica-dominated deciduous forests in the surveyed transects from the five national parks. Of these patches, 75% occupied a whole slope area, resulting in an enormous area. The patch area tended to be larger in the southern parks. Half (219 patches) of the patches flowered massively. Among them, 76% bloomed in 2015, which was consistent with the results of the previous report. The flowering rate varied from park to park with that of Mt. Seorak being the highest. The culms of the flowering patches were significantly taller (F = 93.640, p < 0.000) and thicker (F = 61.172, p < 0.000). Following the event, the culms of the flowering patches declined, providing a good opportunity for the suppressed plant species. The concurrent massive flowering of the mature patches was believed to be triggered by some stress such as a spring drought. Conclusion: We confirmed that the rare synchronized flowering of S. borealis occurred with a peak in 2015 nationwide. In addition, we explored that S. borealis not only monopolized an enormous area, but also dominated the floors of the late-successional Q. mongolica-dominated deciduous forests. This presents a major problem for Korean forests. As it declined simultaneously after flowering, there are both possibilities of forest regeneration or resettlement of S. borealis by massively produced seeds.

한강 수변구역의 식물상 및 식생변화에 관한 연구 (A Study on the Flora and Vegetation Changes in the Riparian Zones of Han River Watershed)

  • 이종문;조용현;김현우
    • 한국환경복원기술학회지
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    • 제22권2호
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    • pp.13-30
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    • 2019
  • The purpose of this study was to investigate changes in vegetation and flora after five years through field surveys data with the Han Gang Watershed Management Committee (2013) data in order to observe natural vegetation changes in the riparian zone of Han River watershed. As a result, the flora of the riparian zone in 2012 were listed total 231 taxa, 66 families, 158 genus, 207 species, 23 varieties, and 1 forms, and in 2017, a total 247 taxa, 74 families, 174 genus, 218 species, 27 varieties, and 2 forms were identified. The number of rare plants decreased from 4 taxa in 2012 to 2 taxa in total in 2017, and the number of endemic plants increased from 1 taxa to 3 taxa. The number of specific plants by floral region decreased from 21 taxa (9.1% of all 231 taxa of flora) in 2012 to 16 taxa (6.5% of all 247 taxa of flora) in 2017. The total number of naturalized plants is analyzed to increase from 35 taxa, a naturalization rate of 15.15% (all 231 taxa of flora) and urbanization index of 11.2% (all 312 taxa of naturalized plants) in 2012 to 44 taxa a naturalization rate of 17.8% (all 231 taxa of flora) and urbanization index of 14.1%(all 312 taxa of naturalized plants) in 2017. The ecosystem disturbance species showed an increase in both number of species and cover degree grades, indicating that the riparian zone changed in a negative direction.

漢拏山의 細胞性 粘菌 ( 1 ) - 해발 900m 이상 삼림에서의 출현과 분포 - (Cellular slime molds of mt. halla (I)-occurrence and distribution in the forests above 900m in altitude-)

  • Hong, Jeong-Soo;Kwon, Hye-Ryun;Chang, Nam-Kee
    • The Korean Journal of Ecology
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    • 제15권2호
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    • pp.181-189
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    • 1992
  • Dictyostelid cellular slime molds were quantitatibly isolated from the soils of mt.halla (above 900m in altitude), korea, according to the 'clonal isolation technique(cavender and raper, 1965a)'. Total fifteen species were found, including 1 new and 6 undescribed species.these are dictyostelium mucorodes, dictostelium minutem,polysphondylium pallidum fasciculatum, polysphondylium violaceum, dictyostelium flavidum,dictyostelium fasciculatum, polysphondylium violaceum, dictyostelium flavidum sp. n.(HL-1),dictyostelium aureo-stipes var. aureo-stipes, dictyostelium capitatum, dictyostelium giganteum,dictyostelium polycephalum,dictyostelium brefeldianum,dictyostelium macrocephalum, and dictyostelium sphaerocephalum, dictyostelium sp. (HL-2), dictyostelium sp. (CJ-9). D. mucoroides was the dominant species, and D. minutam,p.pallidum, d. fasciculatum, and p. violaceum were relatively common. d. polycephalum, d. brefeldianum, d. macrocephalum, dictyostelium sp. (HL-3), and d. sphaerocephalum were very rare. Species diversity appeared to be the highest in the deciduous broad-leaved forest from the soils of which 14 species were isolated. eight species were, including five undescribed species, isolated only from this forest soils. Number of isolates severely decrease at the forests above 1,500m in altitude.

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서귀포연안의 자리돔어장의 어류 (FISHES COLLECTED IN THE FISHING GROUND OF CHROMIS NOTATUS ALONG THE COAST OF SEOGWIPO IN JEJU-DO)

  • 백문하
    • 한국수산과학회지
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    • 제10권1호
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    • pp.49-52
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    • 1977
  • 1. 자리돔 들망에서 18과, 28속, 35종이 채집되었다. 낚이는 것과 저자망에 걸리는 것을 합하면 40종이상은 된다. 2. 어종으로서는 놀래기과 Labridae가 6종으로 가장 많았다. 3. 어획량으로서는 자리돔 Chromis natatus이 $90\%$이상이지만 줄도화돔 Apogon semilineatus과 놀래기류도 비교적 많이 어획되고 있다. 4. 자리돔 Chromis notatus은 수심 $15\~25m$ 수역에서 어획되고 있다. 5. 비식용의 관상용어종, 희귀종, 아열대성어류가 서기포연안일대에서 채집된다. 6. 다음 3종은 한국미기록종이다. Chromis analis, Franzia cheirospilos, Fugu exascurus.

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내린천의 어류상과 군집구조 (The Fish Fauna and Community Structure in the Naerin Stream)

  • 남명모;양홍준;채병수;강영훈
    • 한국어류학회지
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    • 제10권1호
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    • pp.61-66
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    • 1998
  • 1996년 6월부터 1997년 9월까지 북한강의 상류인 내린천의 어류상을 조사한 결과 10과 28속 36종 또는 아종이 확인되었다 확인된 어류 중에서 한반도 고유종은 7과 15속 16종으로 전체 출현종의 44.4%를 차지하였다 외래어종으로 Oncorhynchus mykiss가 출현하였다. 우점종은 Zacco temmincki(상대풍부도 42.94%), 아우점종은 Moroco kumgangensis(12.91%)였으며, Opsariichthys bidens, Squalidus japonicus coreanus, Misgurnus mizolepis, Leiocassis ussuriensis 그리고 Siniperca scherzeri는 1~2 개체만 채집되어 상대 풍부도가 0.03% 이하로서희소종이었다. 조사지역의 종다양성을 분석한 결과 종다양도 0.947, 균등도 0.609, 그리고 우정도 0.218로서 생태적으로 안정된 군집을 이루고 있다고 판단되었다.

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Endemic and sub-endemic water beetles of Mongolia and their distribution ranges

  • Enkhnasan, Davaadorj;Boldgiv, Bazartseren
    • Journal of Species Research
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    • 제8권4호
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    • pp.395-406
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    • 2019
  • The aim of this study was to compile a species list of endemic water beetles of Mongolia and determine their distribution patterns. A total of 1,179 individuals of endemic water beetles were collected from nine different sub-basins (123 sample points) throughout the country. Currently, 21 endemic and sub-endemic species have been recorded in Mongolia. Eight of these species were strictly endemic. The endemic and sub-endemic species were found only among four families: Dytiscidae (10 out 99 spp.), Gyrinidae (1 out 7 spp.), Helophoridae (5 out 16 spp.), and Hydraenidae (5 out 13 spp.). The rate of endemism was higher in Hydraenidae than other families (38.4%). Endemic beetle fauna was most similar between the Onon and Kherlen River Basins (80%). Helophorus parajacutus Angus, 1970 was common in five sub-basins, but Agabus kaszabi $Gu{\acute{e}}orguiev$, 1972, Gyrinus sugunurensis Nilsson, 2001 and Ochthebius mongolicus Janssens, 1967 were recorded from only one sub-basin. In terms of sub-endemic species, Mongolia was mostly similar to the fauna of Eastern Siberia, Russia (73.7%) than other neighboring regions. Due to Mongolia's vast territory and different natural zones, endemism was exceptionally low (12.4%), but these data provide baseline information of endemic and rare species for their further conservation.