• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 2001.11a
• /
• pp.201-205
• /
• 2001

설악산 국립공원지역 산간계류의 17지점에서 2000년 6월부터 2001년 6월까지 어류상 및 이화학적 요인 분석을 실시하였다. 모든 조사지점은 1-3차 이내의 하천으로 비교적 물리ㆍ화학적 교란이 적었으며 하천폭은 5～30 m 정도였다. 채집된 어류는 총 17과 42종 2,557개체였고, Cyprinidae는 16종 2,165개체가 채집되어 84.7%의 상대풍부도를 나타냈으며, Cobitidae는 5종으로 Cyprinidae 다음으로 가장 많은 종이 채집되었으나 개체수는 109개체로 4.2%의 상대풍부도를 보였다. Gobiidae가 4종 (5.0%), Salmonidae는 모두 3종 (0.8%)이 채집되었다. 이외에도 Oryziatidae, Plecoglossidae, Amblycipitidae, Cottidae, Serranidae 등 12과는 각각 1종씩 모두 117개체 (4.6%)가 채집되었다. Cyprinidae는 전체 채집종의 37.2%를 나타냈다. 우점종은 Zacco temmincki로 10개 지점에서 738개체가 채집되어 28.9%의 상대풍부도를 나타냈으며, 아우점종은 Moroco kumtangensis와 Z.platypus로 각각 4개 지점 648개체 (25.3%)와 7개 지점 344개체 (13.5%)로 나타났다. 한국고유종 (Korean endemic species)은 모두 4과 11종 781개체로 30.5%의 상대풍부도를 나타냈으며, 고유화 빈도는 25.6%로 한국의 평균 고유화 빈도와 유사하게 나타났다 우점종은 M. kumkangensis (한국고유종 중 83.1%)로 나타났으며, 아우점종은 Coreoperca herzi (5.8%), Microphysogobio longidorsalis (3.8%)와 Coreloeuciscus splendidus (2.6%)로 나타났다. 본 조사에서 외래어는 채집되지 않았다. 어류의 다양성은 국립공원내에서보다 하천폭이 커지고 서식처자 비교적 다양한 경계지역의 하천 조사지점에서 더 높게 나타났다.따라서 국립공원의 경계지역에 대한 효율적인 생태적 관리가 요구되며, 국립공원 내의 어류의 다양성 유지와 회복을 위해서는 공원 내는 물론 경계지역 산지하천의 물리적 변형 (보, 제방, 석축 등)과 오염원의 유입 (점, 비점오염원)에 대한 고려가있어야 한다.

• Korean Journal of Environment and Ecology
• /
• v.27 no.3
• /
• pp.280-304
• /
• 2013

This study was carried out to investigate the flora of Mt. Gilsangsan (Ganghwa-Isl.). The vascular plants were collected 14 times (from March to November 2012), and were identified as 595 taxa; 122 families, 359 genera, 529 species, 7 subspecies, 51 varieties, 2 forms and 3 hybrids. The plant formation of Mt. Gisangsan is the deciduous broad-leaved and conifer mixed forest which is the common one in the middle part of Korean peninsula. All most mountain covered with young secondary forest which is mainly composed of Pinus and Quercus. The family represented by the largest number of species diversity were Asteraceae (11.%), Poaceae (10.7%), Cyperaceae (6.38%), Fabaceae (3.86%) and Rosaceae (3.52%) respectively. Korean endemic plants of this area were 12 taxa; Asarum misandrum, Clematis brachyura, Philadelphus schrenkii, Forsythia koreana, Polygonatum infundiflorum, etc. The red list of vascular plants according to IUCN valuation basis were examined, endangered species (EN) Abies koreana, Near Threatened species (NT) both Wikstroemia trichotoma and Sparganium erectum, Least Concern species (LC) Platycladus orientalis, Swertia diluta var. tosaensis and Iris minutoaurea and by Not Evaluate species (NE) Polygonatum infundiflorum. The floristic regional indicator plants found in this area were 45 taxa comprising two taxa of grade V and VI, nine taxa of grade III, three taxa of grade II, 29 taxa of gradeI. The naturalized plants were identified as 64 taxa and the percent of naturalized index (NI) was 10.7% of total 595 taxa vascular plants. Ecosystem disturbance wild plants were consisted of eight taxa; Rumex acetosella, Sicyos angulatus, Solanum carolinense, Ambrosia artemisiifolia, Ambrosia trifida, Aster pilosus, Hypochaeris radicata and Lactuca scariola. Furthermore, therophytes (26.5%), hemicryptophytes (26.0%), Geophyte (14.0%) showed high proportional ratio in life form spectrum.

• Korean Journal of Environmental Biology
• /
• v.25 no.2
• /
• pp.100-106
• /
• 2007

This study was carried out to investigate the species composition in the plastic greenhouse bed for cultivation of cucumber in June 2006. Four genera and seven species found are as follows: Aporrectodea trapezoides (Duges 1828), Aporrectodea tuberculata (Eisen 1874), Bimastos parvus (Eisen 1874), Amynthas koreanus (Kobayashi 1938), Amynthas corticis (Kinberg 1867), Amynthas hupeiensis (Michaelsen 1895), and Drawida japonica (Michaelsen 1892). Of them, Amynthas koreanus is Korean endemic species. Their descriptions are provided including photographs.

• Proceedings of the Acoustical Society of Korea Conference
• /
• 1998.06c
• /
• pp.287-290
• /
• 1998

성덕대왕 신종을 비롯한 한국범종의 독특한 특성으로 맥놀이 현상을 들 수 있는데, 이것은 한국범종의 독창적인 형상과 재질에서 기인한다. 본 논문에서는 종의 형상과 재질을 달리하였을 때 종소리의 특성이 어떻게 달라지는가를 확인하고, 이로부터 가장 좋은 소리를 내는 종의 조건을 찾아보고자 한다. 이를 위해 주석 함량, 형상, 두께가 다른 열다섯 개의 모형종에 대해서 고유 주파수의 변화와 맥놀이 현상을 알아보았다. 그리고 한국범종과 외국종과의 차이점을 알아보기 위해, 일본종과 중국종의 대표적인 형상을 갖는 모형종을 한국범종을 모델로 한 모형종과 비교해 보았다. 또한, 울림통을 종의 아래에 설치하여, 울림통의 크기와 울림통과 종의 아래에 설치하여, 울림통의 크기와 울림통과 종 사이의 거리에 따른 종소리의 변화도 분석하였다.

• Korean Journal of Ichthyology
• /
• v.34 no.3
• /
• pp.153-159
• /
• 2022

The olfactory organ of a Korean endemic species, Pseudobagrus koreanus, was investigated to describe its morphology and histology and analyze correlation between habitat environment and its ecological habits and characters, using a stereo microscope, a light microscope, and a scanning electron microscope. Its external morphology showed tubular anterior nostril at the tip of the snout and slit posterior nostril at the base of the nasal barbel. The olfactory chamber showed the rosette structure consisting of numerous lamellae radial and parallel to the medium raphe. The olfactory lamella has the sensory epithelium with olfactory receptor nuerons, supporting cells, basal cells, lymphatic cells, plasma cells and the non-sensory epithelium with stratified epithelial cells, mucous cells, lymphatic cells. In particular, 1) 41~43 (n=20) lamellae, 2) lymphatic cells and plasma cells, 3) mucous cells including neutral polysaccharid may be olfactory characteristics relevant to a stagnant or a standing habitat environment, nocturnal habit dependent on olfaction, and taxonomic characters compared at least to other catfish species.

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 2002.05a
• /
• pp.566-567
• /
• 2002

• 한국수산학회:학술대회논문집
• /
• 2005.05a
• /
• pp.99-100
• /
• 2005

• Korean Journal of Ichthyology
• /
• v.26 no.1
• /
• pp.17-24
• /
• 2014

The egg development and early life history of Acheilognathus majusculus which is Korean endemic species from Yeong river were observed under the controlled water temperature, $18.0{\pm}1.0^{\circ}C$. Fertilized eggs are opaque yellow in color and round oval shaped measuring 2.12 (2.08~2.18) mm in length and 1.86 (1.80~1.98) mm in breadth. The number of eggs averaged 72 (40~112) per an oviposition. The eggs of this species began to hatch about forty three hours after insemination and the total length of larvae was 4.23 mm mean. S form moving of larvae were not observed during larval development. The larvae reached at the heterotrophic stage about twenty-five days after hatching. It is estimated that the larvae was comming out from freshwater bivalve since that time in nature. A. majusculus was grew up to be adult stage enough which can be join to new production for three hundred days after hatching with over 67.8 mm in total length.

• Korean Journal of Environment and Ecology
• /
• v.27 no.2
• /
• pp.147-169
• /
• 2013

The vascular plants of Is. Yeonpyeongdo regions, located in Ongjin-gun, Incheon were surveyed from May to October 2010. The vascular plants collected 4 times were consisted of total 524 taxa; 90 families, 315 genera, 459 species, 4 subspecies, 53 varieties and 8 formas respectively. Among them, 2 taxa endemic species of Korea and 8 taxa of Korean rare plants were investigated in addition to 38 taxa of specially designated plants announced by the Ministry of Environment. The naturalized plants were 66 taxa, therefore naturalized ratio was 12.6% highly.

• Korean Journal of Plant Taxonomy
• /
• v.46 no.4
• /
• pp.356-360
• /
• 2016

Ixora auricularis (Rubiaceae), previously recognized as endemic to Yunnan (China), was reported in Vietnam. This plant differs from the closely related species Ixora coccinea in its auriculate shape of the base leaf, greater number of secondary veins, shorter stipules, calyx having more appendices, shorter corolla tube, and the oblanceolata shape of the corolla tip. Detailed information about its description as well as illustrations, color photographs and a species key of related species of Ixora in Vietnam are provided.