• 식물분류학회지
• /
• 제47권1호
• /
• pp.1-5
• /
• 2017

The population status of Hydrangea luteovenosa Koidz. in Korea was investigated, with an emphasis on its genetic diversity. From field surveys, we obtained the only locality record for a wild population in Jeju Island, which contained 285 individuals in total. Genotyping was performed using five microsatellite markers for the all extant plants in Korea. Three Japanese populations were also genotyped for the comparative analyses. The genotyping result showed that the Jeju population consisted of only two multilocus genotypes, including identical heterozygous genotypes at two loci; it had been maintained mostly by vegetative reproduction; and although the Jeju population is geographically far from Japanese populations, all alleles observed in the Korean population were shared with Japanese populations, suggesting the possibility that H. luteovenosa in the Jeju Island had been recently migrated or introduced from Japan. Future ecological and genetic studies associated with negative effects of low genetic variation will be essential for determining the conservation direction of the threatened Korean population of this species.

• 한국수산과학회지
• /
• 제56권3호
• /
• pp.309-314
• /
• 2023

Shark populations are constantly decreasing owing to environmental destruction and overfishing; thus, sharks are now at risk of extinction, with 30.5% of species classified as endangered on the International Union for Conservation of Nature's Red List. Sharks are apex predators and keystone species in balancing the marine food chain; their extinction would create an imbalance in the entire marine ecosystem. Assisted reproductive technology is a last resort for protecting animals facing extinction. Here, as a proactive effort toward building a hormone-induced artificial insemination protocol for endangered wild sharks, we identified the possibility of germ cell maturation by administration of GnRH, a commercially produced synthetic salmon gonadotropin-releasing hormone, and calculated its optimum dosage and injection timing. The experiment was conducted on one shark species, Chiloscyllium plagiosum. Injections were administered in 24 h intervals to C. plagiosum females, and 0.2 mL/kg+0.2 mL/kg were the optimal doses. These doses effectively induced maturation and, and ovulation, and oocyte release. Our results confirm that GnRH is a suitable tool for shark hormone-induced artificial insemination and indicate that this method may facilitate the conservation of endangered shark species.

• 한국환경과학회지
• /
• 제6권1호
• /
• pp.89-94
• /
• 1997

The flora of Mt. Kum.lung(80 lm) was Investigated to compare the flora of Mt. Hwang-Ryung, Mt. Cheon-Hwang, Mt. Chulseo. The vascular plants, collected from March 1995 to Oct., 1996, were consisted of a total 564 taxa: 103 families, 312 genera, 493 species, 1 subspecies. 66 varieties and 4 forms. The Korean endemic plants of this area were 11 taxa, the alplan and endangered plants were 29 taxa, the special wild plants designatlrlg by Enoronmental Agency were 2 taxa and the alpian plants were 18 taxa. Because many plants, being necessary to conserve, are distributed Kumjung, but if development is indespensable. destruction of natural ecosystem must be minimized.

• 한국어류학회지
• /
• 제21권sup1호
• /
• pp.29-37
• /
• 2009

The tiny fragment of freshwater body is providing home for huge biodiversity and resources for the existence of human. The competing demand for freshwater have been increased rapidly and it caused the declination of biodiversity in recent decades. Unlike the natural process of extinction in gradual progress, the current species extinction is accelerated by human activity. As a result many fish species are already extinct or alive only in captivity in the world and about fifty eight animal species are in endangered in Korea including eighteen freshwater species. Conservation of biodiversity is the process by which the prevention of loss or damage is attained, and is often associated with management of the natural environment. The practical action is classified into in-situ, or ex-situ depending on the location of the conservation effort. Recovery means the process by which the status of endangerment is improved to persist in the wild by re-introduction of species from ex-situ conservation population into nature or translocation of some population. However there are a lot of restrictions to complete it and successful results are known very rare in case. In this article the authors explore some strategies for conservation and restoration of freshwater fish species conducted in Korea for few years. The major causes are discussed in relation with the decline of freshwater fish diversity during few decades and some strategies are evaluated to advance the process of conservation. A study on the Korean bullhead, Pseudobagrus brevicorpus, is introduced as a case for ex-situ conservation and restoration in freshwater ecosystem.

• 식물분류학회지
• /
• 제36권4호
• /
• pp.335-360
• /
• 2006

표본에 근거하여 한반도 야생란 88분류군에 대한 분포를 조사하고, 각 분류군의 분포도를 작성하였다. 한반도내 8개 식물 분포 아구에 분포하는 야생란의 분류군 수는 다음과 같았다; 갑산아구 27분류군, 관북아구 21분류군, 관서아구 13분류군, 중부아구 37분류군, 남부아구 39분류군, 남해안아구 33분류군, 제주도아구 64분류군, 울릉도아구 19분류군. 한반도 야생란의 72.7%가 제주도에 자라는데, 이 중 18분류군은 한반도에서는 제주도에만 분포한다. 한반도 야생란 중 30분류군은 상록활엽수림대에 자라며, 16분류군은 북부지역이나 고산에 분포하는 북방계 요소였다. 분포 조사를 기초로, 한반도 야생란을 국내에서 변형한 IUCN 적색 목록 범주에 따라 분류하였다. 절멸종(EX) 또는 야생에서의 절멸종(EW)에 속하는 난초과 식물은 한반도에서는 발견되지 않았다. 위급종(CR)에 속하는 분류군은 Cymbidium kanran(한란), C. lancifolium(죽백란), C. ensifolium(소란), Cypripedium japonicum(광릉요강꽃), Cyrtosia septentrionalis(으름난초), Dendrobium moniliforme(석곡), Habenaria chejuensis(제주방울란), H. radiata(해오라비난초), Neofinetia falcata(풍란), Sedirea japonica(나도풍란) 10분류군이었는데, 이 중 소란과 제주방울란은 이번 연구에서 처음으로 CR 범주로 기록되었다. 한편, 위기종(EN)으로 분류된 것은 22분류군으로, 이 중 Gastrochilus japonicum(탐라난), G. fuscopunctatus(금자란), Gastrodia verrucosa(한라천마), Habenaria flagellifera(방울난초), Herminium lanceum var. longicrure(씨눈난초), Chamaegastrodia sikokiana(애기천마), Lecanorchis kiusiana(제주무엽란), Neottia hypocastanoptica(한라새둥지란), Tipularia japonica(비비추난초)가 이번 연구에서 최초로 EN 범주에 포함되었다.

• 한국자원식물학회:학술대회논문집
• /
• 한국자원식물학회 2019년도 추계학술대회
• /
• pp.24-24
• /
• 2019

Iris L. is a perennial genus comprising approximately 300 species worldwide, with the greatest number of endemic species occurring in Asia. Iris is one of the largest genera in the family Iridaceae and includes ca. 15 species native to Korea. Although chromosome number change, karyotype restructuring, and genome size variation play an important role in plant genome diversification, understanding the karyotype variation in Korean Iris species has been hampered by the wide range of base chromosome number (x = 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22) reported to date. This study documents the chromosome numbers, karyotype structure and genome size variation in Iris ruthenica K. Gawl., an endangered species in Korea obtained using classic Feulgen staining and flow cytometry. The chromosome number of all investigated plants from the nine populations was 2n = 42. All individuals studied possessed metacentric and submetacentric chromosomes. The genome size of the I. ruthenica in eight wild populations ranged from 2.39 pg/1C to 2.45 pg/1C ($2.42{\pm}0.02pg/1C$: $mean{\pm}SD$). This study provides the first report of genome size variation in Iris ruthenica in Korea. This study lays foundation for cytogenetic further analyses employing by fluorescence in situ hybridization (FISH) to better understand the chromosomal evolution in this species and in the whole genus.

• Mycobiology
• /
• 제48권1호
• /
• pp.58-69
• /
• 2020

Meghalaya, (in India), in the region of the mega-biodiversity hotspots, is home to a plethora of wild mushrooms. The present study concerns the exploration of the order Agaricales, which includes rare gilled mushrooms considered endangered under IUCN A4c criteria, due to the declining habitat. Electron microscopy of the gill sections revealed an abundance of clamp connections, hyphal cell walls, cystidia, and basidia. This rare species which belongs to the family Cyphellaceae, exhibits morphological and molecular differences from the Cyphella spp. Phylogenetic analysis revealed that it formed a clade under the genus Campanophyllum of the order Agaricales, confirmed by both Neighbor Joining (NJ) and Bayesian phylogenetic analysis. Being nutritionally potent along with its efficient antioxidant value, the fungal extract shows significant rise of two-fold in the antimicrobial activity along with the commercial antibiotics. The compound, Phenol, 2, 4-bis (1, 1-Dimethylethyl) (2, 4-DTBP) showed in ample range in the fungal extract along with aliphatic hydrocarbons, terpene, alcohol and volatile organic compounds on further characterization in GCMS. The present study indicates the endangered Campanophyllum proboscideum could be a rich source of natural antioxidants and an effective pharmaceutical agent.

• 한국환경복원기술학회지
• /
• 제9권6호
• /
• pp.52-62
• /
• 2006

The flora of vascular plants around Chunji and Sochunji in Mt. Baekdu was listed 120 taxa; 31 families, 81 genera, 97 species, 1 subspecies, 21 varieties and 1 form. About endangered wild plants, 2 taxa (Paeonia obovata, Rhododendron aureum) are in class II. 12 taxa were listed as rare and endangered plants; Disporum ovale, Lilium davuricum, Saxifraga punctata, Rosa marretii, Cnidium tachiroei, Bupleurum euphorbioides, Halenia corniculata, Gentiana jamesii, Pedicularis verticillata, etc. 10 taxa were listed as Korean endemic plants; Lilium amabile, Aconitum pseudolaeve var. erectum, Oxytropis anertii for. alba, Valeriana officinalis var. latifolia, Cardamine resedifolia var. morii, Homopteryx nakaiana, Saussurea alpicola, Ligularia jamesii, etc. Specific plants by floral region were total 47 taxa; 3 taxa (Paeonia obovata, Rhododendron aureum, Pedicularis verticillata) in class V, 15 taxa (Lycopodium annotinum, Alnus maximowiczii, Saxifraga punctata, Petasites saxatile, etc.) in class IV, 5 taxa (Spiraea salicifolia, Sanguisorba hakusanensis, Acer ukurunduense, Campanula glomerata var. dahurica, Cacalia adenostyloides) in class III, 18 taxa (Lycopodium chinense, Disporum ovale, Ceologlossum viride var. bracteatum, Betula ermani, Aruncus dioicus var. kamtschaticus, Filipendula multijuga, Geranium eriostemon, Cnidium tachiroei, Ligularia stenocephala, etc.) in class II, 6 taxa (Pinus koraiensis, Cimicifuga simplex, Sanguisorba tenuifolia var. alba, Senecio nemorensis, Cacalia hastata subsp. orientalis, Cirsium pendulum) in class I. Peculiar flora around Chunji is thought to be made by the environmental factors such as wind, temperature and rainfall that influence the plants' growth.

• 정보관리학회지
• /
• 제16권3호
• /
• pp.101-115
• /
• 1999

본 연구에서는 자연사박물관 웹 컨텐트 자료 중 특히 천연기념물, 멸종 위기종, 보호대상종 및 회귀동물, 특산종 들을 중심으로 컨텐트 검색 시스템을 구현하는 것을 목적으로 하고 있다. 이를 위해, 컨텐트 정보를 데이터베이스시스템에 저장하고, 저장된 자료를 웹 상에서 효과적으로 서비스 할 수 있는 검색 시스템을 구축하였다.

• 한국자원식물학회지
• /
• 제18권3호
• /
• pp.390-402
• /
• 2005

본 연구는 충청북도 제천시 생태숲 조성예정지의 자원식물상을 체계적으로 파악하기 위해 수행되었다. 이 지역은 북위 $37^{\circ}\;12'$, 동경 $127^{\circ}\;57'$에 위치하고 2004년 3월부터 10월까지 조사하였다. 관속식물상은 83과 238속 324종 44변종 3품종 등 총 371종류가 확인되었고 자원식물상 조사결과 관상용 식물자원은 178종 $(47.98\%)$, 식용 식물자원은 232종$(62.53\%)$, 약용 식물자원은 257종$(69.27\%)$, 기타용 식물자원은 154종$(41.51\%)$로 나타났다. 산림청 희귀 및 멸종위기식물은 너도바람꽃, 백작약, 태백 제비꽃, 미치광이풀로 조사되었다.