• Title/Summary/Keyword: flora, species diversity

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Notes on Cordyceps species Collected from the Central Region of Nepal

  • Shrestha, Bhushan;Sung, Jae-Mo
    • Mycobiology
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    • v.33 no.4
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    • pp.235-239
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    • 2005
  • The present study was carried out to explore the Cordyceps species and other entomopathogenic fungal flora around Kathmandu Valley and a few high altitude locations of Nepal. In this paper, we report eight Cordyceps species as new to Nepal: C. gracilis, C. ishikariensis, C. liangshanensis, C. martialis, C. militaris, C. pruinosa, C. sphecocephala and C. tricentri. We also mention a few allied genera such as Beauveria, Hirsutella and Paecilomyces from Nepal. Further collections from different ecological regions of Nepal will show the richness of entomopathogenic fungal floral diversity of Nepal.

An Ecological study on the Sanchon-tideland and Doma-tideland (도마간석지와 산촌간석지에 대한 생태학적 연구)

  • Kim, In-Taek;Cheong, Seon-Woo;Seo, Jeoung-Yoon;Park, Joong-Suk;Oh, Kyung-Hwan;Lee, Chan-Won
    • Journal of Wetlands Research
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    • v.5 no.2
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    • pp.57-65
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    • 2003
  • This study was corried out to provide basic data for water analysis biodiversity, Actual vegetation map, flora and fauna on the Sanchon-tideland(Geojaesi), Doma-tideland(Namhaegun) in Kyungsangnamdo from august 2002 to February 2003. This tidelands was very broad and was being reclaimed. Therefore, it was anxious about destroying the habitat of the water birds. Since the water temperature was influenced by the surrounding air, it was highest in summer and lowest in winter. pH value and DO concentration of the water was highest in winter in the Sanchon-tideland and in surmmer in the Doma-tideland. COD concentration was lowest in winter in two tidelands. SS concentration was highest in summer. T-P and T-N concentration were very low but decreased with the seasonal change from summer to winter. Vascular plants of this area consist of 11 varieties, 67 species, 64 genera, 29 families(Sanchon-tideland) and 1 forma, 11varieties, 62 species, 64 genera, 30 families(Doma-tideland). The predominant community of this area, Phragmites communis Community were found on the seashore. The total insect specimens were classified into 120 species, 48 families, 10 orders(Sanchon-tideland) and perdominant species were Gabala argentata(Dominance 18.78%, Diversity index 1.75, Richness index 45.78). And 91 species, 40 families, 8 orders(Doma-tideland) and perdominant species were Sternolophus (Sternolophus) rufipes(Dominance 15.47%, Diversity index 1.47, Richness index 33.66). The total Fishes were classified into 3 species, 2 families, 1 order and Amphibia were 3 species, 2 families, 1 order. And Salicomia herbacea should be worthwhile species to conserve in this area. Because the water birds lived in The Tideland Sanchon and Doma, it was considered that it was necessary to preserve them.

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Diversity of Moojechineup's flora (무제치늪 식물상의 다양성)

  • Park, Seongjun;An, Bo-Ram;Jang, Soon-Young;Park, SeonJoo
    • Korean Journal of Plant Taxonomy
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    • v.41 no.4
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    • pp.370-382
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    • 2011
  • We investigated the area around four moors from May 2009 to June 2010 for plant diversity in Moojechineup, officially designated as the Ramsar wetland. The vascular plants of Moojechineup at Mt. Jeongjok were recorded as total 149 taxa, 55 families, 105 genera, 128 species, 1 subspecies, 16 varieties, and 4 forms. Rare plants were observed 7 taxa (Eriophorum gracile Koch, Drosera rotundifolia L., Iris ensata var. spontanea (Makino) Nakai, Kobresia bellardii (All.) Degl, Utricularia bifida L., Utricularia racemosa Wall., Utricularia yakusimensis Masam.). Korean endemic plants were 1 taxon, floristics special plants were 19 taxa, and naturalized plants were 3 taxa. Phytogeographical and evolutionarily, Eriophorum gracile is an important species; hence, further studies are needed to conserve it. Moojechineup is similar to the Shinbulsan wetland in terms of wetland plants (hydrophytes). Moojechineup's flora changes are in process slowly compared to earlier work; thus, continuing interest and appropriate measures should be encouraged.

Study on the Current Status of Naturalized Plant in Jeolla-do (전라도 귀화식물의 현황)

  • Kim, Deok-Ki;Ryu, Tae-Bok;Lee, Chang-Woo;Choi, Dong-Hui;Kim, Nam-Young
    • Korean Journal of Plant Resources
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    • v.30 no.4
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    • pp.399-409
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    • 2017
  • The rapid increase of naturalized plants causes disturbance of the ecosystem. The purpose of this study is to identify the reality of naturalized flora in Jeolla-do. A total of 830 sites were studied in 2016. These naturalized plants consisted of 189 taxa in total, belonging to 38 families, 116 genera, 181 species, 2 forms and 6 varieties. According to the results of the analysis based on place of origin, 75 taxa were from Europe, and 59 taxa were from North America. According to the analysis of the ecological characteristics, compositae had the highest diversity among 31 families, with 44 taxa, followed by Gramineae, with 24 taxa, and Leguminosae, with 10 taxa. Naju-si had the highest diversity among 36 counties, with 77 taxa. This study identified 37 (Jeollanam-do) and 30 taxa (Jeollabuk-do) not listed in the preceding literature in Jeolla-do. We found a lots of differences between flora's databases of previous studies resulting from the naturalized plant definition.

Studies on the Yellow Fungal Isolates (Aspergillus species) Inhabiting at the Cereals in Korea (한국전통 식품의 원료인 메주와 누룩에서 분리된 황곡균에 대한 연구)

  • Lee, Sang-Sun;Park, Dae-Ho;Sung, Chang-Kun;Yoo, Jin-Young
    • The Korean Journal of Mycology
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    • v.25 no.1 s.80
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    • pp.35-45
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    • 1997
  • The yellow fungal isolates inhabiting at the cereals (Hwang-Kuk, HK-fungi) were widely collected from the mejus and nuluks in Korea; the meju is a raw material for Korean traditional foods for soysauce and soypaste, and the nuluk is a raw material for Korean traditional rice wine. These isolates, well known as an Aspergillus oryzae producing amylase for Korean rice wine or producing protease for soybeans, were compared with Aspergillus species known. All isolates were microscopically observed to be a species of A. oryzae or its related, but to be difficult to be identified. Thus, RAPD-DNA techniques were applied for these isolates and analyzed with nummerical values using NT-system, or Ecological programs or Factorial analyses. Several common bands of RAPD-DNA in the 28 isolates were synthesized with the different OPD primers and speculated to be used for identification of HK fungi. The HK-fungi isolated were revealed to belong to the group of A. flavus previously defined. Particularly, the isolates collected from mejus were analyzed to be more closed to A. flavus, The species of A. flavus, A. oryzae and A. sojae were grouped at the values lower than those indicating the diversity of species. In other words, these three fungal species were not distinguishable and all isolates known as a HK-fungus were very closed to A. flavus, All isolates were not diversified at groupings of RAPD-DNA, and considered to be not the natural flora at the mejus or nuluks. The meju or nuluk having the above fungi as the fungal flora were speculated to be not termed "Korean traditional foodstuffs".The yellow fungal isolates inhabiting at the cereals (Hwang-Kuk, HK-fungi) were widely collected from the mejus and nuluks in Korea; the meju is a raw material for Korean traditional foods for soysauce and soypaste, and the nuluk is a raw material for Korean traditional rice wine. These isolates, well known as an Aspergillus oryzae producing amylase for Korean rice wine or producing protease for soybeans, were compared with Aspergillus species known. All isolates were microscopically observed to be a species of A. oryzae or its related, but to be difficult to be identified. Thus, RAPD-DNA techniques were applied for these isolates and analyzed with nummerical values using NT-system, or Ecological programs or Factorial analyses. Several common bands of RAPD-DNA in the 28 isolates were synthesized with the different OPD primers and speculated to be used for identification of HK fungi. The HK-fungi isolated were revealed to belong to the group of A. flavus previously defined. Particularly, the isolates collected from mejus were analyzed to be more closed to A. flavus, The species of A. flavus, A. oryzae and A. sojae were grouped at the values lower than those indicating the diversity of species. In other words, these three fungal species were not distinguishable and all isolates known as a HK-fungus were very closed to A. flavus. All isolates were not diversified at groupings of RAPD-DNA, and considered to be not the natural flora at the mejus or nuluks. The meju or nuluk having the above fungi as the fungal flora were speculated to be not termed 'Korean traditional foodstuffs'.

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Analysis of the Flora and Vegetation Community in Forest Genetic Resources Reserves (Mt. Daeseng, Juparyeong), Near the DMZ (DMZ 인근지역 산림유전자원보호구역(대성산, 주파령)의 식물상 및 식생군집분석)

  • Son, Ho-Jun;Kim, Young-Sol;Ahn, Chi-Ho;Park, Wan-Geun
    • Journal of Korean Society of Forest Science
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    • v.105 no.1
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    • pp.19-41
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    • 2016
  • This study examined the flora and community classification in the Forest Genetic Resources Reserves (FGRR) at Mt. Daeseng and Juparyeong to understand the degree of disturbance and the state of forest stand development within the Civilian Control Line (CCL) and to provide baseline data for preservation and management. Of the vascular plants dispersed throughout the study site, there were 98 families, 311 genera, 507 species, 6 subspecies, 65 varieties, and 10 forms, for a total of 588 taxa. Of these, 92 families, 290 genera, 459 species, 6 subspecies, 58 varieties, and 9 forms, for a total of 532 taxa of native plants, were determined to be dispersed around the FGRR at Mt. Daeseng, and 94 families, 259 genera, 364 species, 6 subspecies, 50 varieties, and 8 forms, for a total of 428 taxa of native plants, were confirmed to be dispersed around the FGRR at Juparyeong. There were 21 taxa of endemic Korean plants growing in the FGRR at Mt. Daeseng, with 14 taxa growing in the FGRR at Juparyeong. In terms of rare plants, 26 taxa were confirmed in the FGRR at Mt. Daeseng, and 10 taxa were confirmed in the FGRR at Juparyeong. A Cluster analysis was performed using vegetation data taken from 58 sample plots in each FGRR. The results showed a total of three representative community classifications from Mt. Daeseng: mixed mesophytic forest, Quercus mongolica-Acer pseudosieboldianum, and Quercus mongolica-Fraxinus rhynchophylla communities. Four representative community classifications were observed from Juparyeong: Quercus mongolica-broad leaved forest, Fraxinus rhynchophylla-broad leaved forest, Quercus mongolica, and Quercus communities. On the whole, the species diversity of the communities in Mt. Daeseng FGRR was greater than for the communities in Juparyeong FGRR. At Mt. Daeseng, the mixed mesophytic forest had the highest species diversity index at 1.590, while at Juparyeong, the Fraxinus rhynchophylla-broad leaved forest had the highest species diversity index at 1.319. These study results should serve as useful baseline data for future preservation and management of the demilitarized zone (DMZ) and the surrounding area.

The first record of Ulva adhaerens(Ulvaceae, Chlorophyta) from Jeju Island, Korea

  • Hyung Woo, Lee;Eun Hee, Bae;Myung Sook, Kim
    • Journal of Species Research
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    • v.11 no.4
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    • pp.266-277
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    • 2022
  • The current surveys of Ulva in the subtidal area around Jeju Island give a chance to discover unrecorded green algal species of the Korean macroalgal flora. As a result of this investigation, we found Ulva adhaerens Matusmoto & Shimada, inhabiting the subtidal regions, up to 15 m deep, and conducted the DNA barcoding on plastid rbcL-3P and tufA regions with describing the morphological characteristics. Our specimens of U. adhaerens forms a monophyletic clade with the Japanese type specimen and U. piritoka Ngāti Kuri, Heesch & W.A. Nelson from New Zealand exhibiting each 0.3% sequence divergences, respectively, in the plastid rbcL-3P. The genetic variation of U. adhaerens clade is 1.0-3.9% in rbcL-3P and 4.8-9.8% in tufA to each Ulva species, including the generic type, U. lactuca Linneaus. The morphology of Korean U. adhaerens specimens is identical to the type specimens of U. adhaerens from Japan having the development of rhizoidal filaments from both of the cell layers of the distromatic blade and the extension of rhizoidal clumps with adhesive trait between blades by extended rhizoidal clumps at the basal blades. The thallus attachment to substrate is by numerous minute discoidal plates made up of rhizoids originating from the inner part of distromatic blades in basal. Although there are still some problems to resolve the relationship between U. adhaerens and U. piritoka in the rbcL dataset and the phylogenetic pattern of the Group II intron of rbcL, we propose the new record of U. adhaerens in Korean macroalgal flora based on the morphological characteristics of Korean specimens. Continued study of the genus Ulva by morphological and molecular assessment will delimit the species of Ulva, elucidate the relationships between them, and uncover the species diversity.

Flora of aquatic and wetland habitats on Jeju Island (제주도의 수생 및 습생 식물상)

  • Kang, Dae-Hyun;Yim, Eun-Young;Moon, Myung-Ok
    • Korean Journal of Plant Taxonomy
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    • v.45 no.1
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    • pp.96-107
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    • 2015
  • This study presents a comprehensive account of the flora of hydrophytes and hygrophytes on Jeju Island. This approach aims to contribute to fundamental information about the conservation of plant diversity in wetlands. Field surveys were carried out from May of 2010 to September of 2014 in various types of wetlands on Jeju Island. A total of 189 taxa, including 52 families, 98 genera, 181 species, 6 varieties, 2 forma and 189 taxa, were found. Among them, 99 taxa (38 families, 60 genera, 96 species and 3 varieties) were hydrophytes and 90 taxa (23 families, 45 genera, 85 species, 3 varieties and 2 forma) were hygrophytes. In addition, Eleocharis${\times}$yezoensis H. Hara (Cyperaceae) was newly added to the flora of Korea. The protected wild plants designated by the Ministry of the Environment were 5 taxa, including Brasenia schreberi J. F. Gmel. and Dysophylla yatabeana Makino. The endangered species found included one Critically Endangered Species (i.e., Mankyua chejuense B.-Y. Sun, M. H. Kim & C. H. Kim), 5 Endangered Species (e.g., Lysimachia leucantha Miq.) and 7 Vulnerable Species (e.g., Tillaea aquatica L.). The floristic regional indicator plants found in this area were 44 taxa comprising 10 taxa of grade V, 7 taxa grade IV, 15 taxa of grade III, 5 taxa of grade II, and 7 taxa of grade I. The identified naturalized plants were 10 taxa; 8 families, 8 genera, 9 species and 1 variety. In the wetlands on Jeju Island, high plant species diversity was shown, and a number of rare plants and phytogeographically important plants were found. For these reasons, we consider that the wetlands on Jeju Island are very important areas from a botanical point of view. It is necessary to establish specific protection and maintenance policies in an effort to conserve these wetlands and species.

Forest Vegetation Classification and Species Composition of Mt. Ilwol, Yeongyang-Gun, Korea (일월산 산림식생의 종구성적 특성)

  • Lee Jung-Hyo;Bae Kwan-Ho;Cho Hyun-Je
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.8 no.3
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    • pp.132-140
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    • 2006
  • Forest vegetation classification and species composition of Mt. Ilwol, Yeongyang-Gun, Korea, were studied combining the Braun-Blanquet approach with numerical syntaxonomical analyses (TWINSPAN). Vegetation types and various ecological characteristics such as flora, constancy classes, species ratio of life-form, species diversity and importance value were analyzed. Sixty-eight samples were taken from a $100m^2$ square plot each. Forest communities were identified as two great types: arid landform of mountainside (AM) and humid fertility of piedmont and valley (HP). The former was divided into 3 communities (Rhododendron mucronulatum, Quercus variabilis, Hosta capitat community) and 2groups, and the latter into 3 communities (Tilia amurensis, Vitis coignetiae, Philadelphus schrenckii community) and 2 groups. Vegetation was classified into 8 units. Floristically, the most represented family was Compositae with 26 species. Species with percentage constance degree of more than 61% was Quercus mongolica (72.1%, IV); Carex siderosticat (III) and Fraxinus rhynchophylla (III) were 50.0 and 41.1%, respectively. Life-forms species ratios for trees, subtrees, shrub, vines, grominoids, forbs and ferns were 18.5, 5.7, 14.9, 6.6, 8.8, 42.4 and 3.1%, respectively, PH type showed from $1.70{\pm}0.50\;to\;1.97{\pm}0.57$ and AM type was from $1.40{\pm}0.18\;to\;1.62{\pm}0.20$ in species diversity; therefore, the former type showed higher species diversity than the latter, According to importance value analysis, Pinus densiflora, Quercus mongolica and Q. variabilis were higher in the tree layer, Q. mongolica in the subtree layer, Fraxinus sieboldiana, R. schlippenbachii, etc. in the shrub layer and Carex siderosticta, Carex humilis, etc. in the herb layer.

Contribution of Ecological Surveys to Coastal Conservation: A Case in Soft Shore Study

  • Tai, K. K;Cheung, S.-G;Shin, P.-K.-S.
    • The Korean Journal of Ecology
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    • v.27 no.3
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    • pp.127-131
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    • 2004
  • Soft shores are particularly vulnerable to human exploitation; however, they exhibit a variety of habitats which provide refuge for a diversity of flora and fauna. This study describes a survey of 13 soft shores in Hong Kong with information on species diversity, sediment characteristics, shore extent, pollution threat, degree of naturalness, linkage with other ecological habitats, and degree of social/economic importance. Data collected were subjected to multivariate statistical analyses, so as to identify shores that have significant ecological status and conservation value for management purposes.