• Title/Summary/Keyword: Species

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Effects of Interspecific Interactions of Arbuscular Mycorrhizal Fungi on Growth of Soybean and Corn

  • Jeong, Hyeon-Suk;Lee, Jai-Koo;Eom, Ahn-Heum
    • Mycobiology
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    • v.34 no.1
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    • pp.34-37
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    • 2006
  • Growth responses of Zea mays and Glycine max to colonization by mixture of combination of three species of arbuscular mycorrhizal (AM) fungi, two species of Glomus and a species of Scutellospora were compared. In Zea mays, plants inoculated with single species of AM fungi showed significantly higher in dry weight than non-mycorrhizal plant for all three AM fungal species. Also, growth of plants inoculated with spores of two species of AM fungi was significantly higher than nonmycorrhizal control except for plants inoculated with two Glomus species. When three species of AM fungi were inoculated, the plants showed the highest growth. In Glycine max, plants with single AM fungal species inoculation were not significantly different in plant growth from nonmycorrhizal plants. When the plants were inoculated with combination of two or more AM fungal species, their growth significantly increased compared to nonmycorrhizal plants. In both plant species, mycorrhizal root colonization by Scutellospora species was significantly lower than by Glomus species.

A Catalogue of Molluscan Fauna In Korea (한국산 연체동물 목록)

  • Lee, Jun-Sang;Min, Duk-Ki
    • The Korean Journal of Malacology
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    • v.18 no.2
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    • pp.93-217
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    • 2002
  • Molluscan specimens collected in the whole country of Korea during the from 1994 through 2002, were identified and classified. A total of 1,560 molluscan species were listed in this study; one species in class Aplacophora, 18 species in class Polyplacophora, 1,038 species in class Gastropoda, 467 species in class Bivalvia, 14 species in class Scaphopoda and 22 species in class Cephalopoda. Among the identified species, 360 species (three species in class Polyplacophora, 266 species in class Gastropoda, 85 species in class Bivalvia, 6 species in class Scaphopoda) are newly recorded to Korean fauna.

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A report of 36 unrecorded bacterial species belonging to the phyla Actinomycetota, Bacillota, Bacteroidota, Deinococcota, and Pseudomonadota isolated in Republic of Korea

  • Che-Ok Jeon;Wonyong Kim;Jin-Woo Bae;Chi-Nam Seong;Wan-Taek Im;Seung-Bum Kim;Jang-Cheon Cho;Myung Kyum Kim;Chang-Jun Cha;Taegun Seo;Jung-Hoon Yoon
    • Journal of Species Research
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    • v.12 no.4
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    • pp.415-429
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    • 2023
  • As part of a comprehensive investigation of indigenous prokaryotic species in the Republic of Korea, 37 bacterial strains belonging to 36 species were isolated from diverse environmental habitats. These strains were assigned to five phyla, namely Deinococcota, Actinomycetota, Bacillota, Bacteroidota, and Pseudomonadota. Each strain was identified based on 16S rRNA gene sequence similarity (>98.7%) and the formation of definite phylogenetic clades with their closest reported species. Among isolates, there is one species belonging to the phylum Deinococcota, five species belonging to the phylum Actinomycetota, four species belonging to the phylum Bacillota, nine species belonging to the phylum Bacteroidota, and 17 species belonging to the phylum Pseudomonadota (comprising eight species of the class Alphaproteobacteria, one species of the class Betaproteobacteria, and eight species of the class Gammaproteobacteria). Based on 16S rRNA gene sequence analysis, each strain was assigned to independent and predefined bacterial species. Since there were no published or official reports regarding these 36 species in the Republic of Korea, they have been reported as unrecorded species in the Republic of Korea. Their Gram stain, cell morphology, colony, basic biochemical characteristics, strain ID, and isolation source of each species are described in the species descriptions.

Species diversity of the old genus Navicula Bory (Bacillariophyta) on intertidal sand-flats in the Nakdong River estuary, Korea

  • Joh, Gyeongje
    • Journal of Ecology and Environment
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    • v.36 no.4
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    • pp.371-390
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    • 2013
  • Remarkable diversity of diatom taxa occurs in intertidal sand-flats of the Nakdong River estuary, one of the most dynamic and productive ecosystem in Korea. Benthic diatoms were collected from the sandy sediments to clarify the taxonomic accounts and distribution of the old genus Navicula, i.e., the naviculoid flora. Total 92 taxa belonging to Navicula sensu stricto and 22 genera separated from Navicula sensu lato are reported with brief descriptions and micrographs, and many species remain unidentified. The genera are ranked by the number of diatom species: Navicula of 33 species and varieties, Fallacia of 17 species, Placoneis of five species, Fogedia and Parlibellus of four species, Austariella, Hippodonta and Petroneis of three species, Cosmioneis, Diadesmis, Luticola, Moreneis and Sellaphora of two species and variety, Berkeleya, Chamaepinnularia, Cocconeiopsis, Diademoides, Dickieia, Eolimna, Geissleria, Haslea, Lyrella and Mayamaea of one species. Through 32 samplings of the 12 areas, the important species were identified Navicula perminuta, N. gregaria, N. torneensis, Fallacia cunoniae, F. litoricola, F. subforcipata, F. tenera. The naviculoid diatoms constitute an average of 27% (range: minimum to maximum, 5-75%), of the benthic diatom assemblages. The diatom assemblages are characterized by the colonizing of a few dominant or frequent species and many occasional or rare species. The dominant species were observed to fluctuate with sampling site and time. Among the reported naviculoid diatoms, 46 taxa are newly reported in Korea.

Definition of Invasive Disturbance Species and its Influence Factor: Review (침입교란종 개념 정립 및 영향요인 고찰)

  • Kim, Eunyoung;Song, Wonkyong;Yoon, Eunju;Jung, Hyejin
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.19 no.1
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    • pp.155-170
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    • 2016
  • This study established the definition of invasive disturbance species for a sustainable management and biodiversity, and derived the influence factors caused by the species. To define the species, the paper reviewed similar words such as alien species and invasive species, using standard definitions. Also reviewed the results of recent research on the factors of the species. The paper defined the invasive disturbance species as an species whose establishment and spread threaten ecosystems, habitats or species with economic or environmental harm including native and non-native. Through the reviews, The factors were classified as geographic (altitude, slope, and soil, etc.), climate (temperature, precipitation, climate change, etc.) and, anthropogenic (land use, population, road, and human activity, etc.), and species & vegetation structure (species property, local-species richness, and canopy, etc.). Especially, human activity such as urbanization and highways may be associated with both higher disturbance and higher propagule pressure. In the further study, it is required development of mitigation strategies and vegetation structure model against invasive disturbance species in urban forest based on this study.

A Herbological Study on the Plants of Amygdalaceae in Korea (한국산 앵도과 식물에 관한 본초학적(本草學的) 연구)

  • Jeong, Jong-Gil
    • The Korea Journal of Herbology
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    • v.31 no.1
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    • pp.49-59
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    • 2016
  • Objectives : This objective of this study was to develop the Korean herbology of the plants belonging to Amygdalaceae in Korea. The literatures of the successive generations have been thoroughly investigated to prepare this article.Methods : The 22 herbological books and research papers published at home and abroad were researched into their total catalog, medicinal plants, distribution, medicinal properties, actions etc.Results : There are totaled to 1 genus and 48 species in Amygdalaceae in Korea and among them, medicinal plants were 1 genus, 17 species, some 35 % in total. The Fructus is the main medicinal parts in the Amygdalaceae, which was used in 18 species. According to nature and flavor of medicinal plants in the Amygdalaceae, they were classified into balance 22 species, and warm 11; bitter taste 23, sweet taste 14 and sour taste 13 in the order. According to meridian propism of medicinal plants in the Amygdalaceae, they were classified into large intestine meridian 13 species, lung and liver meridian 11 species respectively. According to the properties and principal curative action, they were classified into drugs for activation of blood 11 species, drugs for detoxification 10 species, drugs for clearing away heat 9 species in the order. The number of toxic species in the Amygdalaceae was examined to be 5 species.Conclusions : Among 48 species in Amygdalaceae in Korea, medicinal plants are 17 species, and are mostly used for drugs for activation of blood, which are 11 species.

Characteristics Analysis of Site Condition and Disturbance Resistance of Tree Species for Damaged Forested Land in South Korea (산림재해지 복구를 위한 주요 수종의 입지 및 재해 저항 특성 분석)

  • Kang, Young-Ho;Lee, Chun-Yong;Bae, Yeong-Tae;Kim, Chan-Beom
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.14 no.6
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    • pp.1-15
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    • 2011
  • We recently witnessed increasingly more natural disturbances on forested land. On the other hand, only limited number of nursery grown tree species are available for restoration projects. At the same time, so little on the disturbance resistance of species has been studied that a selection of right species for right site condition becomes very difficult. This study is a compilation of the site specificities and disturbance resistance of each species native to South Korea. Each species was surveyed for 11 items related to site specificities, and 12 items related to disturbance resistance including the resistance to snow damage. This study was conducted for 161 tree species from 44 families : 21 evergreen conifer species, 2 deciduous conifer species, 18 evergreen broad-leaved species, 118 deciduous broad-leaved species, and 2 monocotyledon species. This study suggests that native species in South Korea show resistance to all types of natural disturbances except drought.

THE FLORA OF BRYOPHYTES ON MT. KWANAK, WITH SOME NEW ADDITIONS TO THE KOREAN FLORA (미기록종을 포함한 관악산의 선태류)

  • Hong, Won-Shic
    • Journal of Plant Biology
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    • v.3 no.2
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    • pp.19-25
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    • 1960
  • 1. This study was made on the flora of bryophytes on Mt. Kwanak, which is situated ($37^{\circ}$30' N. Lat. $127^{\circ}$O'E. Long) to the south of Seoul area. 2. The bryophytic flora of this mountain consists of the following elements. 1) Holarctic elem, Musci………16 species (25.0%), Hepaticae………4 species (28.6%). 2) North Pacific elem. M.………1 species (1.56%), H………O. 3) Cosmopolitan elem. M………10 species (15.65%), H………1 species (7.1%). 4) East-Asiatic elem. M………16 species (25%), H.………4 species (28.6%). 5) Tropical elem. M.………3 species (4.68%), H.………3 species (21.4%). 6) Japane-Korean elem. M.………17 species (26.56%), H.………2 species (14.3%). 7) Endemic elem. M.………1 species (1.56%), H.………O. 3. In the list of bryophytes of Mt. Kwanak, 62 species, 1 variety and 1 subspecies belonging to 47 genera for Musci and 12 species 2 subspecies belonging to 10 genera for Hepaticae were enumerated. Of these the following 5 species are new to Korean flora. 1) Macromitrium japonicum D.M. 2) Entodon arenosus Okam. 3) E. okamurae Broth. 4) Gollania ruginosa (Mitt.) Broth. 5) Temnona birmensis (St.) Hatt.

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Floral Changes During Three Years After Cheonggyecheon Restoration (청계천 복원 후 3년간 식물상 변화)

  • Kim, Hyeong-Guk;Koo, Bon-Hak
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.13 no.6
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    • pp.107-115
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    • 2010
  • This study was surveyed to identify changes of flora during three years after restoration in Cheonggyecheon stream. There are four sections in Cheonggyecheon. One and two sections are upper streams and three and four sections are down streams. It was surveyed 328 species in 2006. In 2007 and 2008, 446 and 444 species were found, respectively. This result shows that Cheonggyecheon is unstable initial condition in restored stream ecosystem. Naturalized species were 58 species in 2006 and it was respectively 61 and 63 species in 2007 and 2008. Hazard species of ecosystem were three common species during survey period. In appearance of flora per section, three and four sections constituted by natural sites such as point bars, wide flood plains, riffles and ponds, marshes, etc. were surveyed more species than one and two constructed by concrete materials and narrow flow channel. Recently, as time goes by, introduced species are being increased. And succession has mainly been progressed by one year or binary herbs and perennial herbs. Compared with other restored streams, Cheonggyecheon showed more flora than Yangjaecheon and Anyangcheon. It is judged owing to length of surveyed site, various planted species and area of inhabitation space. To manage restored stream ecosystem, monitoring is essential. Further, because change of vegetation after restoration in Cheonggyecheon is very important, continuous monitoring about Flora and Naturalized species and Hazard species of ecosystem is also very important.

Temporary Dominance of Exotic Plant Species on Overburden Coal Mines in South Kalimantan

  • Vivi Novianti
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • v.4 no.1
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    • pp.16-27
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    • 2023
  • Primary succession on bare rocks is a challenge for invaders, including one of which was plants. The invasion of bare rock by exotic species raises the question of whether their presence hinders or facilitates succession. This study aimed to determine the role of exotic species in primary succession in six overburden (OB) coal mines using a chronosequence approach. Vegetation analysis was undertaken using line transects. Measurements were carried out on the absolute and relative coverage of each species. Native and exotic species were identified and grouped using information from local communities, identification books, and websites. The relationship between time and number of species, time, and relative dominance of exotic and native species was analyzed using Pearson's correlation. Species number and dominance data were analyzed descriptively. The number of native species from the six OB heaps was higher (57) than that from exotic heaps (50). Neither the number of species nor the coverage showed a significant relationship with time. Exotic species predominated throughout the age of the embankment but tended to decrease over time. Temporary dominance by exotic species plays a role in assisting primary succession in the OB. This process might be prolonged without the temporary dominance of exotic species during early primary succession.