• Title/Summary/Keyword: oribatid mites

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Diversity of Oribatid Mites (Acari : Oribatida) in Namsan and Kwangreung Deciduous Forests (남산과 광릉 활엽수림지역의 날개응애류(Acari : Oribatida) 종 구성)

  • 정철의;이준호;배윤환;최성식
    • The Korean Journal of Soil Zoology
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    • v.3 no.2
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    • pp.91-105
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    • 1998
  • This study was conducted to analyze oribatid mites communities in deciduous forests in Namsan and Kwangreung on which different levels of environmental stresses might press, and to select potential condidate of biological indicator species. In overall, pH was lower in soil than in litter layer. Also soil pH, total nitrate content and soluble sulfate content were significantly higher in Namsan than in Kwangreung (p<0.05). The flora in Namsan and Kwangreung deciduous forests were dominated by Quercus mongolica, and Carpinus laxiflora respectively. It indicated that Namsan was in the lower stage of the floral succession. The number of species of oribatid mites was significantly higher in Kwangreung (39 families, 65 genera and 114 species) than in Namsan (32 families, 53 genera and 89 species) (p<0.05). Common species found in two regions were 77 species. Mean density of oribatid mites was 1.8 times higher in Kwangreung than in Namsan and this difference came mainly from litter layer. Among correlation analyses between environmental factors and oribatid mites density and species number, only density was negatively correlated with fresh litter depth in Namsan litter layer (r=-0.89, p<0.05). The pH which was considered to affect distribution of oribatid mites didn't show significant results.

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A New Species, Acanthobelba heterosetosa, of Oribatid Mite from Mt. Jiri in Korea (한국산 날개응애 1신종, 곧은낚시바늘염주응애)

  • 최성식
    • The Korean Journal of Soil Zoology
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    • v.2 no.1
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    • pp.16-18
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    • 1997
  • Compared with type specimen Acanthobelba tortuosa Enami and Aoki, 1993, a new species, A. heterosetosa sp. nov., of oribatid mites collected from Mt. Jiri has the following characteristic figures. Sensillus is long, slightly thickened at distal part, and covered with barbs sparsely. A pair of prodorsal tubercles Da are present. Natogastral frontal tubercles sa is elongated rather than hooked. Dorsal setae are not the same in shape and length: setae c1 and c2 are thick, blunt at tip, covered with small barbs and curved several times, but others are smooth.

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Diversity of Oribatid Mites (Acari : Oribatida) in Namsan and Kwangreung Coniferous Forests (남산과 광릉 침엽수림지역의 날개응애류(Acari : Oribatida) 종 구성)

  • 박홍현;이준호;배윤환;최성식
    • The Korean Journal of Soil Zoology
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    • v.3 no.2
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    • pp.78-90
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    • 1998
  • This study was carried out from May 1993 to October 1994 to examine diversity of oribatid mites in Namsan and Kwangreung coniferous forests, which were considered to receive different degrees of environmental pressures. Also, environmental factors (pH of soil and rainfall, litter depth, organic matter) were recorded in the two forests. The pH of soil and rainfall were not different between the two forests, but litter depth and organic matter were significantly higher in Namsan than in Kwangreung (p<0.05). The dominant families (>5% of the total densities) were Scheloribatidae(27.3%), Galumnidae(13.4%), Oppiidae (9.9%), Hypochthonidae(7.6%), Suctobelbidae(6.6%), Euphthiracaridae(5.9%) in Namsan and Ceratozetidae(25.9%), Mycobatidae (14.2%), Oppiidae(14.2%), Galumnidae(11.4%), Astegistidae(8.7%) in Kwangreung. The numbers of species were significantly higher in Kwangreung (103 spp.) than in Namsan (74 spp.)(p<0.05). The total densities of oribatid mites were more abundant in Kwangreung (8,709 ind.) than in Namsan (5,899 ind.) and the difference was significant for density in litter layer (p<0.05).

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Some Unrecorded Species of Oribatid Mites (Acari : Oribatida) from Korea (한국 산 날개응애류의 미기녹종(3))

  • 최성식;남궁성박
    • The Korean Journal of Soil Zoology
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    • v.7 no.1_2
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    • pp.23-28
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    • 2002
  • In the course of taxonomical studies of oribatid mites, eight species, Tenuiala nuda Ewing, 1913, Cosmopirnodus angulatus Ichisawa and Aoki, 1998, Neoribates pallidus Aoki, 1988, Belba sellnicki Bulanova-Zachvatkina, 1962, Camisia horrida (Hermann 1804), Hermannia gibba (C. L. Koch 1839), Eueremaeus elongatus (Fujikawa 1972), and Licnodamaeus undulatus (Paoli 1908) are recorded from Korea for the first time.

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Comparison of Oribatid Mite (Acari : Oribatida) Communities among City, Suburban, and Natural Forest Ecosystems : Namsan, Kwangreung, and Mt. Jumbong

  • Lee, Joon-Ho;Park, Hong-Hyun;Kang, Bang-Hun;Jung, Chul-Eui;Choi, Seong-Sik
    • The Korean Journal of Ecology
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    • v.23 no.2
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    • pp.107-112
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    • 2000
  • Comparison of oribatid mite community structures among Namsan, Kwangreung, and Mt, Jumbong, which receive different levels of environmental stress from severe to almost none, was made in coniferous and deciduous forests, respectively. The number of species of oribatid mites was significantly lower in Namsan and Mt. Jumbong than in Kwangreung in the coniferous forest (p<0.05). In the deciduous forests, the number of species of oribatid mites was significantly lower in Namsan than in Kwangreung and Mt. Jumbong. Dominant species in 3 regions were remarkably different. Similarity of the oribatid community between Namsan and Kwangreung was much higher (ca. 2 times) than similarities between Namsan and Mt. Jumbong. and Kwangreung and Mt Jumbong. Diversity index (H$^{\prime}$) value of oribatid communities in deciduous forests in Namsan, Kwangreung and Mt. Jumbong was 2.74, 2.78, and 2.87, respectively. Diversity (H$^{\prime}$) value of oribatid communities in coniferous forests in Namsan, Kwangreung and Mt. Jumbong was 2.83, 2.62, and 2.38, respectively. Namsan and Kwangreung were characterized as O-type in both coniferous and deciduous forests On the contrary, Mt. Jumbong was characterized as MG-type in MGP-I analysis.

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