Edaphologia

[title in Japanese]

Article type: Cover
2002 Volume 69 Pages Cover1-
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_Cover1

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[title in Japanese]

Article type: Appendix
2002 Volume 69 Pages App1-
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_App1

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Two New Species of the Family Chthoniidae from Kyushu, in Western Japan (Arachnida : Pseudoscorpionida)

Hiroshi SAKAYORI

Article type: Article
2002 Volume 69 Pages 1-7
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_1

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Two new pseudoscorpion species, Mundochthonius kuiyoshii sp. nov. and Allochthonius kinkaiensis sp. nov., are described from Kyushu, western Japan, belonging to the family Chthoniidae. They are characteristic in the proportion (length/breadth) of palpal femur and in chaetotaxies on carapace and tergites.

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A New Species of Liacarus (Acari : Oribatida : Liacaridae) from a Subalpine Coniferous Forest in Central Japan

Badamdorj BAYARTOGTOKH, Jun-ichi AOKI

Article type: Article
2002 Volume 69 Pages 9-12
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_9

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A new species of oribatid mite, Liacarus kanekoi sp. nov., collected from mosses growing on the rocks in a subalpine coniferous forest of Mt. Yatsugatake, Central Japan is described. The new species is distinguishable from other closely related species of Liacarus by the short interlamellar setae, long notogastral setae p, and relatively narrow anterior projection or median mucro between lamellar cusps.

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Three Species of Cepheidae and Cymbaeremaeidae (Acari : Oribatida) from Nippon

Tokuko FUJIKAWA

Article type: Article
2002 Volume 69 Pages 13-23
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_13

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Three species were described or redescribed as members of two genera of Cymbaeremaeidae and a genus of Cepheidae from a natural Picea forest at Mt. Hayachine and a natural Fagus forest at the Shirakami-sanchi World Heritage Area: Cymbaeremaeus silva spec. nov., Eupterotegaeus armatus AOKI, 1969, and Scapheremaeus yamashitai AOKI, 1970.

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Effect of Spring Plowing on the Spatial Distribution of Aquatic Organisms in a Paddy Field during the Off-crop Season under Drained Conditions

Masatsugu YAMAZAKI, Yukihiro HAMADA, Nobuchika KAMIMOTO, Takashi MOMII ...

Article type: Article
2002 Volume 69 Pages 25-33
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_25

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This paper demonstrated the effect of spring plowing on the dormant aquatic organisms with size between 30 μm to 2 cm in a paddy field. Although there was no floodwater in the paddy field during the off-crop season, the soil was wet (about 25% water content) before the plowing because of the coverage by rice straw. But the plowing in spring resulted in the soil desiccation (to about 2%). On the 10th day after the plowing, we collected following soil and rice straw samples: rice straw, bulk soil, rice stubble, 0-1.5 cm soil below rice stubble, and 1.5-3.0 cm soil below rice stubble in both the dry surface soil layer (0-4 cm) and the wet soil layer (4-15 cm). After incubated the samples under flood conditions for fifty days, we identified the aquatic organisms that appeared during the incubation and mainly classified them at the order level. Thirty two varieties (classified groups) of aquatic organisms emerged during the incubation. The number of varieties that emerged during the incubation from the respective samples was larger in the wet soil layer than in the dry surface soil layer. Pennales and Haplotaxida, and Colpodida chose the wet soil layer and the dry surface soil layer, respectively, as their survival site. The difference in the composition of aquatic organisms among sites was larger than the difference between the dry surface layer and the wet soil layer, and the composition of aquatic organisms at the respective sites was not changed significantly by the plowing in spring.

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The seasonal change in abundance of Hypogastrura denisana YOSII on agaric mushrooms in relation to its life cycle

Takuo SAWAHATA, Kiyoshi SOMA, Masatake OHMASA

Article type: Article
2002 Volume 69 Pages 35-45
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_35

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Hypogastrura denisana in a forest soil was abundant in spring and summer and low in autumn and winter. The majority of H. denisana had one generation per year and their life cycle was represented by recruitment in early spring, growth in spring and autumn and arrestation in growth from May to August. Hypogastrura denisana was abundant on mushrooms in autumn. On the mushrooms, large individuals (0.7-5 mm in body length) were more abundant than small individuals (0.3-0.7 mm) throughout the year, while in the soil, the proportion of large individuals was low in spring and high in autumn. Thus, the small individuals in the soil did not contribute to the population size on mushrooms. The abundance of H. denisana on the mushrooms found in autumn results from abundance of large individuals in the soil in autumn.

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Obstruction of trains by the outbreaks of a millipede Chamberlinius hualienensis WANG (Diplopoda : Polydesmida)

Keiko NIIJIMA, Toshihiro ARIMURA

Article type: Article
2002 Volume 69 Pages 47-49
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_47

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The outbreak of Chamberlinius hualienensis happened between Goryo and Ishikaki Station, Ibusuki Makurazaki Line, Kagoshima Prefecture and stopped trains in early winter 2000. The mulch and windmills to protect the crops from winter chillings seemed to provide the favorite environment for the millipedes, which is originally distributed in Hualien, Taiwan.

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[title in Japanese]

Article type: Appendix
2002 Volume 69 Pages 51-
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_51

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[title in Japanese]

Article type: Appendix
2002 Volume 69 Pages 52-
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_52

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[title in Japanese]

Article type: Appendix
2002 Volume 69 Pages App2-
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_App2

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[title in Japanese]

Article type: Cover
2002 Volume 69 Pages Cover2-
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_Cover2

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[title in Japanese]

Article type: Cover
2002 Volume 69 Pages Cover3-
Published: February 28, 2002
Released on J-STAGE: July 20, 2017

DOIhttps://doi.org/10.20695/edaphologia.69.0_Cover3

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