Edaphologia

表紙

原稿種別: 表紙
2004 年 74 巻 p. Cover1-
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_Cover1

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日本土壌動物学会役員名簿

原稿種別: 付録等
2004 年 74 巻 p. App1-
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_App1

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複写される方へ

原稿種別: 付録等
2004 年 74 巻 p. App2-
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_App2

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湛水期間中の水田水生生物群集の生息場所について

山崎真嗣, 濱田千裕, 神本宣親, 籾井隆志, 木村眞人

原稿種別: 本文
2004 年 74 巻 p. 1-10
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_1

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The spatial distribution of aquatic organisms ranging in size from 30 μm to 2 cm in a paddy field was investigated during the waterlogged period. We collected the samples about every ten days from three habitats (the water column, the water-sediment interface, and the water around rice plants), and counted the number of aquatic organisms that were identified mainly at the order level. As a result, thirty-four varieties (classified groups) of aquatic organisms were found. In particular, the population densities of sixteen varieties significantly differed among the three habitats (the two-way ANOVA, p<0.05). The number of varieties of aquatic organisms also significantly differed among the three habitats (the two-way ANOVA, p<0.05). The number of varieties was higher at the water-sediment interface before the midseason drainage, whereas it was higher in the water around rice plants after the midseason drainage. Authors used principal component analysis to show the differences in the community structure of aquatic organisms among the three different habitats. Although the community structure did not differ between the water column and the water around rice plants before the midseason drainage, it differed between them after the midseason drainage. Two varieties of phytoplankton (Volvocida and Euglenida) characterized the community structure of aquatic organisms in the water column and the water around rice plants before the midseason drainage, while two varieties of phytoplankton (Zygnematales and Dinoflagellida) and three varieties of heterotrophic organisms (Prorodontida, Turbellaria, and Chaetonotida) characterized the community structures in the water column and the water around rice plants after the midseason drainage, respectively. The community structure in the water-sediment interface differed from those found at the other habitats throughout the flooding period. Three varieties of heterotrophic organisms (Nematoda, Haplotaxida, and Podocopida) characterized the community structure of aquatic organisms in the water-sediment interface.

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四国産フサゲモンツキダニ属の1新種

藤川徳子

原稿種別: 本文
2004 年 74 巻 p. 11-14
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_11

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A new species, Allonothrus henroi spec. nov. was collected from Shikoku Island, Japan. The new species has an inverted U-shaped lamellar ridge, two pairs of transversal ridges, lamellar setae extending in front of rostral margin, and a circle cavity on prodorsum, and a large cavity as long as mutual distance of setae h_1 in terminal of notogaster.

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異なる2つの林分におけるキシャヤスデ幼虫の生息密度と土壌微生物量との関係

豊田鮎, 金子信博

原稿種別: 本文
2004 年 74 巻 p. 15-25
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_15

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Relation between larval train millipede density and soil microbial biomass under two different forest. Ayu Toyota and Nobuhiro Kaneko (Soil Ecology Research Group, Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Yokohama, 240-8501, Japan). The relationship between larval train millipede, Parafontaria laminata (Attems, 1909) density and soil microbial biomass in larch, Larix kaempferi (Lamb.), oak, Quercus mongolica Fischer ex Turcz. var. grosserrata (Bl.) Rehd. et Wils. forest soils was examined. The larvae were found in soil at high density as all individuals in a population consisted of a single cohort (same age) in the study site. The effects of the train millipede on soil microbial biomass were observed for two growing seasons at 6th instar and 7th instar larval stages. Distribution of both instars was similar between the larch and oak forests. Sixth instar larvae reduced soil microbial biomass with increasing density in the larch forest, whereas they gave a non-linear density effect on soil microbial biomass in the oak forest. However, at 7th instar, there was no decrease in soil microbial biomass even at high density spot. These effects of larval train millipede on soil microbial biomass were considered to result from feeding behavior, such as geophagous at 6th instar larvae, and litter and soil mixed feeding at 7th instar larvae.

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日本に侵入したアルゼンチンアリ(Linepithema humile)の冬季の活動状況 : 特に気温との関係に着目して

頭山昌郁, 伊藤文紀, 亀山剛

原稿種別: 本文
2004 年 74 巻 p. 27-34
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_27

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Foraging activity of Argentine ant (Linepithema humile) in Japan during winter season, especially in relation with the temperature. Yoshifumi Touyama (Faculty of Integrated Arts and Sciences, Hiroshima University, Hiroshima 739-8521, Japan), Fuminori Ito (Faculty of Agriculture, Kagawa University, Kagawa 761-0795) and Takeshi Kameyama (Fukken Limited, Co., Ltd., Hiroshima 732-0052, Japan). Argentine ant Linepithema humile which has invaded in Hiroshima Prefecture, unlike other native ant species, foraged during winter season whenever it was warm enough to be active. The foraging activity of Argentine ant depended upon the ground surface temperature. Argentine ant did not forage on the ground when ground surface temperature was below 10°C. Comparing the climatic condition of areas infested with Argentine ant also suggested that Argentine ant might need the warm period (in which temperature was over 10℃) for their establishment.

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神奈川県内の2ケ所の林地におけるフトミミズ類の生活史

内田智子, 金子信博

原稿種別: 本文
2004 年 74 巻 p. 35-45
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_35

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Life history of Megascolecidae earthworms in forest soils at Kanagawa, Japan. T., Uchida and N. Kaneko (Soil Ecology Research Group, Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Yokohama 240-8501, Japan). We studied earthworm populations at 2 sites in Manazuru (MFF) and Yokohama National University (YNU) in Kanagawa Prefecture. Two sub-sites are set at YNU; an ever-green forest (E) and a deciduous forest (D). At Manazuru, a protection forest for fish breeding (MFF) of ever-green forest was investigated. An earthworm population had a peak with biomass and density in rainy season from June to July both at YNU and MFF. Earthworm species with different vertical distribution had a different life cycle. The species living in the surface layer had a life cycle as follows; hatching occurred in April and the worms grew and reproduced after maturation in June to July, finally adult worms disappeared before the winter. Whereas the species living in the soil layer had different life cycle as follows; hatching occurred gradually between July and next April and they matured by July. Life cycle pattern was different between surface layer species and soil living species. However most species had their maximum growth and reproduction during June to July.

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『ミミズ-嫌われもののはたらきもの-』, ISBN4-486-01632-7, \2,000, (2003/12), 著者:渡辺弘之, 出版社:東海大学出版会(みみずの手帳)

松本貞義

原稿種別: 本文
2004 年 74 巻 p. 47-
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_47

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学会記事

原稿種別: 付録等
2004 年 74 巻 p. 48-
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_48

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「Edaphologia」投稿規定

原稿種別: 付録等
2004 年 74 巻 p. 49-50
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_49

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Editorial Board

原稿種別: 付録等
2004 年 74 巻 p. App3-
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_App3

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奥付

原稿種別: 付録等
2004 年 74 巻 p. App4-
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_App4

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CONTENTS

原稿種別: 表紙
2004 年 74 巻 p. Cover2-
発行日: 2004/02/28
公開日: 2017/07/20

DOIhttps://doi.org/10.20695/edaphologia.74.0_Cover2

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