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| Hasegawa,Motohiro; Sugiura,Shinji; Ito,Masamichi T.; Yamaki,Aska; Hamaguchi,Keiko; Kishimoto,Toshio; Okochi,Isamu. |
| On Chichijima, one of the Ogasawara (Bonin) Islands located in the Western Pacific Ocean, land snails have declined, the suggested cause being predation pressure by an invasive flatworm (Platydemus manokwari). Soil fauna were investigated in areas where the snail survives, and where it has become extinct. Much of the fauna, dominated by introduced earthworms and ants, was undiminished, however, one undescribed but endemic carabid (Badister sp.), which selectively feeds on land snails, was absent in snail-extinct areas. The invasive flatworm P. manokwari has been reported to feed also on the carcasses of earthworms, as well as on live snails, and is therefore expected to occur in most parts of Chichijima Island. Among other groups, the density of isopods... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Badister; Platydemus manokwari; Formicidae; Isopoda; Oligochaeta; Platyhelminthes. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800014 |
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| Hasegawa,Motohiro; Fukuyama,Kenji; Makino,Shun'ichi; Okochi,Isamu; Tanaka,Hiroshi; Okabe,Kimiko; Goto,Hideaki; Mizoguchi,Takeo; Sakata,Tadashi. |
| Collembolan communities in conifer plantations (Japanese cedar, Cryptomeria japonica) and secondary deciduous broad-leaved forests of varying ages were investigated to determine the extent to which forest conversion (broad-leaved to coniferous) affects the species richness and assemblage composition of Collembola in central Japan. Density and total species richness of Collembola not differed between the broad-leaved and cedar forests except immediately after clear-cutting. The amount of forest-floor organic matter was larger in cedar forests and positively correlated with the species richness of detritus feeders. Species richness of fungal feeders and sucking feeders positively correlated with the species richness of forest-floor plants. There was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Japanese cedar; Species composition; Feeding habit; Undergrowth. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800012 |
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