<国立科博専報>南アルプス仙丈ケ岳におけるササラダニ類の垂直分布

概要

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Oribatid communities were investigated qualitatively at 17 stations along the ridge from the top of Mt. Senjo (3,032 m) to the Kitazawa Pass (2,040m) in the South Japanese Alps. The oribatid communities above the forest line (2,710m) were characterized by the presence of Brachychochthonius berlesei, Niphocepheus nivalis, Diapterobates sp. C, Allomycobates lichenis and Neoribates sp. C, while those below the forest line by the presence of Liacarus nitens, Carabodes rimosus, Melanozetes meridianus, Ceratozetes sp. C, etc., though the habitat areas of these 2 groups of mites were somewhat overlapped near the forest line. In spite of the difference in vegetation the oribatid communities above the forest line showed no definite difference from one another. They are however, quite different from the oribatid communities above the forest line of Mt. Fuji, having no species in common. Brachychochthonius berlesei (WILLMANN), Hermannia gibba (C.L. KOCH) and Camisia biverrucata (C.L. KOCH) were found for the first time from Japan.