酪農地帯・別海町の地表歩行性甲虫類とその分布

概要

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Sampling of ground beetles was made monthly from May to September 1981, at 34 stations in a dairy area of Bekkai Village, Hokkaido, Northern Japan. The results are : 1) In total 1891 individuals of 45 species were obtained. The dominant species' were Cardbus granulatus yezoensis, C. opaculus, Poecilus caerulesens, Agonum ipressum, Amara communis, Pterostichus haptoderoides japanensis, P. adstricutus, Chlaenius pallipes, Silpha perforata venatoria, Geotrupes laevistriatus and Phaleromela subhumeralis. 2) The seasonal fluctuation of niche breadth was unimodal in G. laevistriatus and P. adstrictus, but bimodal in S. perforata venatoria, P. caerulescens, C. granulatus yezoensis and C. pallipes. 3) The interspecific niche overlap seasonally changed. In the summer the beetles could be divided into two types, sylvan species (C. granulatus yezoensis, P. adstrictus, P. orientalis, S. perforata venaioria, and G. laevistriatus) and openland species (P. caerulescens, P. haptoderoides japanensis and Chlaeniuw pallipes). 4) According to the cluster analysis of sampling sites, the faunal difference between openland and forest habitats was remarkable after the foliage of forests developed well.
北海道大学の論文
1983-12-20