@article{oai:soar-ir.repo.nii.ac.jp:00010383, author = {Suttiprapan, Piyawan and Yamamoto, Shoko and Nakamura, Hiroshi}, issue = {4}, journal = {環動昆}, month = {Dec}, note = {Field studies were conducted in the Southern Japan Alps from June to September of 2001 in order to clarify the species composition and vertical distribution of ground beetles. Eleven survey sites ranging in altitude from 1000m to 2600m were selected at Mt. Senjo. In June of 2001, pitfall traps were set 3 times at survey sites from 1000m to 1400m in altitude, and from August to September of 2001, trap collection was carried out twice at altitudes from 1000m to 2600m. All traps were baited with a lactic acid beverage mixed with 70% ethyl alcohol. A total of 2337 individuals comprising 37 species of ground beetles of Carabidae and Brachinidae were collected in this study. The dominant species found in the June collections were Pterostichus subovatus (44.9% of the total) and Leptocambus procerulus (38.6% of the total). The 4 most numerous species of the individuals collected in August and September were Leptocarabus arboreus horioi, Trigonognatha aurescens, Pterostichus brunneipennis akaishicus and Synuchus cycloderus, which represented 76.3% (1649 individuals) of the total collected. The vertical niche breadths of ground beetles were calculated using the data of the August and September collections. The 5 species which showed the highest values for niche breadth were S. cycloderus, Pt. brunneipennis akaishicus, L. arboreus horioi, P. aeneola and Synuchus melantho. S. cycloderus showed a wide vertical distribution from 1000 m to 2400 m and also showed the highest value of niche breadth. Species of high relative abundance had wide niche breadth though we found no relationship between niche breadth and relative abundance among species of low abundance. The correlation coefficient between niche breadth and mean altitude of the vertical distribution indicated a slightly positive relationship. We include a discussion of the selection of appropriate species to represent the mountainous environment., 南アルプスにおける地上性甲虫類の群集構造と標高に対するニッチ幅をあきらかにするため, 2001年6月から9月にかけて調査を行った. 仙丈ヶ岳周辺の標高1000mから2600mの範囲に, 11の調査地点を設けた. 乳酸飲料と70%エチルアルコールを入れたトラップによる採集は, 2001年6月には標高1000mから1400mの7調査地点で3回, 7月から9月には標高1000mから2600mの範囲で2回行われた. 本調査で合計37種2337個体のオサムシ料とクビボソゴミムシ料の地上性昆虫が採集された. 6月の調査での優占種は, マルガタナガゴミムシPterostichus subovatus(全体の44.9%)とクロナガオサムシLeptocarabus procerulus(全体の38.6%)であった. 8月と9月の調査での優占種は, サンプククロナガオサムシLeptocarabus arboreus horioi, キンイロオオゴミムシTrigonognatha aurescens, ハネアカナガゴミムシPterostichus brunneipennis akaishicusおよびクロツヤヒラタゴミムシSynuchus cycloderusで,これら4種で1649個体,全体の76.3%を占めていた. 8月と9月の調査結果をもとに標高に対するニッチ幅が計算され, クロツヤヒラタゴミムシ, ハネアカナガゴミムシ,サンプククロナガオサムシ, ホソヒラタゴミムシPristosia aeneolaおよびコクロツヤヒラタゴミムシSynuchus melanthoが高い値を示した.特にクロツヤヒラタゴミムシは, 標高1000mから2400mまでの広い垂直分布を示した. 捕獲個体数の多い種は, 広いニッテ幅を持っていた. ただし, 個体数の少ない種では, ニッチ幅と捕獲数の相関はみられなかった. ニッチ幅と分布域の平均標高との間には, 弱い正の相関が見られた. これらの結果から, 山岳環境を代表する指標種について考察した., Article, 環動昆 17(4): 143-152 (2006)}, pages = {143--152}, title = {Species composition and the vertical niche breadth of ground beetles(Carabidae, Brachinidae) in the Southern Japan Alps}, volume = {17}, year = {2006} }