@techreport{oai:soar-ir.repo.nii.ac.jp:00016788,
 author = {佐々木,  邦博},
 month = {Mar},
 note = {Seasonal change of the butterfly community at the basin of the River Oguro in Nagano Prefecture was investigated and its environment was evaluated by structural analysis of the butter:tly community. twenty investigations were done along the road on the River Oguro of about 2.8 km using transect counts in the period from May 2nd to October 5th in 2000. Fifty.eight species of 9 family and 1316 individuals could be confirmed in this investigation and the mean individuals per one investigation was 65.8. Butterflies inhabiting in the coppice accounted for 44.8% and dominant species were Pieris melete，A rgynnis paphia and Parnassius glacialis. The average value of Simpson's diversity index was 7.06 ranging from 3.08 to 12.24. It became clear by analyzing the structure of the butterfly community using existence ratio of environmental stage (ER) that the environment was classi.fied into afforested stage. The grouping RI index method indicated that the species living in the heights and the coppice were still remained at the basin of the River Oguro., Article, 環境科学年報23:115-118(2001)},
 title = {天竜川流域における公園成立の特徴},
 year = {2001}
}