森林における樹上節足動物相 : I.ヒノキ人工林における, 密度, 現存量, 及び群集構成の季節変動に関する予備調査

概要

論文の詳細を見る
To acquire fundamental knowledge of the dynamics of an arboreal arthropod community in a forest ecosystem, five surveys were carried out from Oct. 6,1979 to May 11,1981 by the smoking method, using permethrin, in a 24-year-old Chamaecyparis obtusa plantation. The collected arthropods were composed of animals belonging to from 13 to 16 orders. Density of the total arthropods ranged about 1200 to 2400 inds./m^2,and it reached its maximum in Nov. 1980,mainly due to the increase of Acarina. The total biomasses, whose main component was Lepidopteran larvae biomass, fluctuated between about 70 and 180 mg d.w./m^2,and reached their maximum in July 1980. Various patterns of seasonal fluctuations both in individual numbers and biomass were observed among the order groups. Acarina and Collembola were overwhelmingly dominant groups in numbers, and they occupied 60-95% of the total arthropod numbers throughout the surveys. Lepidopteran larvae were the most abundant group, occupying 20-63% of the total arthropod biomasses. Washing the trap sheets with appropriate liquids after fumigation was suggested to be one of the key helps in the exact collection of the arboreal microarthropods, such as Acarina.
日本生態学会の論文
1983-12-30