堆積物試料の乾燥による放散虫殻の破損について

概要

論文の詳細を見る
Radiolarian concentration and their faunal composition are compared between each pair of dried and wet materials of 24 sediment core samples from the Japan Sea. The number of radiolarian individuals in the dried material was generally smaller than that in the wet one of the same sample, indicating destruction due to contraction of the sediment during the drying process. Such a decrease attains up to 95%, and is 48% in average. Each species has a different destruction according to its resistance against contraction. Ceratospyris borealis with a fragile shell structure is the weakest among the major five species in the cores studied. Faunal composition is altered by drying especially for the assemblage dominated by such a fragile species. In this report, a technique for desiccation of sediment samples is introduced for quantitative radiolarian analysis.
1998-12-20