Abstract
Diatom assemblages from the Kurozo-moor were investigated. The moor was developed in a valley, and was scattered with Sphagnum bogs. Samples were collected from ponds, bogs, fallow paddy fields, and a river in the moor in September 1994, March 1995 and August 1995. As the result of taxonomic studies of these sample,105 taxa belonging to 27 genera were identified. Aulacoseira subarctica, A. laevissima, Eunotia curvata, Frustulia rhomboides, Rhopalodia acuminata, and Tabellaria flocculosa were abundant in the moor. A large number of taxa belonging to the genera Navicula and Pinnularia was also found, though most of them were not abundant. Diatom assemblages in the river were quite different from the others.