Abstract
The taxonomical and ecological study on the diatom vegetation of paddy fields was done by authors in July 1983 in the vicinity of Sakurai City, Nara Prefecture. From these peculiar inlandwaters were enumerated the 53 forms of diatom, belonging to 17 genera. The 16 forms among them seem to belong to the brackish species. The dominant or subdominant species of the community are represented by Navicula pupula, Nitzschia palea, and Surirella angustata.
