Abstract
112 diatom taxa were identified in sediment cores from Sawano-ike Pond, the water of which is weakly acidic as well as low in electric conductivity. They belong to the following genera: Aulacoseira (8), Brachysira (6), Brevisira (1), Caloneis (2), Chamaepinnularia (1), Craticula (2), Discostella (1), Encyonema (4), Encyonopsis (2), Eunotia (25), Fallacia (1), Fragilaria (2), Frustulia (3), Kobayasiella (2), Luticola (1), Navicula (2), Naviculadicta (1), Neidium (5), Nitzschia (3), Peronia (1), Pinnularia (22), Sellaphora (4), Stauroneis (6), Stenopterobia (2), Surirella (4), Tabellaria (1).
