Diatoms from Lake Nojiri, Nagano Prefecture, Central Japan.

Abstract

Diatom assemblage in the sediment of Lake Nojiri was examined. A total of 245 taxa among 42 genera were recorded. All taxa, which occurred abundantly, were planktonic species, i. e. Fragilaria fasciculata, F crotonensis, Asterionella Formosa, Cyclotella radiosa, C. stelligera, Aulacoseira itarica.