During the spring of 1992, fifty‐two quantitative diatom samples were collected from twenty‐
eight rivers located in the Tokyo Metropolitan area, Japan, to study the response of the …

In order to evaluate simply the Japanese-type river water quality, a practicable method using
differentiating diatom groups is proposed. Japanese rivers are generally shorter, shallower …

Diatoms of the Achnanthidium minutissimum species complex are widely distributed taxa
believed to occur in different freshwater habitats from unpolluted oligotrophic to highly …

Bio-evaluating of surface waters is not a new approach but is becoming more important
since the application of the European Water Framework Directive (WFD). The present study …

This paper describes seven new Gomphonema species from the Himalaya and provides
information about their ecology with respect to water chemistry and habitat character …

Six species of the genus Achnanthidium Kütz. with straight terminal raphe fissures including
Achnanthidium caledonicum (Lange-Bert.) Lange-Bert., A. sieminska e Witkowski …

Valve development has been examined in Achnanthes minutissima var. saprophila H.
Kobayasi & Mayama. The formation of the raphid valve (RV) proceeds in the same …

El Río Viejo es afectado por las actividades agrícolas y ganaderas que se desarrollan en la
subcuenca. De este se seleccionaron 15 sitios en el Río Viejo para evaluar la calidad de …

Two diatoms previously reported by H. KOBAYASI from the Ara-kawa (Ara River), Japan,
were re-examined in detail using scanning electron microscopy. A new species, Navicula …

A moss diatom, Eunotia sparsistriata has been newly described from Mikura Island (Mikura-
jima), Japan. This species has very coarse transapical striae in the valve face, namely 4, 5–8 …