The separated distribution of the two varieties of Achnanthes minutissima Kuetz. according to the degree of river water pollution.:According to the Degree of River Water Pollution
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The ecological characteristics of <I>Achnanthes</I> <I>minutissima</I> KUETZ. var, <I>saprophila</I> H. KOB. & MAYAM., reported as one of the most pollution-tolerant diatoms by the present authors in 1982, were investigated in detail in the river waters of Tokyo and vicinity. In contrast to the distribution of the nominate variety, var. <I>saprophila</I> was found only in heavily to excessively polluted waters and even occurred as dominant or subdominant taxon in some samples. Vigorous growth was observed in the strongly polluted stretch of the Minamiasa-kawa (Minamiasa River), as shown by cell numbers in a given area.
- 日本陸水学会の論文
日本陸水学会 | 論文
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