Abstract
1. A study of algal ecology was made in a waterfall “Ryuo-daki” at Tsukigasemura, Nara Prefecture, in August, 1956.2. The waterfall is regarded as a mosaic of some different environmental complexes and some different biotic communities.3. Five points which differ in conditions from each other were selected on the rock wall of the waterfall (Fig. 1), and their algal communities were studied (Table 1). The main factor controlling the difference between the communities selected is probably the rate of flow of water which supports the algal communities.4. Achnanthes crenulata GRUNOW which is a rare species in Japan was found in this waterfall, and was a dominant component of the algal communities at some parts. Besides a short note of its ecology, its morphology is also given.
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Schedule a callMore From: Japanese Journal of Limnology (Rikusuigaku Zasshi)
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