Abstract
In this study, physical quantities (velocity, depth, light quantum, etc.) in riffle-pool structure were measured. Further, since riffle and pool is habitats for benthic animal, those areas were surveyed. The object of this study is to analyze and appreciate about river environment including ecosystem by means of these survey of physical environment and benthic community.
The field survey was performed at research point being compatible with riffle, fast rapid and pool. As a result of, the reached lights on river-bed surface was intense in riffle comparing with pool. Because of dispersions, the standard deviation of light quantum in riffle was larger than that in pool.
The results of benthic community survey were performed in April and August showed a diversity of specie in riffle. And the process of succession to the climax was observed by means of classification of benthic life style.
