Comparison of aquatic invertebrates among four small forest streams in Takatori Mountain, Shikoku, Japan

摘要

We compared the aquatic invertebrate assemblages among four small streams, two of which were covered with planted forests comprised of Japanese cypress and cedar, and the other two of which were covered with natural forests comprised mainly of Japanese cypress, fir, and hemlock. Genus richness and composition of aquatic invertebrates were different among four sites. The difference could not be explained only by the difference of forest vegetation. It was suggested that stream width and basin area have to be taken into consideration when the assemblage of aquatic invertebrates is compared among small streams.