Patterns of Benthic Insect Assemblages in Relation to Riparian Vegetation in a Small Stream, Northern Hokkaido, Japan.
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概要
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We compared benthic insect assemblages among three reaches with different riparian conditions (forest, transitional, and grassland) in a small stream flowing through forest to grassland in northern Hokkaido, Japan. Total density was significantly higher in the transitional and the grassland reaches than in the forest reach in both summer and fall. The number of taxa was significantly higher in the transitional and the grassland reaches than in the forest reach in summer. The density of shredders was significantly higher in the forest and the transitional reaches than in the grassland reach in fall. On the other hand, the density of collector-gatherers, collector-filterers, and predators were significantly higher in the transitional and the grassland reaches than in the forest reach in both summer and fall. The distribution of benthic assemblage types classified by a cluster analysis also corresponded to the three riparian types.
- 日本陸水学会の論文
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