瀬淵構造を持つ河川区間における物理環境類型と水生昆虫分布との比較

抄録

We have surveyed the dependency of the distribution of mass and taxa of benthic insects on flow in an area of a river which contains riffle-pool structure. The area was classified into several clusters in terms of flow character and the distribution pattern of benthic insects, independently. Flow pattern was generated by numerical simulation and the distribution of benthic insects was represented by the results of field survey. Two classifications seem to correspond well. This can be a first step to presume the distribution of benthic insects by hydrodynamic simulation.