Abstract
Presently, species diversity is widely used as evaluations of the effect of river works. Thus, basic species distribution data and research results focused on the species diversity are increasing. However, there are remarkably few studies on relationships between river development and biomass of the aquatic organisms. The aim of this study is to develop the spatial biomass prediction model of benthic invertebrate in the water system of Saba River.
Field surveys were conducted to understand the relation between hydraulic characteristics and biomass of benthic invertebrate, and we established GLM to predict the biomass using the hydraulic characteristics. The change amount of biomass of benthic invertebrate in mainstream of Saba River is predicted by using GLM and calculated hydraulic characteristics by fluid models. The result revealed that the total biomass of benthic invertebrate was reduced by the negative impact of water intake.
