Riku Oyama, Tatsuro Sato, Hidetaka Ichiyanagi, H. Hayashi, Tomoko Minagawa, Jun Nakajima, Y. Shimatani
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引用次数: 0
Abstract
Micro-hydropower considered to have a small environmental load, but since a water abstraction reach exists, it is necessary to evaluate the impact on the river ecosystem correctly. In this study, the influence of water abstraction by micro hydropower was quantitatively evaluated for each habitat type of mountain streams using benthos as a sensitive index. As a result of field investigation, in the Kaji River, the influence on the benthic animal population, the number of taxonomic groups, and the community structure by water abstraction were not statistically recognised in all mountain stream habitats. In the Kamo River, the number of benthic animals and the number of taxonomic groups decreased in the water abstraction reach in some habitats, including step, cascade, rapid and stagnation.
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