Relationship between flow regime and river faunal composition: A large-scale analysis of discharge and faunal data

2016 Fiscal Year Final Research Report

• Project/Area Number: 26340091
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental and ecological symbiosis
• Research Institution: Ehime University
• Principal Investigator: MIYAKE Yo 愛媛大学, 理工学研究科(工学系), 准教授 (90345801)
• Co-Investigator(Renkei-kenkyūsha): INOUE Mikio 愛媛大学, 大学院理工学研究科, 教授 (10294787) ; WATANABE Kozo 愛媛大学, 大学院理工学研究科, 准教授 (80634435)
• Research Collaborator: YOSHIMURA Kento ; OKADA Yusei ; IZUMI Teppei ; WATANABE Yuya ; MUKUDA Yuki
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 生態工学 / 河川生態学 / 群集生態学 / 大規模データ解析 / 物理的攪乱 / 流量レジーム / 河川性底生動物 / 河川性魚類

Outline of Final Research Achievements

We aimed to elucidate the relationship between flow regime and river faunal composition across Japanese rivers. Our results showed that the duration of high flow events and the magnitude of spring flood have strong influence on the community structure of stream-dwelling invertebrate and fish in Japanese rivers. We concluded that environmental flow management, such as improvement of dam operation and mitigation of the impact of human land use, is essential for river ecosystem conservation.

Free Research Field

生態工学，生態学，生態系修復・整備，土木環境システム