Ecological analysis of flow regime and its relation to fish species richness in rivers at global scale
1. Introduction The current species extinction rate is estimated to be 100 to 1000 times higher than what could be considered natural. This situation has transgressed the boundaries that kept the stability of earth environment and was suitable for the development and thriving of human civilizations (Rockstrom et al, 2009). Especially, biodiversity in riverine ecosystem has declined faster than those in terrestrial and marine systems over the past 30 years (Jenkins, 2003). Such long-term trend has been caused by multiple anthropogenic impacts, such as flow regime change, habitat fragmentation, channel alteration, water pollution, and invasive species, which endangered 65％ of worlds river habitats and put thousands of aquatic wildlife species at risk (Vorosmarty et al, 2010). Flow regime is changing temporally because of global climate change and increasing human water use, although it is the primary determinant of the structure and function of aquatic and riparian ecosystems (Richter et al., 1996; Poff et al, 2010). From the perspective of aquatic ecosystem protection and water resource management, ecological analysis of flow regime and considerations of its relationship to biodiversity in rivers have been one of research focuses recently.
Yuichi IWASAKI Pengzhe SUI Chihiro YOSHIMURA
Department of Civil Engineering, Graduate School of Science and Engineering,Tokyo Institute of Technology, Japan
国际会议
北京
英文
129-130
2011-11-24（万方平台首次上网日期，不代表论文的发表时间）