文献类型： 外文期刊
作者： Chen, Meiling 1 ; Liang, Yangyang 4 ; Cheng, Xinyu 1 ; Wang, Jun 2 ; Ding, Liuyong 2 ; Huang, Minrui 2 ; Wang, Guojing 2 ; Tao, Juan 2 ; Ding, Chengzhi 2 ;
作者机构： 1.Yunnan Univ, Sch Ecol & Environm Sci, Kunming 650500, Peoples R China
2.Yunnan Univ, Yunnan Key Lab Int Rivers & Transboundary Ecosecur, Kunming 650500, Peoples R China
3.Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming 650500, Peoples R China
4.Anhui Acad Agr Sci, Fisheries Res Inst, Hefei 230001, Peoples R China
5.Zhaotong Univ, Agron & Life Sci Dept, Zhaotong 657005, Peoples R China
关键词： Dam; Riverine fish; Functional traits; Habitats; Reproductive strategies; Global synthesis
期刊名称：HYDROBIOLOGIA （ 影响因子：2.6； 五年影响因子：2.6 ）
ISSN： 0018-8158
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Dams are undoubtedly a primary threat to global freshwater fishes. However, how fish functional traits respond to dams at the global scale remains poorly understood, which hinders a general understanding of related ecological processes, conservation, and management. By synthesizing fish data from 4040 relevant publications, this study investigates the species compositional and functional differences before and after dam construction, aiming to obtain general fish response patterns to dams and to propose pertinent conservation suggestions. The mean values of body size and trophic level of the occurrence-increased (OI) fishes and occurrence-decreased (OD) fishes were found to be larger than those of global freshwater fishes obtained from FishBase, respectively. In terms of mouth orientation, most OI fishes have terminal mouths, while a large proportion of the OD fishes have inferior mouths. The sensitive functional traits that respond to dams are habitat preferences and reproductive traits because the OI fishes are mainly lentic-adapted, warm-water, non-migratory, and produce demersal eggs, while the majority of the OD fishes are lotic-adapted, cold-water, migratory, and produce floating eggs. These results indicate that functional trait-based evaluations are essential for predicting the impacts of dam development on fish assemblages and guiding global biodiversity conservation, management, and sustainability.
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