文献类型： 外文期刊

作者： Li, Zhongyang ¹ ; Xie, Huiyu ² ; Peng, Zhiqi ³ ; Heino, Jani ⁴ ; Ma, Yu ² ; Xiong, Fangyuan ¹ ; Gao, Wenqi ¹ ; Xin, Wei ¹ ; Kong, Chiping ⁶ ; Li, Lekang ⁶ ; Fang, Lei ⁶ ; Wang, Haihua ⁸ ; Feng, Guangpeng ⁸ ; Wang, Beixin ³ ; Jin, Xiaowei ² ; Chen, Yushun ¹ ;

作者机构： 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China

2.China Natl Environm Monitoring Ctr, Beijing 100012, Peoples R China

3.Nanjing Agr Univ, Dept Entomol, Nanjing 210095, Jiangsu, Peoples R China

4.Univ Oulu, Geog Res Unit, POB 8000, Oulu 90014, Finland

5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

6.Jiujiang Inst Agr Sci, Jiujiang 332005, Jiangxi, Peoples R China

7.Beijing Normal Univ, Coll Water Sci, Beijing 100875, Peoples R China

8.Poyang Lake Fisheries Res Ctr Jiangxi Prov, Jiangxi Inst Fisheries Sci, Nanchang 330039, Jiangxi, Peoples R China

9.Huaiyin Normal Univ, Jiangsu Collaborat Innovat Ctr Reg Modern Agr & E, Huaian 223300, Peoples R China

10.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China

关键词： Hydrological modification; alpha and ( diversity; Land use; Water quality; Dams

期刊名称：WATER RESEARCH X （ 影响因子：8.2； 五年影响因子：8.1 ）

ISSN：

年卷期： 2024 年 25 卷

页码：

收录情况： SCI

摘要： Freshwater biodiversity is increasingly threatened by dams and many other anthropogenic stressors, yet our understanding of the complex responses of different biotas and their multiple facets remains limited. Here, we present a multi-faceted and integrated-indices approach to assess the differential responses of freshwater biodiversity to multiple stressors in the Yangtze River, the third longest and most dam-densely river in the world. By combining individual biodiversity indices of phytoplankton, zooplankton, periphyton, macroinvertebrates, and fish with a novel integrated aquatic biodiversity index (IABI), we disentangled the effects of hydrology, water quality, land use, and natural factors on both alpha and ( diversity facets in taxonomic, functional, and phylogenetic dimensions. Our results revealed that phytoplankton and fish species and functional richness increased longitudinally, while fish taxonomic and phylogenetic ( diversity increased but phytoplankton and macroinvertebrate ( diversity remained unchanged. Hydrology and water quality emerged as the key drivers of all individual biodiversity indices, followed by land use and natural factors, with fish and phytoplankton showed the strongest responses. Importantly, we found that natural, land use, and hydrological factors indirectly affected biodiversity by altering water quality, which in turn directly influenced taxonomic and phylogenetic IABIs. Our findings highlight the complex interplay of multiple stressors in shaping freshwater biodiversity and underscore the importance of considering both individual and integrated indices for effective conservation and management. We propose that our multi-faceted and integrated-indices approach can be applied to other large, dam-modified river basins globally.