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Longitudinal recovery gradients of drifting larval fish assemblages in the middle reach of the Yangtze River: impact of the Three Gorges Dam and conservation implementation
Song, Yiqing1,2; Cheng, Fei1; Ren, Peng1; Wang, Zhen1; Xie, Songguang1,3
2019-12-01
Source PublicationCANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
ISSN0706-652X
Volume76Issue:12Pages:2256-2267
Abstract

Drifting larval fish assemblages were investigated at three sections in the middle reach of the Yangtze River downstream of the Three Gorges Dam to reveal recovery gradients and to identify the major environmental factors influencing their temporal and spatial patterns. Larval fish in the river section closest to the dam showed lower abundance, later occurrence, narrower temporal niche breadth, and more pairs of dominant species with high niche overlap than those further from the dam. Water temperature, transparency, and discharge significantly influenced the larval fish assemblages. They showed longitudinal gradients of increased water temperature, decreased transparency, and increased discharge in a downstream direction. Our results suggested that hypolimnetic and clean water discharge from the dam heavily impacted larval fish assemblage in the river section near the dam. With an increased distance to the dam and the input of some major tributaries, this impact was gradually buffered, thus forming the longitudinal recovery gradients. We suggest that priority for conservation should shift from river sections closer to the dam to those further from the dam.

DOI10.1139/cjfas-2018-0409
Indexed BySCI
Language英语
WOS Research AreaFisheries ; Marine & Freshwater Biology
WOS SubjectFisheries ; Marine & Freshwater Biology
WOS IDWOS:000496731300009
WOS KeywordMAJOR CHINESE CARPS ; LIFE-HISTORY ; ENVIRONMENTAL-FACTORS ; FLOOD PLAINS ; BIODIVERSITY ; PATTERNS ; HABITAT ; CONNECTIVITY ; REPRODUCTION ; IMPOUNDMENT
PublisherCANADIAN SCIENCE PUBLISHING
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35280
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorXie, Songguang
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, Huaian Res Ctr, Key Lab Sustainable Fisheries & Environm Protect, Huaian 223002, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Song, Yiqing,Cheng, Fei,Ren, Peng,et al. Longitudinal recovery gradients of drifting larval fish assemblages in the middle reach of the Yangtze River: impact of the Three Gorges Dam and conservation implementation[J]. CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES,2019,76(12):2256-2267.
APA Song, Yiqing,Cheng, Fei,Ren, Peng,Wang, Zhen,&Xie, Songguang.(2019).Longitudinal recovery gradients of drifting larval fish assemblages in the middle reach of the Yangtze River: impact of the Three Gorges Dam and conservation implementation.CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES,76(12),2256-2267.
MLA Song, Yiqing,et al."Longitudinal recovery gradients of drifting larval fish assemblages in the middle reach of the Yangtze River: impact of the Three Gorges Dam and conservation implementation".CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES 76.12(2019):2256-2267.
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