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题名: Downstream effects of the Three Gorges Dam on larval dispersal, spatial distribution, and growth of the four major Chinese carps call for reprioritizing conservation measures
作者: Song, Yiqing1, 2; Cheng, Fei1; Murphy, Brian R.3; Xie, Songguang1, 4
刊名: CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
发表日期: 2018
DOI: 10.1139/cjfas-2016-0278
卷: 75, 期:1, 页:141-151
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Fisheries ; Marine & Freshwater Biology
研究领域[WOS]: Fisheries ; Marine & Freshwater Biology
英文摘要: Larval drift and dispersal are critical processes that affect recruitment success for many riverine fishes. Hypolimnetic discharge from the Three Gorges Dam (TGD) lowers river temperature and reduces downstream nutrients, inducing distinct shifts in habitat conditions downstream of the dam. The inflow of major tributaries buffers these influences and creates physiochemical gradients according to the distance from the dam. We investigated the abundance, feeding, and growth of larvae of four major Chinese carps in three sections of the middle Yangtze River. Water temperature and transparency showed clear spatial gradients. Larvae in the river section closest to the dam tended to be lower in abundance and temporally delayed peak abundance and showed lower feeding intensity, poorer condition, and slower growth than those further from the dam. Our results demonstrate that physiochemical gradients influenced by the TGD have strong effects on abundance, feeding, and growth of the drifting larvae. We recommend that river sections farther from the TGD, particularly around the mouth of Poyang Lake, should become high-priority conservation areas to enhance protection of critical aquatic species.
关键词[WOS]: CORAL-REEF FISH ; SERIAL DISCONTINUITY CONCEPT ; YANGTZE-RIVER ; ENVIRONMENTAL-FACTORS ; HABITAT SUITABILITY ; INCREMENT FORMATION ; RECOVERY GRADIENT ; SEASONAL-CHANGES ; EASTERN BRAZIL ; GEZHOUBA DAM
语种: 英语
项目资助者: National Science Foundation of China(31570420) ; China Three Gorges Corporation ; Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes (Chinese Sturgeon Research Institute, China Three Gorges Corporation) ; Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences(Y12Z08) ; Acorn Alcinda Foundation, Lewes, Delaware, USA ; USDA National Institute of Food and Agriculture, Hatch Project(230537)
WOS记录号: WOS:000419137900014
ISSN号: 0706-652X
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/43674
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.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.Virginia Polytech Inst & State Univ, Dept Fish & Wildlife Conservat, Blacksburg, VA 24061 USA
4.Chinese Acad Sci, Huaian Res Ctr, Inst Hydrobiol, Huaian 223002, Jiangsu, Peoples R China
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