Can water level management, stock enhancement, and fishery restriction offset negative effects of hydrological changes on the four major Chinese carps in China's largest freshwater lake?

doi:10.1016/j.ecolmodel.2019.03.020

	Can water level management, stock enhancement, and fishery restriction offset negative effects of hydrological changes on the four major Chinese carps in China's largest freshwater lake?
	Wang, Yuyu 1; Kao, Yu-Chun 2; Zhou, Yangming 3; Zhang, Huan 4; Yu, Xiubo 5; Lei, Guangchun 1
刊名	ECOLOGICAL MODELLING
	2019-07-01
卷号	403 页码:1-10
关键词	Poyang Lake fisheries Three Gorges Dam Habitat connectivity Water level management Stock enhancement The four major Chinese carps
ISSN号	0304-3800
DOI	10.1016/j.ecolmodel.2019.03.020
通讯作者	Lei, Guangchun(guangchun.lei@foxmail.com)
英文摘要	Habitat degradation and fragmentation have been the leading cause of reduced fishery yields in many freshwater ecosystems around the world. In Poyang Lake, the largest freshwater lake in China, recent hydrological changes driven by the operation of Three Gorges Dam (TGD) and drought have caused a drastic loss of fishery resources. In response, managers have planned to build a sluice at Poyang Lake's outlet to manage the lake's water level and, as the sluice will unavoidably limit the river-lake migration of many fishery species, managers have also proposed implementing stock enhancement programs and restricting fisheries to sustain fisheries in the lake. In this study, we built and implemented a Poyang Lake Ecopath with Ecosim model to evaluate effects of water level management, stock enhancement, and fishery restriction on biomass of the four major Chinese carps: grass carp (Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix), bighead carp (H. nobilis), and black carp (Mylopharyngodon piceus), of which all are river-lake migratory and important to fisheries. Results showed that the total biomass of the four major Chinese carps could increase with increases in water level, increases in stocking biomass, and decreases in fishing pressure. However, even in the best management effort scenario (i.e., highest water level, highest stocking biomass, and no fishing), simulated total biomass of the four major Chinese carps was still 16% lower than the biomass estimate in 2000, three years before the operation of TGD. These results suggest that a combination of managing water level, stocking, and restricting fisheries can substantially offset negative effects of hydrological changes on the four major Chinese carps, but may not be enough to restore the biomass of the four major Chinese carps to high levels that had occurred before the operation of TGD, because of the blockage of river-lake connectivity by the Poyang Lake sluice.
资助项目	National Key Research & Development Program of China[2017YFC0405303] ; Poyang Lake Model Project[PJB201701] ; National Natural Science Foundation of China[41301077] ; National Natural Science Foundation of China[31700403] ; National Natural Science Foundation of China[41561105]
WOS关键词	YANGTZE-RIVER BASIN ; POYANG LAKE ; FOOD-WEB ; INLAND FISHERIES ; SHALLOW LAKE ; ENERGY FLOWS ; BOTTOM-UP ; TOP-DOWN ; ECOSYSTEM ; BIODIVERSITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000471360900001
资助机构	National Key Research & Development Program of China ; Poyang Lake Model Project ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/58818]
专题	中国科学院地理科学与资源研究所
通讯作者	Lei, Guangchun
作者单位	1.Beijing Forestry Univ, Sch Nat Conservat, Beijing 10083, Peoples R China 2.Michigan State Univ, Ctr Syst Integrat & Sustainabil, Dept Fisheries & Wildlife, E Lansing, MI 48823 USA 3.Jiangxi Normal Univ, Sch Geog & Environm, Nanchang 330022, Jiangxi, Peoples R China 4.Nanchang Univ, Sch Life Sci, Key Lab Poyang Lake Environm & Resource Utilizat, Nanchang 330031, Jiangxi, Peoples R China 5.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yuyu,Kao, Yu-Chun,Zhou, Yangming,et al. Can water level management, stock enhancement, and fishery restriction offset negative effects of hydrological changes on the four major Chinese carps in China's largest freshwater lake?[J]. ECOLOGICAL MODELLING,2019,403:1-10.
APA	Wang, Yuyu,Kao, Yu-Chun,Zhou, Yangming,Zhang, Huan,Yu, Xiubo,&Lei, Guangchun.(2019).Can water level management, stock enhancement, and fishery restriction offset negative effects of hydrological changes on the four major Chinese carps in China's largest freshwater lake?.ECOLOGICAL MODELLING,403,1-10.
MLA	Wang, Yuyu,et al."Can water level management, stock enhancement, and fishery restriction offset negative effects of hydrological changes on the four major Chinese carps in China's largest freshwater lake?".ECOLOGICAL MODELLING 403(2019):1-10.