气候变化领域集成服务门户(CCPortal): Evaluating the cascade dam construction effects on endemic fish habitat and population status in spawning sites of Lancang River (in Tibet), China

CCPortal

DOI	10.1016/j.ecolmodel.2023.110450
	Evaluating the cascade dam construction effects on endemic fish habitat and population status in spawning sites of Lancang River (in Tibet), China
	Wang, Qianqian; Li, Pengcheng; Zhang, Wenming; Cong, Nan; Xi, Yuqian; Xiao, Lirong; Wang, Yihang; Yao, Weiwei
发表日期	2023
ISSN	0304-3800
EISSN	1872-7026
卷号	483
英文摘要	Cascade dam constructions will alter the habitat of spawning sites and affect fish population in the Lancang River basin. This paper examines the impacts of cascade dam construction on four spawning sites, focusing on two codistributed and endemic fish species: Schizothorax prenanti and Schizothorax davidi. An ecohydraulic modeling framework that combined hydro-morphodynamic, habitat, and population models was used to investigate changes in habitat quality and fish population under two scenarios: no-dam and with-dam. Fish habitat quality was evaluated using the habitat suitability index, and population fluctuations were assessed by the abundance and density of fish populations at all life stages. The simulation results indicated that cascade dam construction would fragment the spawning site habitat in the tailwater zone of the main stream and result in a decrease in fish population abundance and density. Conversely, spawning site habitats in backwater zone of tributaries would improve, and fish population abundance and density would increase. Additionally, the simulation results showed that the magnitude of fish population variations varied by species and life stages. These results highlight the different responses of spawning site location, fish species, and life stages to dam construction, which can help identify areas of the habitat with higher potential for finer-scale endemic fish conservation and recovery efforts. This study provides a comprehensive framework tool for fish ecological evaluation in dammed rivers, which has the potential to assist decision-makers involved in river ecosystem ecological conservation.
关键词	Cascade dam Spawning site Habitat suitability Fish population Lancang river
英文关键词	SWIMMING PERFORMANCE; MIDDLE REACH; RESERVOIR; MODEL; SUITABILITY; HYDROPOWER; FLOW; CONNECTIVITY; UPSTREAM; MOVEMENT
WOS研究方向	Ecology
WOS记录号	WOS:001037303200001
来源期刊	ECOLOGICAL MODELLING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283541
作者单位	Sichuan University; University of Alberta; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS
推荐引用方式 GB/T 7714	Wang, Qianqian,Li, Pengcheng,Zhang, Wenming,et al. Evaluating the cascade dam construction effects on endemic fish habitat and population status in spawning sites of Lancang River (in Tibet), China[J],2023,483.
APA	Wang, Qianqian.,Li, Pengcheng.,Zhang, Wenming.,Cong, Nan.,Xi, Yuqian.,...&Yao, Weiwei.(2023).Evaluating the cascade dam construction effects on endemic fish habitat and population status in spawning sites of Lancang River (in Tibet), China.ECOLOGICAL MODELLING,483.
MLA	Wang, Qianqian,et al."Evaluating the cascade dam construction effects on endemic fish habitat and population status in spawning sites of Lancang River (in Tibet), China".ECOLOGICAL MODELLING 483(2023).