气候变化领域集成服务门户(CCPortal): Identifying minimum freshwater habitat conditions for an endangered fish using life cycle analysis

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DOI	10.1111/csp2.13124
	Identifying minimum freshwater habitat conditions for an endangered fish using life cycle analysis
	Polansky, Leo; Mitchell, Lara; Nobriga, Matthew L.
发表日期	2024
EISSN	2578-4854
起始页码	6
结束页码	5
卷号	6 期号:5
英文摘要	Identifying the most important factors affecting population growth in animal life cycles is an important tool of species conservation. Delta Smelt (Hypomesus transpacificus), an annual fish endemic to the San Francisco Estuary in California (USA), has been provided legal protection since 1993 but 30 years later exists in a conservation-reliant state on the brink of extinction. Despite considerable controversies about what factors are most responsible for the species' decline, no population growth rate sensitivity comparisons between the most important factors regulating growth have been done. Nor has anyone attempted to quantitatively identify habitat conditions needed to support positive population growth. We developed a set of stage-structured population models to link habitat indices regulating recruitment of new generations of fish as they metamorphosed into juveniles and the subsequent survival of those fish over several seasons until they reached adulthood. These models are used to quantify drivers of growth rate variation over 30 years. Several complimentary sensitivity analyses indicated freshwater outflow to the estuary during summer had the largest potential to change population growth. Multiple habitat metrics (e.g., food availability, temperature) influencing recruitment and life stage specific survival rates across different seasons interacted in nonlinear ways to determine habitat conditions and water management targets associated with positive population growth. We discuss the implications for freshwater management, Delta Smelt conservation, and the challenges climate change poses for co-implementation of these two societal priorities.
英文关键词	climate change; Delta smelt; endangered species; Hypomesus transpacificus; pareto frontier; population viability analysis; state-space model; water
语种	英语
WOS研究方向	Biodiversity & Conservation
WOS类目	Biodiversity Conservation
WOS记录号	WOS:001206346300001
来源期刊	CONSERVATION SCIENCE AND PRACTICE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288750
作者单位	United States Department of the Interior; US Fish & Wildlife Service; United States Department of the Interior; US Fish & Wildlife Service
推荐引用方式 GB/T 7714	Polansky, Leo,Mitchell, Lara,Nobriga, Matthew L.. Identifying minimum freshwater habitat conditions for an endangered fish using life cycle analysis[J],2024,6(5).
APA	Polansky, Leo,Mitchell, Lara,&Nobriga, Matthew L..(2024).Identifying minimum freshwater habitat conditions for an endangered fish using life cycle analysis.CONSERVATION SCIENCE AND PRACTICE,6(5).
MLA	Polansky, Leo,et al."Identifying minimum freshwater habitat conditions for an endangered fish using life cycle analysis".CONSERVATION SCIENCE AND PRACTICE 6.5(2024).