气候变化领域集成服务门户(CCPortal): Mainstem-tributary linkages by mayfly migration help sustain salmonids in a warming river network

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DOI	10.1111/ele.12483
	Mainstem-tributary linkages by mayfly migration help sustain salmonids in a warming river network
	Uno H.; Power M.E.
发表日期	2015
ISSN	1461-023X
EISSN	1461-0248
卷号	18 期号:10
英文摘要	Animal migrations can link ecosystems across space. We discovered an aquatic insect that migrates between a river mainstem and its tributaries, and provides an important trophic subsidy for tributary predators. A mayfly, Ephemerella maculata, rears in a warm, sunlit productive river mainstem, then migrates as adults to cool, shaded unproductive tributaries where they oviposit and die. This migration tripled insect flux into a tributary for 1 month in summer. A manipulative field experiment showed that this E. maculata subsidy nearly tripled the growth of the young of the year steelhead trout (Oncorhynchus mykiss) in the recipient tributary over the summer months, and was more important than terrestrial invertebrate subsidies, which have been considered the primary food source for predators in small, forested creeks. By delivering food subsidies from productive but warming river mainstems to cool but food-limited tributaries, aquatic insect migrations could enhance resilience to cool-water predators in warming river networks. © 2015 John Wiley & Sons Ltd/CNRS.
英文关键词	Aquatic insect; Ecological resilience; Food web; Landscape; Migration; River network; Salmonid; Spatial connectivity; Subsidy; Warming
学科领域	aquatic community; connectivity; ecosystem resilience; field method; food web; landscape change; mayfly; migration; predator; predator-prey interaction; river system; salmonid; tributary; warming; Animalia; Ephemerella maculata; Ephemeroptera; Hexapoda; Invertebrata; Oncorhynchus mykiss; Salmonidae; animal; ecosystem; Ephemeroptera; food chain; growth, development and aging; Oncorhynchus mykiss; physiology; population migration; river; temperature; United States; Animal Migration; Animals; California; Ecosystem; Ephemeroptera; Food Chain; Oncorhynchus mykiss; Rivers; Temperature
语种	英语
scopus关键词	aquatic community; connectivity; ecosystem resilience; field method; food web; landscape change; mayfly; migration; predator; predator-prey interaction; river system; salmonid; tributary; warming; Animalia; Ephemerella maculata; Ephemeroptera; Hexapoda; Invertebrata; Oncorhynchus mykiss; Salmonidae; animal; ecosystem; Ephemeroptera; food chain; growth, development and aging; Oncorhynchus mykiss; physiology; population migration; river; temperature; United States; Animal Migration; Animals; California; Ecosystem; Ephemeroptera; Food Chain; Oncorhynchus mykiss; Rivers; Temperature
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118633
作者单位	Department of Integrative Biology, University of California Berkeley, Berkeley, CA 94720, United States
推荐引用方式 GB/T 7714	Uno H.,Power M.E.. Mainstem-tributary linkages by mayfly migration help sustain salmonids in a warming river network[J],2015,18(10).
APA	Uno H.,&Power M.E..(2015).Mainstem-tributary linkages by mayfly migration help sustain salmonids in a warming river network.Ecology Letters,18(10).
MLA	Uno H.,et al."Mainstem-tributary linkages by mayfly migration help sustain salmonids in a warming river network".Ecology Letters 18.10(2015).