DOI: 10.1111/ele.12483
Scopus记录号: 2-s2.0-84941023881
论文题名: Mainstem-tributary linkages by mayfly migration help sustain salmonids in a warming river network
作者: Uno H. ; Power M.E.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2015
卷: 18, 期: 10 起始页码: 1012
结束页码: 1020
语种: 英语
英文关键词: Aquatic insect
; Ecological resilience
; Food web
; Landscape
; Migration
; River network
; Salmonid
; Spatial connectivity
; Subsidy
; Warming
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107862
Appears in Collections: 气候减缓与适应
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作者单位: Department of Integrative Biology, University of California Berkeley, Berkeley, CA, United States
Recommended Citation:
Uno H.,Power M.E.. Mainstem-tributary linkages by mayfly migration help sustain salmonids in a warming river network[J]. Ecology Letters,2015-01-01,18(10)