气候变化领域集成服务门户(CCPortal): Bending the rules: exploitation of allochthonous resources by a top-predator modifies size-abundance scaling in stream food webs

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DOI	10.1111/ele.13147
	Bending the rules: exploitation of allochthonous resources by a top-predator modifies size-abundance scaling in stream food webs
	Perkins D.M.; Durance I.; Edwards F.K.; Grey J.; Hildrew A.G.; Jackson M.; Jones J.I.; Lauridsen R.B.; Layer-Dobra K.; Thompson M.S.A.; Woodward G.
发表日期	2018
ISSN	1461023X
卷号	21 期号:12
英文摘要	Body mass–abundance (M-N) allometries provide a key measure of community structure, and deviations from scaling predictions could reveal how cross-ecosystem subsidies alter food webs. For 31 streams across the UK, we tested the hypothesis that linear log-log M-N scaling is shallower than that predicted by allometric scaling theory when top predators have access to allochthonous prey. These streams all contained a common and widespread top predator (brown trout) that regularly feeds on terrestrial prey and, as hypothesised, deviations from predicted scaling increased with its dominance of the fish assemblage. Our study identifies a key beneficiary of cross-ecosystem subsidies at the top of stream food webs and elucidates how these inputs can reshape the size-structure of these ‘open’ systems. © 2018 John Wiley & Sons Ltd/CNRS
英文关键词	Allometric scaling; body size; brown trout; energetic subsidies; food webs; metabolic theory; stable isotopes; streams
语种	英语
scopus关键词	Salmo trutta; animal; ecosystem; fish; food chain; river; Animals; Ecosystem; Fishes; Food Chain; Rivers
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/121216
作者单位	Department of Life Sciences, Whitelands College, University of Roehampton, London, SW15 4JD, United Kingdom; Cardiff Water Research Institute, Cardiff School of Biosciences, Cardiff University, PO Box 915, Cardiff, CF10 3TL, United Kingdom; School of Biological and Chemical Sciences, Queen Mary University of London, London, E1 4NS, United Kingdom; Centre for Ecology and Hydrology, Wallingford, OX10 8BB, United Kingdom; Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, United Kingdom; Freshwater Biological Association, The Ferry Landing, Far Sawrey, Ambleside, Cumbria, LA22 OLP, United Kingdom; Grand Challenges in Ecosystems and the Environment, Department of Life Sciences, Imperial College London, Silwood Park Campus, Berkshire, SL5 7PY, United Kingdom; Game & Wildlife Conservation Trust, Burgate Manor, Fordingbridge, Hampshire, SP6 1EF, United Kingdom; Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Pakefield Road, Lowestoft, Suffolk, NR33 0HT, Unite...
推荐引用方式 GB/T 7714	Perkins D.M.,Durance I.,Edwards F.K.,et al. Bending the rules: exploitation of allochthonous resources by a top-predator modifies size-abundance scaling in stream food webs[J],2018,21(12).
APA	Perkins D.M..,Durance I..,Edwards F.K..,Grey J..,Hildrew A.G..,...&Woodward G..(2018).Bending the rules: exploitation of allochthonous resources by a top-predator modifies size-abundance scaling in stream food webs.Ecology Letters,21(12).
MLA	Perkins D.M.,et al."Bending the rules: exploitation of allochthonous resources by a top-predator modifies size-abundance scaling in stream food webs".Ecology Letters 21.12(2018).