气候变化领域集成服务门户(CCPortal): Community fluctuations and local extinction in a planktonic food web

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DOI	10.1111/ele.12749
	Community fluctuations and local extinction in a planktonic food web
	Segura A.M.; Calliari D.; Lan B.L.; Fort H.; Widdicombe C.E.; Harmer R.; Arim M.
发表日期	2017
ISSN	1461-023X
EISSN	1461-0248
卷号	20 期号:4
英文摘要	Determining statistical patterns irrespective of interacting agents (i.e. macroecology) is useful to explore the mechanisms driving population fluctuations and extinctions in natural food webs. Here, we tested four predictions of a neutral model on the distribution of community fluctuations (CF) and the distributions of persistence times (APT). Novel predictions for the food web were generated by combining (1) body size–density scaling, (2) Taylor's law and (3) low efficiency of trophic transference. Predictions were evaluated on an exceptional data set of plankton with 15 years of weekly samples encompassing c. 250 planktonic species from three trophic levels, sampled in the western English Channel. Highly symmetric non-Gaussian distributions of CF support zero-sum dynamics. Variability in CF decreased while a change from an exponential to a power law distribution of APT from basal to upper trophic positions was detected. Results suggest a predictable but profound effect of trophic position on fluctuations and extinction in natural communities. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	English Channel; fluctuations; food web; macroecology; plankton; Station L4
学科领域	biological model; England; food chain; physiology; plankton; population dynamics; sea; species extinction; England; Extinction, Biological; Food Chain; Models, Biological; Oceans and Seas; Plankton; Population Dynamics
语种	英语
scopus关键词	biological model; England; food chain; physiology; plankton; population dynamics; sea; species extinction; England; Extinction, Biological; Food Chain; Models, Biological; Oceans and Seas; Plankton; Population Dynamics
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/118410
作者单位	Universidad de la República, Centro Universitario Regional Este, Rocha-Maldonado, Uruguay; Universidad de la República, Facultad de Ciencias, Montevideo, Uruguay; Universidad de la República, Physics Institute, Complex Systems Group, Montevideo, Uruguay; Electrical and Computer Systems Engineering, School of Engineering, Monash University, Bandar Sunway, 47500, Malaysia; Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, PL1 3DH, United Kingdom; Institut für Hydrobiologie und Fischereiwissenschaft, Universität Hamburg, Hamburg, Germany
推荐引用方式 GB/T 7714	Segura A.M.,Calliari D.,Lan B.L.,et al. Community fluctuations and local extinction in a planktonic food web[J],2017,20(4).
APA	Segura A.M..,Calliari D..,Lan B.L..,Fort H..,Widdicombe C.E..,...&Arim M..(2017).Community fluctuations and local extinction in a planktonic food web.Ecology Letters,20(4).
MLA	Segura A.M.,et al."Community fluctuations and local extinction in a planktonic food web".Ecology Letters 20.4(2017).