globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12749
Scopus记录号: 2-s2.0-85013785078
论文题名:
Community fluctuations and local extinction in a planktonic food web
作者: Segura A.M.; Calliari D.; Lan B.L.; Fort H.; Widdicombe C.E.; Harmer R.; Arim M.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期:4
起始页码: 471
结束页码: 476
语种: 英语
英文关键词: English Channel ; fluctuations ; food web ; macroecology ; plankton ; Station L4
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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107634
Appears in Collections:气候减缓与适应

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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, Malaysia; Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth, United Kingdom; Institut für Hydrobiologie und Fischereiwissenschaft, Universität Hamburg, Hamburg, Germany

Recommended Citation:
Segura A.M.,Calliari D.,Lan B.L.,et al. Community fluctuations and local extinction in a planktonic food web[J]. Ecology Letters,2017-01-01,20(4)
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