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DOI10.1111/ele.12394
A simple stochastic model for complex coextinctions in mutualistic networks: Robustness decreases with connectance
Vieira M.C.; Almeida-Neto M.
发表日期2015
ISSN1461-023X
EISSN1461-0248
卷号18期号:2
英文摘要Understanding and predicting species extinctions and coextinctions is a major goal of ecological research in the face of a biodiversity crisis. Typically, models based on network topology are used to simulate coextinctions in mutualistic networks. However, such topological models neglect two key biological features of species interactions: variation in the intrinsic dependence of species on the mutualism, and variation in the relative importance of each interacting partner. By incorporating both types of variation, we developed a stochastic coextinction model capable of simulating extinction cascades far more complex than those observed in previous topological models. Using a set of empirical mutualistic networks, we show that the traditional topological model may either underestimate or overestimate the number and likelihood of coextinctions, depending on the intrinsic dependence of species on the mutualism. More importantly, contrary to topological models, our stochastic model predicts extinction cascades to be more likely in highly connected mutualistic communities. © 2014 John Wiley & Sons Ltd/CNRS.
英文关键词Complexity-stability; Extinction cascades; Horizontal cascades; Network disassembly; Network robustness; Pollination; Seed dispersal; Simulation model; Stochastic coextinction model; Topological coextinction model
学科领域population dynamics; species extinction; statistics; theoretical model; Extinction, Biological; Models, Theoretical; Population Dynamics; Stochastic Processes
语种英语
scopus关键词population dynamics; species extinction; statistics; theoretical model; Extinction, Biological; Models, Theoretical; Population Dynamics; Stochastic Processes
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/118694
作者单位Programa de Pós-Graduação em Ecologia e Evolução, Universidade Federal de Goiás, Goiânia, Brazil; Departamento de Ecologia, Universidade Federal de Goiás, Goiânia, Brazil
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Vieira M.C.,Almeida-Neto M.. A simple stochastic model for complex coextinctions in mutualistic networks: Robustness decreases with connectance[J],2015,18(2).
APA Vieira M.C.,&Almeida-Neto M..(2015).A simple stochastic model for complex coextinctions in mutualistic networks: Robustness decreases with connectance.Ecology Letters,18(2).
MLA Vieira M.C.,et al."A simple stochastic model for complex coextinctions in mutualistic networks: Robustness decreases with connectance".Ecology Letters 18.2(2015).
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