气候变化领域集成服务门户(CCPortal): A simple stochastic model for complex coextinctions in mutualistic networks: Robustness decreases with connectance

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DOI	10.1111/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
ISSN	1461-023X
EISSN	1461-0248
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
推荐引用方式 GB/T 7714	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).