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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
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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). |
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