DOI: 10.1111/ele.12394
Scopus记录号: 2-s2.0-84934178403
论文题名: A simple stochastic model for complex coextinctions in mutualistic networks: Robustness decreases with connectance
作者: Vieira M.C. ; Almeida-Neto M.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2015
卷: 18, 期: 2 起始页码: 144
结束页码: 152
语种: 英语
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
Scopus关键词: population dynamics
; species extinction
; statistics
; theoretical model
; Extinction, Biological
; Models, Theoretical
; Population Dynamics
; Stochastic Processes
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107917
Appears in Collections: 气候减缓与适应
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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
Recommended Citation:
Vieira M.C.,Almeida-Neto M.. A simple stochastic model for complex coextinctions in mutualistic networks: Robustness decreases with connectance[J]. Ecology Letters,2015-01-01,18(2)