The competitive dynamics of populations subject to an Allee effect

The Allee effect is introduced into intraspecific and two-species competitive models. We use phase plane analysis and simulation to investigate the dynamics of these models. Combining simple modeling and simulations, we demonstrate that the Allee effect alone could lead to alternative stable states...

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Bibliographic Details
Published inEcological modelling Vol. 124; no. 2; pp. 183 - 192
Main Authors Wang, Gang, Liang, Xue-Gong, Wang, Fei-Zhi
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 13.12.1999
Elsevier
Subjects
Allee effect
Animal, plant and microbial ecology
Biological and medical sciences
Coexistence
Destabilization
Extinction
Fundamental and applied biological sciences. Psychology
General aspects. Techniques
Methods and techniques (sampling, tagging, trapping, modelling...)
Multiplicity of stable states
Population dynamics
Population dynamics
Multiplicity of stable states
Coexistence
Extinction
Destabilization
Allee effect
Population extinction
Dynamics
Interspecific competition
Intraspecific competition
Simulation model
Mathematical model
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Summary:The Allee effect is introduced into intraspecific and two-species competitive models. We use phase plane analysis and simulation to investigate the dynamics of these models. Combining simple modeling and simulations, we demonstrate that the Allee effect alone could lead to alternative stable states in two-species competitive systems. In such systems, if interspecific competition is intense, both species may go extinct even if their population densities are high. Compared to a Lotka–Volterra competitive system, systems including Allee effect show obvious destabilization.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0304-3800
1872-7026
DOI:10.1016/S0304-3800(99)00160-X