Asymptotic behaviour of a model of hierarchically structured population dynamics

被引:0
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作者
Àngel Calsina
Joan Saldaña
机构
[1] Departament de Matemàtiques,
[2] Universitat Autònoma de Barcelona,undefined
[3] E-08193 Bellaterra,undefined
[4] Barcelona,undefined
[5] Spain (e-mail: calsina@mat.uab.es),undefined
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Key words: Rank competition; Structured population dynamics; Asymptotic behaviour;
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摘要
 A hierarchically structured population model with a dependence of the vital rates on a function of the population density (environment) is considered. The existence, uniqueness and the asymptotic behaviour of the solutions is obtained transforming the original non-local PDE of the model into a local one. Under natural conditions, the global asymptotical stability of a nontrivial equilibrium is proved. Finally, if the environment is a function of the biomass distribution, the existence of a positive total biomass equilibrium without a nontrivial population equilibrium is shown.
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页码:967 / 987
页数:20
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