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An Analysis of a Semelparous Population Model with Density-Dependent Fecundity and Density - Dependent Survival Probabilities.

Permanent link
https://hdl.handle.net/10037/12026
DOI
https://doi.org/10.1155/2017/8934295
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Date
2017-12-17
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Wikan, Arild
Abstract
A discrete age-structured semelparous Leslie matrix model where density dependence is included both in the fecundity and in the survival probabilities is analysed. Depending on strength of density dependence, we show in the precocious semelparous case that the nonstationary dynamics may indeed be rich, ranging from SYC (a dynamical state where the whole population is in one age class only) dynamics to cycles of low period where all age classes are populated. Quasiperiodic and chaotic dynamics have also been identified. Moreover, outside parameter regions where SYC dynamics dominates, we prove that the transfer from stability to instability goes through a supercritical Neimark − Sacker bifurcation, and it is further shown that when the population switches from possessing a precocious to a delayed semelparous life history both stability properties and the possibility of periodic dynamics become weaker.
Description
Source at https://doi.org/10.1155/2017/8934295 .
Publisher
Hindawi Publishing Corporation
Citation
Wikan A. An Analysis of a Semelparous Population Model with Density-Dependent Fecundity and Density - Dependent Survival Probabilities.. Journal of Applied Mathematics. 2017;2017:1-14
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