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Destabilization of a seasonal synchronization in a population model with a seasonally varying Allee effect

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  • Přibylová, Lenka
  • Sen, Deeptajyoti
  • Eclerová, Veronika

Abstract

Climate change causing large seasonal fluctuations is likely to lead to an increase in the average threshold of the Allee effect as well as an increase in its seasonal variability. In this paper, we show that a seasonally synchronized predator-prey system can be strongly destabilized by these changes in the threshold of the Allee effect. The typical result first leads to two-year and multiyear cycles by the principle of period doubling on a folded Möbius strip, up to the emergence of a chaotic and hyper-chaotic attractor living close to the trivial equilibrium corresponding to the extinction of populations. Moreover, this instability of the ecosystem can be hidden for a long time and the transition to its basin of attraction can occur by external perturbation in a random and irreversible manner. We also reveal a double folding of the 1:1 synchronized cycle manifold inside the corresponding Arnold tongue and hysteresis similar to well-known Duffing oscillator.

Suggested Citation

  • Přibylová, Lenka & Sen, Deeptajyoti & Eclerová, Veronika, 2024. "Destabilization of a seasonal synchronization in a population model with a seasonally varying Allee effect," Applied Mathematics and Computation, Elsevier, vol. 462(C).
    • Handle: RePEc:eee:apmaco:v:462:y:2024:i:c:s0096300323005003
    DOI: 10.1016/j.amc.2023.128331
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    References listed on IDEAS

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    1. Kris Sales & Ramakrishnan Vasudeva & Matthew E. Dickinson & Joanne L. Godwin & Alyson J. Lumley & Łukasz Michalczyk & Laura Hebberecht & Paul Thomas & Aldina Franco & Matthew J. G. Gage, 2018. "Experimental heatwaves compromise sperm function and cause transgenerational damage in a model insect," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
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