Mixed-mode oscillations and chaos in a prey-predator system with dormancy of predators.
It is shown that the dormancy of predators induces mixed-mode oscillations and chaos in the population dynamics of a prey-predator system under certain conditions. The mixed-mode oscillations and chaos are shown to bifurcate from a coexisting equilibrium by means of the theory of fast-slow systems. These results may help to find experimental conditions under which one can demonstrate chaotic population dynamics in a simple phytoplankton-zooplankton (-resting eggs) community in a microcosm with a short duration.
Kuwamura
Masataka
M
Graduate School of Human Development and Environment, Kobe University, Kobe 657-8501, Japan. kuwamura@main.h.kobe-u.ac.jp
Chiba
Hayato
H
D000818:Animals; D001683:Biological Clocks / Q000502:physiology*; D003198:Computer Simulation; D017753:Ecosystem; D006605:Hibernation / Q000502:physiology*; D008954:Models, Biological; D017711:Nonlinear Dynamics; D010839:Phytoplankton / Q000502:physiology*; D011157:Population Dynamics; D011235:Predatory Behavior / Q000502:physiology*; D015048:Zooplankton / Q000502:physiology*