نتایج جستجو برای: predator prey system
تعداد نتایج: 2253314 فیلتر نتایج به سال:
We address a hyperbolic predator–prey model, which we formulate with the use of Cattaneo model for chemosensitive movement. put special focus on case when equation flux species takes form conservation law—that is, assume relation between diffusivity and sensitivity coefficients. Regarding this relation, there are pieces arguing its relevance to some real-life populations, e.g., copepods (Harpac...
trait effects in community dynamics is to incorporate dynamic state variable models [14] into community models. Also, the traits of predators and prey often depend on the traits of other predators and prey; for example, where and when prey forage is shaped by the distributions and behaviors of other prey and predators [15]. Thus, in these cases, prey behavior is not only a function of the densi...
Successful feeding and escape behaviors in fishes emerge from precise integration of locomotion and feeding movements. Fishes inhabit a wide range of habitats, including still ponds, turbulent rivers, and wave-pounded shorelines, and these habitats vary in several physical variables that can strongly impact both predator and prey. Temperature, the conditions of ambient flow, and light regimes a...
In this paper, we study a stochastic Holling-type II predator-prey model with stage structure and refuge for prey. Firstly, the existence uniqueness of global positive solution system are proved. Secondly, stochastically ultimate boundedness is discussed. Next, sufficient conditions ergodic stationary distribution established by constructing suitable Lyapunov function. Then, extinction predator...
The effects of ontogenetic niche shifts on community structure and dynamics are underexplored, despite the occurrence of such shifts in the majority of animal species. We studied the form of niche shifts in a predator that exhibits multiple ontogenetic niche shifts, and analyzed how this life history complexity affects the size-structured predator–prey dynamics in the system. The predator repre...
Our work explores the possibilities of using cellular automata to simulate predator-prey interaction. A automaton is a discrete model that allows it be used for various computational purposes. In recent years, we have observed how important know behaviour biological and ecological systems. Knowledge evolution different systems will allow us adapt more quickly possible scenarios. aims system get...
A class of (N+1)-species ratio-dependent predator–prey stochastic models, which consists of one predator population and N prey populations (or N subpopulations of a prey metapopulation), is considered. The influence of a fluctuating environment on the carrying capacities of prey populations is modeled as a dichotomous noise. The study is a follow-up of a previous investigation of the above clas...
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