Results 41 to 50 of about 44,768 (308)

Dynamics of a Predator–Prey Model with the Additive Predation in Prey

open access: yesMathematics, 2022
In this paper, we consider a predator–prey model, in which the prey’s growth is affected by the additive predation of its potential predators. Due to the additive predation term in prey, the model may exhibit the cases of the strong Allee effect, weak ...
Dingyong Bai, Xiaoxuan Zhang
doaj   +1 more source

Asymmetrical Impact of Allee Effect on a Discrete-Time Predator-Prey System

open access: yesJournal of Applied Mathematics, 2013
A discrete-time predator-prey model is proposed with Leslie-type numerical response, and the asymmetrical influence of Allee effect on the proposed system is investigated.
Wenting Wang, Yujuan Jiao, Xiuping Chen
doaj   +1 more source

Stability and bifurcation in a single species logistic model with additive Allee effect and feedback control

open access: yesAdvances in Difference Equations, 2020
In this paper, we propose a single species logistic model with feedback control and additive Allee effect in the growth of species. The basic aim of the paper is to discuss how the additive Allee effect and feedback control influence the above model’s ...
Yangyang Lv, Lijuan Chen, Fengde Chen
doaj   +1 more source

Multiple Allee effects and population management

open access: yesTrends in Ecology & Evolution, 2007
Allee effects, strongly related to the extinction vulnerability of populations and gradually becoming acknowledged by both theoretically oriented and applied ecologists, have already been shown to have important roles in the dynamics of many populations.
Berec, Lûdek   +2 more
openaire   +3 more sources

Dynamic behaviors of a commensal symbiosis model involving Allee effect and one party can not survive independently

open access: yesAdvances in Difference Equations, 2018
A two-species commensal symbiosis model involving Allee effect and one party can not survive independently is proposed and studied in this paper. Sufficient conditions which ensure the local and global stability of the boundary equilibrium and the ...
Baoguo Chen
doaj   +1 more source

Dynamics Analysis of a Discrete-Time Commensalism Model with Additive Allee for the Host Species

open access: yesAxioms, 2023
We propose and study a class of discrete-time commensalism systems with additive Allee effects on the host species. First, the single species with additive Allee effects is analyzed for existence and stability, then the existence of fixed points of ...
Yanbo Chong   +3 more
doaj   +1 more source

Scaling of the risk landscape drives optimal life history strategies and the evolution of grazing [PDF]

open access: yes, 2019
Consumers face numerous risks that can be minimized by incorporating different life-history strategies. How much and when a consumer adds to its energetic reserves or invests in reproduction are key behavioral and physiological adaptations that structure
Bhat, Uttam   +2 more
core   +3 more sources

Influence of Allee effect in prey populations on the dynamics of two-prey-one-predator model

open access: yesMathematical Biosciences and Engineering, 2018
One of the important ecological challenges is to capture the complex dynamics and understand the underlying regulating ecological factors. Allee effect is one of the important factors in ecology and taking it into account can cause significant changes to
Moitri Sen   +2 more
doaj   +1 more source

The genetic Allee effect: a unified framework for the genetics and demography of small populations

open access: yesEcosphere, 2016
The Allee effect is a theoretical model predicting low growth rates and the possible extinction of small populations. Historically, studies of the Allee effect have focused on demography.
Gloria M. Luque   +5 more
doaj   +1 more source

Extinction rates of established spatial populations

open access: yes, 2011
This paper deals with extinction of an isolated population caused by intrinsic noise. We model the population dynamics in a "refuge" as a Markov process which involves births and deaths on discrete lattice sites and random migrations between neighboring ...
A. S. Mikhailov   +8 more
core   +1 more source

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