Results 31 to 40 of about 42,411 (234)
Stability and bifurcation in a Holling type II predator–prey model with Allee effect and time delay
Advances in Difference Equations, 2018 In this paper, we consider a Holling type II predator–prey model incorporating time delay and Allee effect in prey. We discuss the influence of Allee effect on the logistic equation.
Zaowang Xiao, Xiangdong Xie, Yalong Xue
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Advances 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
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On the fractional Allee logistic equation in the Caputo sense
Examples and Counterexamples, 2023 In the framework of population models, logistic growth and fractional logistic growth has been analyzed. In some situations the so-called Allee effect gives more accurate approximation.
I. Area, Juan J. Nieto
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Strong and weak Allee effects and chaotic dynamics in Richards' growths [PDF]
, 2013 In this paper we define and investigate generalized Richards' growth models with strong and weak Allee effects and no Allee effect. We prove the transition from strong Allee effect to no Allee effect, passing through the weak Allee effect, depending on ...
Fournier-Prunaret, Danièle +2 more
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Evolutionary dynamics and strong Allee effects
Journal of Biological Dynamics, 2012 We describe the dynamics of an evolutionary model for a population subject to a strong Allee effect. The model assumes that the carrying capacity k(u), inherent growth rate r(u), and Allee threshold a(u) are functions of a mean phenotypic trait u subject to evolution. The model is a plane autonomous system that describes the coupled population and mean
J M, Cushing, Jarred T, Hudson
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Allee effects in marine systems [PDF]
Marine Ecology Progress Series, 2004 The fitness or population growth rate of populations with Allee effects increases with in- creasing population size or density up to a certain threshold. Allee effects are possible in marine pop- ulations, as they are less open than has been assumed and may have a metapopulation structure.
J Gascoigne, RN Lipcius
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Asymmetrical Impact of Allee Effect on a Discrete-Time Predator-Prey System
Journal 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
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Allee effects driven by predation [PDF]
Journal of Applied Ecology, 2004 Summary In a population with Allee effects a positive relationship exists between fitness and population size or density. Allee effects may result in extinction thresholds and are therefore crucial in conservation and management. It has been shown theoretically that Allee effects can be driven by predation; however, there are few empirical data ...
JOANNA C. GASCOIGNE, ROMUALD N. LIPCIUS
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An Artificial Molecular Pump Powered by Light
Angewandte Chemie, EarlyView.A minimal rotaxane‐based supramolecular system functions as a light‐powered molecular pump, capturing macrocycles from solution and concentrating them within an intramolecular compartment. Repeated azobenzene photoisomerization modulates the binding and kinetic barriers of threading and shuttling, generating a photon‐driven energy ratchet that sustains
Federico Nicoli +7 more
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Dynamics Analysis of a Discrete-Time Commensalism Model with Additive Allee for the Host Species
Axioms, 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
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