Results 31 to 40 of about 44,768 (308)
Stability and bifurcation in a two-patch model with additive Allee effect
AIMS Mathematics, 2022 A two-patch model with additive Allee effect is proposed and studied in this paper. Our objective is to investigate how dispersal and additive Allee effect have an impact on the above model's dynamical behaviours.
Lijuan Chen, Tingting Liu, Fengde Chen
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Ecosphere, 2022 Eurasian lynx (Lynx lynx) have recently naturally recolonized southern Sweden. The first documented reproduction of lynx in recent times occurred in 2003, and the population increased from 2 to 48 family groups (the unit of measurement in Swedish ...
Henrik Andrén +4 more
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Discrete Dynamics in Nature and Society, 2016 The Allee effect is incorporated into a predator-prey model with linear functional response. Compared with the predator-prey which only takes the crowding effect and predator partially dependent on prey into consideration, it is found that the Allee ...
Jie Yan +3 more
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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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Modeling Allee Effect from Beta(p, 2) Densities [PDF]
, 2012 In this work we develop and investigate generalized populational growth models, adjusted from Beta(p, 2) densities, with Allee effect. The use of a positive parameter leads the presented generalization, which yields some more flexible models with ...
Aleixo, Sandra, Rocha, J. Leonel
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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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Demographic and Component Allee Effects in Southern Lake Superior Gray Wolves. [PDF]
PLoS ONE, 2016 Recovering populations of carnivores suffering Allee effects risk extinction because positive population growth requires a minimum number of cooperating individuals. Conservationists seldom consider these issues in planning for carnivore recovery because
Jennifer L Stenglein +1 more
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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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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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