Results 11 to 20 of about 12,706 (203)
Journal of Animal Ecology, 2013 SummaryAllee effects occur when the aggregation of individuals result in mutually beneficial intraspecific interactions whereby individual fitness, or per capita growth rate, increases with the number of individuals. Allee effects are common in social species due to their cooperative behaviours, such as breeding, feeding or defence.
Luque, Gloria +2 more
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Spawner weight and ocean temperature drive Allee effect dynamics in Atlantic cod, Gadus morhua: inherent and emergent density regulation [PDF]
Biogeosciences, 2023 Stocks of Atlantic cod, Gadus morhua, show diverse recovery responses when fishing pressure is relieved. The expected outcome of reduced fishing pressure is that the population regains its size.
A.-M. Winter +3 more
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Allee effects and extinction in a lattice model [PDF]
Theoretical Population Biology, 2007 In the interest of conservation, the importance of having a large habitat available for a species is widely known. Here, we introduce a lattice-based model for a population and look at the importance of fluctuations as well as that of the population density, particularly with respect to Allee effects.
Windus, Alastair +1 more
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Dynamical behaviour of discrete logistic equation with Allee effect in an uncertain environment
Results in Control and Optimization, 2023 The Allee effect refers to a natural occurrence where the average individual fitness of a population or species is correlated with population size or density. A demographic Allee effect having a threshold population size constitutes a strong Allee effect.
Abdul Alamin +4 more
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Estimating Allee dynamics before they can be observed: polar bears as a case study. [PDF]
PLoS ONE, 2014 Allee effects are an important component in the population dynamics of numerous species. Accounting for these Allee effects in population viability analyses generally requires estimates of low-density population growth rates, but such data are ...
Péter K Molnár +2 more
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Pattern Formation in a Reaction-Diffusion Predator-Prey Model with Weak Allee Effect and Delay
Complexity, 2019 In this paper, we establish a reaction-diffusion predator-prey model with weak Allee effect and delay and analyze the conditions of Turing instability. The effects of Allee effect and delay on pattern formation are discussed by numerical simulation.
Hua Liu +5 more
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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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Allee-Effect-Induced Instability in a Reaction-Diffusion Predator-Prey Model
Abstract and Applied Analysis, 2013 We investigate the spatiotemporal dynamics induced by Allee effect in a reaction-diffusion predator-prey model. In the case without Allee effect, there is nonexistence of diffusion-driven instability for the model.
Weiming Wang +3 more
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Stability analysis of a single species logistic model with Allee effect and feedback control
Advances in Difference Equations, 2018 A single species logistic model with Allee effect and feedback control dxdt=rx(1−x)xβ+x−axu,dudt=−bu+cx, $$\begin{aligned}& \frac{dx}{dt} = rx(1-x)\frac{x}{\beta+x}-axu, \\& \frac{du}{dt} = -bu+cx, \end{aligned}$$ where β, r, a, b, and c are all positive
Qifa Lin
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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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