Results 11 to 20 of about 44,768 (308)

Dynamical analysis of a Lotka Volterra commensalism model with additive Allee effect

open access: yesOpen Mathematics, 2022
We propose and analyze a Lotka-Volterra commensal model with an additive Allee effect in this article. First, we study the existence and local stability of possible equilibria.
He Xiaqing   +3 more
doaj   +1 more source

Interaction between Allee effects caused by organism-environment feedback and by other ecological mechanisms. [PDF]

open access: yesPLoS ONE, 2017
Understanding Allee effect has crucial importance for ecological conservation and management because it is strongly related to population extinction. Due to various ecological mechanisms accounting for Allee effect, it is necessary to study the influence
Lijuan Qin   +3 more
doaj   +1 more source

An effective Allee effect may induce the survival of low-density predator

open access: yesResults in Physics, 2023
Allee effect, as one of the research hotspots in ecology and conservation biology, extremely easily affects the distribution of population in space, especially for the low-density population. In the ecosystem, the spatial distribution of predator is more
Li-Ying Ning   +5 more
doaj   +1 more source

Allee effects in ants [PDF]

open access: yesJournal 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
openaire   +3 more sources

Genetic Allee effects and their interaction with ecological Allee effects [PDF]

open access: yesJournal of Animal Ecology, 2016
Summary It is now widely accepted that genetic processes such as inbreeding depression and loss of genetic variation can increase the extinction risk of small populations.
Wittmann, Meike J.   +2 more
openaire   +2 more sources

Spatiotemporal dynamics of a diffusive predator-prey model with delay and Allee effect in predator

open access: yesMathematical Biosciences and Engineering, 2023
It has been shown that Allee effect can change predator-prey dynamics and impact species persistence. Allee effect in the prey population has been widely investigated. However, the study on the Allee effect in the predator population is rare.
Fang Liu, Yanfei Du
doaj   +1 more source

Dynamical behaviour of discrete logistic equation with Allee effect in an uncertain environment

open access: yesResults 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
doaj   +1 more source

Spawner weight and ocean temperature drive Allee effect dynamics in Atlantic cod, Gadus morhua: inherent and emergent density regulation [PDF]

open access: yesBiogeosciences, 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
doaj   +1 more source

Allee Effects May Slow the Spread of Parasites in a Coastal Marine Ecosystem [PDF]

open access: yes, 2011
Allee effects are thought to mediate the dynamics of population colonization, particularly for invasive species. However, Allee effects acting on parasites have rarely been considered in the analogous process of infectious disease establishment and ...
Connors, B. M.   +3 more
core   +1 more source

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