Results 11 to 20 of about 342 (107)

Adaptive dynamics in logistic branching populations [PDF]

open access: yes, 2007
We consider a trait-structured population subject to mutation, birth and competition of logistic type, where the number of coexisting types may fluctuate.
Champagnat, Nicolas, Lambert, Amaury
core   +5 more sources

Control of mosaic disease using microbial biostimulants: insights from mathematical modelling [PDF]

open access: yes, 2020
A major challenge to successful crop production comes from viral diseases of plants that cause significant crop losses, threatening global food security and the livelihoods of countries that rely on those crops for their staple foods or source of income.
Al Basir, Fahad   +8 more
core   +1 more source

Metapopulation Dynamics with Migration and Local Competition [PDF]

open access: yes, 2002
MSC2000: primary 34D15, 34D23, 92B05; secondary 34K60, 34E13, 92D40.Many patch-based metapopulation models assume that the local population within each patch is at its equilibrium and independent of changes in patch occupancy.
Feng, Zhilan, Yi, Yingfei, Zhu, Huaiping
core   +2 more sources

Large Time Behaviour of the Solution of a Nonlinear Diffusion Problem in Anthropology

open access: yesJournal of Mathematical Study, 2018
In this article we consider a reaction-diffusion model for the spreading of farmers in Europe, which was occupied by hunter-gatherers; this process is known as the Neolithic agricultural revolution.
J. Eliaš
semanticscholar   +1 more source

Growth of Phytoplankton

open access: yesBiomedical Journal of Scientific & Technical Research, 2019
A central problem in biological dynamical systems is to determine the boundaries of evolution. Although this is a general problem, we prefer to give solutions for growth of the phytoplankton. AMS Mathematical Classiftcation: 92D40, 35B36, 35Q92, 37N25.
C. Udrişte   +5 more
semanticscholar   +1 more source

DYNAMICS OF LESLIE-GOWER PREDATOR-PREY MODEL WITH ADDITIONAL FOOD FOR PREDATORS

open access: yes, 2017
We consider a Leslie-Gower predator prey model with additional food for predators. Here we investigate the dynamics of the model such as the permanence, determination of equilibrium points and their existence condition as well as their stability ...
H. Ulfa, A. Suryanto, I. Darti
semanticscholar   +1 more source

Global periodic solutions in a plankton-fish interaction model with toxication delay

open access: yesNonlinear Engineering, 2018
In this paper, a plankton-fish interaction model is proposed and analyzed with the help of delay differential equations. Firstly, the elementary dynamical properties of the system in the absence of time delay is discussed.
Sharma Amit
doaj   +1 more source

The logistic modeling population: Having harvesting factor

open access: yes, 2015
: The present paper deals with the logistic equation having harvesting factor, which is studied in two cases, constant and non-constant. In fact, the nature of equilibrium points and solutions behavior has been analyzed for both of the above cases by ...
Doust M.H. Rahmani, M. Saraj
semanticscholar   +1 more source

A Spatially Explicit Capture–Recapture Model for Partially Identified Individuals When Trap Detection Rate Is Less than One [PDF]

open access: yesCalcutta Statistical Association, Bulletin, 2017
Spatially explicit capture–recapture (SECR) models have gained enormous popularity to solve abundance estimation problems in ecology. In this study, we develop a novel Bayesian SECR model that disentangles two processes: one is the process of animal ...
S. Dey   +3 more
semanticscholar   +1 more source

On the principle of competitive exclusion in metapopulation models [PDF]

open access: yes, 2014
In this paper we present and analyse a simple two populations model with migrations among two different environments. The populations interact by competing for resources. Equilibria are investigated.
Belocchio, Davide   +4 more
core   +2 more sources

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