Results 31 to 40 of about 347 (107)

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

A two-strain ecoepidemic competition model

open access: yes, 2014
In this paper we consider a competition system in which two diseases spread by contact. We characterize the system behavior, establishing that only some configurations are possible.
Cavoretto, Roberto   +3 more
core   +1 more source

On the weakly competitive case in a two-species chemotaxis model

open access: yes, 2016
In this article we investigate a parabolic-parabolic-elliptic two-species chemotaxis system with weak competition and show global asymptotic stability of the coexistence steady state under a smallness condition on the chemotactic strengths, which seems ...
Black, Tobias   +2 more
core   +1 more source

Periodic oscillation in the delayed CF-system

open access: yes, 2007
This paper deals with the stability analysis of an autonomous system of differential equations and a nonlinear system of reaction diffusion equations with discrete time delay which models the behavior of a predator population whose dynamics depends on ...
S. Kovács
semanticscholar   +1 more source

A note on periodic solutions in non-symmetric May-Leonard systems

open access: yes, 2001
We shall give a proof in this extension of our previous paper for the conjecture about the occurrence of periodic orbits by means of Hopf bifurcation in non-symmetric May-Leonard systems.
Zsolt Szentkuti
semanticscholar   +1 more source

Coinvasion-Coexistence Traveling Wave Solutions of an Integro-Difference Competition System [PDF]

open access: yes, 2013
This paper is concerned with the traveling wave solutions of an integro-difference competition system, of which the purpose is to model the coinvasion-coexistence process of two competitors with age structure.
Lin, Guo, Pan, Shuxia
core  

Disaggregation behavior in the terrestrial isopod Porcellionides pruinosus as a new ecotoxicological endpoint for assessing infochemical disrupting activity

open access: yesEcological Indicators
Among rapid ecotoxicological bioassays for screening soil quality, avoidance behavior tests on gregarious edaphic species such as Porcellionides pruinosus are widely used.
Lorenzo Federico   +3 more
doaj   +1 more source

Stability analysis for the phytoplankton-zooplankton model with depletion of dissolved oxygen and strong Allee effects

open access: yesResults in Engineering
The photosynthetic activity of phytoplankton in the seas is responsible for an estimated 50–80 % of the world's oxygen generation. Both phytoplankton and zooplankton require some of this synthesized oxygen for cellular respiration.
Ahmed Ali   +3 more
doaj   +1 more source

Stochastic and deterministic models for age-structured populations with genetically variable traits

open access: yes, 2009
Understanding how stochastic and non-linear deterministic processes interact is a major challenge in population dynamics theory. After a short review, we introduce a stochastic individual-centered particle model to describe the evolution in continuous ...
C. Besse   +5 more
core   +3 more sources

Fractional order for the transmission dynamics of coffee berry diseases (CBD)

open access: yesEuropean Journal of Applied Mathematics
Coffee berry diseases (CBD) pose significant threats to coffee production worldwide, affecting the livelihoods of millions of farmers and the global coffee market.
Abayneh Kebede Fantaye
doaj   +1 more source

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