Autor: |
Aliyu, Murtala Bello, Mohd, Mohd Hafiz |
Předmět: |
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Zdroj: |
AIP Conference Proceedings; 2021, Vol. 2423 Issue 1, p1-6, 6p |
Abstrakt: |
Due to various factors, biodiversity is under severe threat, and these forces include multiple complex interactions within the ecosystem. Nature consists of different kind of interacting species, thus how the presence of a competing species with varying growth rates ability impacts the other interacting species has remained unexplored in the ecological literature. To investigate the effects of the varying growth rate of competitor species and its interactions with other biotic factors, we revisit a simple multi-species ecological model and analyse the model with the techniques of modelling and dynamical systems. We present some findings concerning how the changing level of the growth rate of competitor species affect multi-species community dynamics. We observe the emergence of transcritical, Hopf and limit point bifurcations in this model. Each of these bifurcation points affects species composition (presence-absence) in the ecological system. For example, transcritical bifurcation triggers the extinction of species and acts as an invasion boundary in the ecological system. Limit point is where the two equilibrium meets and annihilate each other in the system, and often catastrophic ecological observation occurs beyond this point. Hopf bifurcation induces oscillatory behaviour in the ecological system as species population densities fluctuate from some minimum to maximum population densities as time progress. These types of oscillatory dynamics can pose a significant danger to species diversity in this ecological system as it leads to the extinction of species in some cases. [ABSTRACT FROM AUTHOR] |
Databáze: |
Complementary Index |
Externí odkaz: |
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