Abstract
We consider a Lotka-Volterra system of two competing species subject to multiplicative alpha-stable Lévy noise. The interaction parameter between the species is a random process which obeys a stochastic differential equation with a generalized bistable potential in the presence both of a periodic driving term and an additive alpha-stable Lévy noise. We study the species dynamics, which is characterized by two different regimes, exclusion of one species and coexistence of both. We find quasi-periodic oscillations and stochastic resonance phenomenon in the dynamics ofthe competing species, analysing the role of the Lévy noise sources.
| Lingua originale | English |
|---|---|
| pagine (da-a) | 1-9 |
| Numero di pagine | 9 |
| Rivista | PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS |
| Volume | 82 |
| Stato di pubblicazione | Published - 2010 |
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All Science Journal Classification (ASJC) codes
- Statistical and Nonlinear Physics
- Statistics and Probability
- Condensed Matter Physics
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Spagnolo, B., Valenti, D., Dubkov, & La Cognata, A. (2010). Dynamics of two competing species in the presence of Lévy noise sources. PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS, 82, 1-9.