6533b862fe1ef96bd12c7569

RESEARCH PRODUCT

Spatio-temporal patterns in population dynamics

Bernardo SpagnoloA. La Barbera

subject

Statistics and Probabilityeducation.field_of_studyExtinctionStochastic processPopulationDynamics (mechanics)Condensed Matter PhysicsMultiplicative noiseNoiseControl theorySpatial ecologyQuantitative Biology::Populations and EvolutionEcosystemeducationBiological systemMathematics

description

Abstract The transient dynamics of interacting biological species extracted from two ecosystems is investigated. We model the environment interaction by a multiplicative noise and the temperature oscillations by a periodic forcing. We find noise-induced effects such as enhanced temporal oscillations, spatial patterns and noise delayed extinction for the model of two competing species. We extend our analysis to an ecosystem of three interacting species, namely one predator and two preys. We find spatial patterns induced by the noise.

yearjournalcountryeditionlanguage
2002-11-01Physica A: Statistical Mechanics and its Applications
https://doi.org/10.1016/s0378-4371(02)01173-1