Stochastic Skellam model
Carregando...
Fonte externa
Fonte externa
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Artigo
Direito de acesso
Acesso restrito
Fonte externa
Fonte externa
Resumo
We consider the dynamics of a biological population described by the Fisher-Kolmogorov Petrovskii-Piskunov (FKPP) equation in the case where the spatial domain consists of alternating favorable and adverse patches whose sizes are distributed randomly. For the one-dimensional case we define a stochastic analogue of the classical critical patch size We address the Issue of persistence of a population and we show that the fraction of the length of favorable segments to the total length is always smaller in the stochastic case than in a periodic arrangement. In this sense, spatial stochasticity favors viability of a population. (C) 2009 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
Population dynamics, Fisher-Kolmogorov-Petrovski-Piskunov equation, Fragmentation, Spatial stochasticity, Reaction-diffusion
Idioma
Inglês
Citação
Physica A-statistical Mechanics and Its Applications. Amsterdam: Elsevier B.V., v. 389, n. 1, p. 60-66, 2010.
