4.4 Article

HOPE BIFURCATION AND PATTERN FORMATION IN A DELAYED DIFFUSIVE LOGISTIC MODEL WITH SPATIAL HETEROGENEITY

Journal

Publisher

AMER INST MATHEMATICAL SCIENCES-AIMS
DOI: 10.3934/dcdsb.2018182

Keywords

Spatial heterogeneity; reaction-diffusion equation; diffusive logistic model; Hopf bifurcation; time delay

Funding

  1. US-NSF [DMS-1715651]
  2. National Natural Science Foundation of China [11571257]
  3. Science and Technology Commission of Shanghai Municipality [18dz2271000]
  4. China Scholarship Council

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In this paper, we study the Hopf bifurcation and spatiotemporal pattern formation of a delayed diffusive logistic model under Neumann boundary condition with spatial heterogeneity. It is shown that for large diffusion coefficient, a supercritical Hopf bifurcation occurs near the non-homogeneous positive steady state at a critical time delay value, and the dependence of corresponding spatiotemporal patterns on the heterogeneous resource function is demonstrated via numerical simulations. Moreover, it is proved that the heterogeneous resource supply contributes to the increase of the temporal average of total biomass of the population even though the total biomass oscillates periodically in time.

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