Bifurcation analysis of a diffusive predator–prey model in spatially heterogeneous environment

• Main Authors: Biao Wang, Zhengce Zhang
• Format: Article
• Language: English
• Published: University of Szeged 2017-05-01
• Series: Electronic Journal of Qualitative Theory of Differential Equations
• Subjects: predator–prey; spatial heterogeneity; bifurcation
• Online Access: http://www.math.u-szeged.hu/ejqtde/periodica.html?periodica=1&paramtipus_ertek=publication&param_ertek=5354

We investigate positive steady states of a diffusive predator–prey model in spatially heterogeneous environment. In comparison with the spatially homogeneous environment, the dynamics of the predator–prey model of spatial heterogeneity is more complicated. Our studies show that if dispersal rate of the prey is treated as a bifurcation parameter, for some certain ranges of death rate and dispersal rate of the predator, there exist multiply positive steady state solutions bifurcating from semi-trivial steady state of the model in spatially heterogeneous environment, whereas there exists only one positive steady state solution which bifurcates from semi-trivial steady state of the model in homogeneous environment.