# American Institute of Mathematical Sciences

September  2013, 12(5): 2189-2201. doi: 10.3934/cpaa.2013.12.2189

## Existence of positive steady states for a predator-prey model with diffusion

 1 Department of Mathematics, Dalian Nationalities University, Dalian 116600, China 2 College of Mathematics and Information Science, Key Laboratory of Mathematics and Interdisciplinary Sciences of Guangdong Higher Education Institutes, Guangzhou University, Guangzhou 510006, China 3 School of Computer Science, Dalian Nationalities University, Dalian 116600, China 4 College of Electromechanical and Information Engineering, Dalian Nationalities University, Dalian 116600, China

Received  June 2012 Revised  August 2012 Published  January 2013

In this paper, we are concerned with the existence of positive steady states for a diffusive predator-prey model in a spatially heterogeneous environment. We completely determine the intervals of certain parameter of the model in which a positive steady state exists.
Citation: Wenshu Zhou, Hongxing Zhao, Xiaodan Wei, Guokai Xu. Existence of positive steady states for a predator-prey model with diffusion. Communications on Pure & Applied Analysis, 2013, 12 (5) : 2189-2201. doi: 10.3934/cpaa.2013.12.2189
##### References:
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##### References:
 [1] R. S. Cantrell and C. Cosner, Practical persistence in ecological models via comparison methods, Proc. Roy. Soc. Edinburgh Sect. A, 126 (1996), 247-272.  Google Scholar [2] E. N. Dancer and Y. H. Du, Effects of certain degeneracies in the predator-prey model, SIAM J. Math. Anal, 34 (2002), 292-314. doi: 10.1137/S0036141001387598.  Google Scholar [3] Y. H. Du and S. B. Hsu, A diffusive predator-prey model in heterogeneous environment, J. Differential Equations, 203 (2004), 331-364. doi: 10.1016/j.jde.2004.05.010.  Google Scholar [4] Y. H. Du and S. J. Li, Positive solutions with prescribed patterns in some simple semilinear equations, Differential Integral Equations, 15 (2002), 805-822.  Google Scholar [5] Y. H. Du and Y. Lou, Some uniqueness and exact multiplicity results for a predator-prey model, Trans. Amer. Math. Soc, 349 (1997), 2443-2475. doi: 10.1090/S0002-9947-97-01842-4.  Google Scholar [6] Y. H. Du and J. P. Shi, A diffusive predator-prey model with a protection zone, J. Differential Equations, 229 (2006), 63-91. doi: 10.1016/j.jde.2006.01.013.  Google Scholar [7] Y. H. Du and J. P. Shi, Allee effect and bistability in a spatially heterogeneous predator-prey model, Tran. Amer. Math. Soc, 359 (2007), 4557-4593. doi: 10.1090/S0002-9947-07-04262-6.  Google Scholar [8] J. M. Fraile, P. K. Medina, J. López-Gómez and S. Merino, Elliptic eigenvalue problems and unbounded continua of positive solutions of a semilinear elliptic equation, J. Differential Equations, 127 (1996), 295-319. doi: 10.1006/jdeq.1996.0071.  Google Scholar [9] R. T. Gong and S. B. Hsu, Stability analysis for a class of diffusive coupled system with application to population biology, Can. Appl. Math. Quart, 8 (2000), 79-96.  Google Scholar [10] K. Hasík, On a predator-prey system of Gause type, J. Math. Biol., 60 (2010), 59-74. doi: 10.1007/s00285-009-0257-8.  Google Scholar [11] S. B. Hsu, A survey of constructing Lyapunov functions for mathematical models in population biology, Taiwannese J. Mathematics, 9 (2005), 151-173.  Google Scholar [12] W. Ko, K. Ryu, A qualitative study on general Gause type predator-prey models with constant diffusion rates, J. Math. Anal. Appl., 344 (2008), 217-230. doi: 10.1016/j.jmaa.2008.03.006.  Google Scholar [13] W. Ko, K. Ryu, A qualitative study on general Gause-type predator-prey models with non-monotonic functional response, Nonlinear Anal. RWA, 10 (2009), 2558-2573. doi: 10.1016/j.nonrwa.2008.05.012.  Google Scholar [14] Y. Kuang, Global stability of Gause-type predator-prey systems, J. Math. Biol., 28 (1990), 463-474. doi: 10.1007/BF00178329.  Google Scholar [15] C. S. Lin, W. M. Ni and I. Takagi, Large amplitude stationary solutions to a chemotaxis system, J. Differential Equations, 72 (1988), 1-27.  Google Scholar [16] Y. Lou, On the effects of migration and spatial heterogeneity on single and multiple species, J. Differential Equations, 223 (2006), 400-426. doi: 10.1016/j.jde.2005.05.010.  Google Scholar [17] Y. Lou and W. Ni, Diffusion, self-diffusion and cross-diffusion, J. Differential Equations, 131 (1996), 79-131.  Google Scholar [18] J. D. Murray, "Mathematical Biology," Springer-Verlag, Berlin, 1989.  Google Scholar [19] T. C. Ouyang, On the positive solutions of semilinear equations $\Delta u + \lambda u-hu^p = 0$ on the compact manifolds, Trans. Amer. Math. Soc., 331 (1992), 503-527. doi: 10.1090/S0002-9947-1992-1055810-7.  Google Scholar [20] Peter Y. H. Pang and M. X. Wang, Non-constant positive steady states of a predator-prey system with non-monotonic functional response and diffusion, Proc. London. Math. Soc., 88 (2004), 135-157. doi: 10.1112/S0024611503014321.  Google Scholar [21] J. Smoller, "Shock Waves and Reaction-Diffusion Equations," Springer-Verlag, New York, 1994.  Google Scholar [22] M. X. Wang, Peter Y. H. Pang and W. Y. Chen, Sharp spatial pattern of the diffusive Holling-Tanner prey-predator model in heterogeneous environment, IMA Journal of Applied Mathematics, 73 (2008), 815-835. doi: 10.1093/imamat/hxn016.  Google Scholar
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