This paper considers permanence of a single-species dispersal periodic system with the possibility of the loss for the species during their dispersion among patches. The condition obtained for permanence generalizes the known condition on the system without loss for the species in the process of movement. Next, we add predators into every patch and consider the survival possibility of the predator. It is shown that the total amount of the predators can remain positive, if the single-species (prey) dispersal system has a positive periodic solution and the quantity of prey in each patch is enough for survival of the predator. (C) 2004 Elsevier B.V. All rights reserved.
机构:
Fuzhou Univ, Coll Math & Comp Sci, Fuzhou 350116, Peoples R China
Fuzhou Univ, Key Lab Operat Res & Control Univ Fujian, Fuzhou 350116, Peoples R ChinaFuzhou Univ, Coll Math & Comp Sci, Fuzhou 350116, Peoples R China
Wei, Fengying
Wang, Chengjia
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Fuzhou Univ, Coll Math & Comp Sci, Fuzhou 350116, Peoples R ChinaFuzhou Univ, Coll Math & Comp Sci, Fuzhou 350116, Peoples R China
机构:
NE Normal Univ, Sch Math & Stat, Changchun 130024, Jilin, Peoples R China
Huaiyin Normal Univ, Sch Math Sci, Huaian 223300, Peoples R ChinaNE Normal Univ, Sch Math & Stat, Changchun 130024, Jilin, Peoples R China
Liu, Meng
Wang, Ke
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Harbin Inst Technol, Dept Math, Weihai 264209, Peoples R ChinaNE Normal Univ, Sch Math & Stat, Changchun 130024, Jilin, Peoples R China