Abstract
We consider the influence of a shifting environment and an advection on the spreading of an invasive species through a model given by the diffusive logistic equation with a free boundary. When the environment is shifting and without advection (\(\beta =0\)), Du et al. (Spreading in a shifting environment modeled by the diffusive logistic equation with a free boundary. arXiv:1508.06246, 2015) showed that the species always dies out when the shifting speed \(c_*\ge \mathcal {C}\), and the long-time behavior of the species is determined by trichotomy when the shifting speed \(c_*\in (0,\mathcal {C})\). Here we mainly consider the problems with advection and shifting speed \(c_*\in (0,\mathcal {C})\) (the case \(c_*\ge \mathcal {C}\) can be studied by similar methods in this paper). We prove that there exist \(\beta ^*<0\) and \(\beta _*>0\) such that the species always dies out in the long-run when \(\beta \le \beta ^*\), while for \(\beta \in (\beta ^*,\beta _*)\) or \(\beta =\beta _*\), the long-time behavior of the species is determined by the corresponding trichotomies respectively.
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The authors are grateful to Professor Rui Peng for valuable advices.
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Communicated by P. Rabinowitz.
L. Wei was supported by NSFC (11271167) and the Natural Science Fund for Distinguished Young Scholars of Jiangsu Province (BK20130002). G. Zhang was supported by NSFC (11501225).
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Wei, L., Zhang, G. & Zhou, M. Long time behavior for solutions of the diffusive logistic equation with advection and free boundary. Calc. Var. 55, 95 (2016). https://doi.org/10.1007/s00526-016-1039-y
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DOI: https://doi.org/10.1007/s00526-016-1039-y