On Lotka-Volterra competitive parabolic systems: Exclusion, coexistence and bistability

On Lotka-Volterra competitive parabolic systems: Exclusion, coexistence and bistability
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关于 Lotka-Volterra 竞争性抛物线系统:排斥、共存和双稳态

DOI:
10.1016/j.jde.2021.02.031
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发表时间:
2021-05
影响因子:
2.4
通讯作者:
Dongmei Xiao
Dongmei Xiao
中科院分区:
数学2区
文献类型:
--
作者:
Peng Zhou;De Tang;Dongmei Xiao

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在本文中,我们主要研究一般竞争抛物线系统的种群动态,包括扩散和平流。对于此类系统,我们提供了一种通过竞争系数 b 和 c 的值来确定全局动态的有效方法。准确地说,首先通过主特征值的单调性在临界竞争值方面给出了两个半平凡稳态的局部动态的清晰图景,然后通过建立共存稳态的唯一性或不存在性来进一步确定b-c平面上不同区域的全局动态。我们的结果通过删除两个条件(参见下面的(A 1)和(A 2))在很大程度上扩展了之前的工作[32]。
In this paper, we mainly investigate the population dynamics of a general competitive parabolic system including both diffusion and advection. For such a class of systems, we provide an efficient way to determine the global dynamics by values of competition coefficients b and c. Precisely, a clear picture on the local dynamics of the two semi-trivial steady states is firstly given in terms of critical competition values by the monotonicity of the principal eigenvalue, and then a further determination on the global dynamics in different regions on the b-c plane is presented by establishing the uniqueness or non-existence of coexistence steady states. Our results extend largely those in a previous work [32] by removing two conditions (see (A 1) and (A 2) below).
DOI: 10.1007/bf02570833
发表时间: 1992
影响因子: 0.8
作者:
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通讯作者: G. Sweers
DOI: --
发表时间: 1984-02
期刊: Journal of the Faculty of Science, the University of Tokyo. Sect. 1 A, Mathematics
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