Global dynamics of a Lotka-Volterra competition-diffusion system in advective homogeneous environments
Global dynamics of a Lotka-Volterra competition-diffusion system in advective homogeneous environments
复制标题
平流均质环境中 Lotka-Volterra 竞争扩散系统的全局动力学
DOI:
10.1016/j.jde.2020.01.011
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发表时间:
2020-07
影响因子:
2.4
通讯作者:
Yuming Chen
中科院分区:
文献类型:
--
作者:
De Tang;Yuming Chen
In this paper, we mainly study a two-species competition model in a one-dimensional advective homogeneous environment, where the two species are identical except their diffusion rates. One interesting feature of the model is that the boundary condition at the downstream end represents a net loss of individuals, which is tuned by a parameter b to measure the magnitude of the loss. When the upstream end has the no-flux condition, Lou and Zhou (2015)[11] have confirmed that large diffusion rate is more favorable when 0≤ b< 1. Here we consider the case where the upstream end has the free-flow condition, which means that the upstream end is linked to a lake. We firstly investigate the corresponding single species model. Here we establish the existence and uniqueness of positive steady states. Then for the two-species model, we find that the parameter b can be regarded as a bifurcation parameter. Precisely, when 0≤ b< 1, large diffusion rate is more favorable while when b> 1, small diffusion rate is selected (if exists). When b= 1, the system is degenerate in the sense that there is a compact global attractor consisting of a continuum of steady states.
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DOI:
10.1007/s00526-016-1021-8
发表时间:
2016-06
影响因子:
2.1
作者:
Xiao-Qiang Zhao;Peng Zhou
通讯作者:
Xiao-Qiang Zhao;Peng Zhou
DOI:
10.1016/j.nonrwa.2018.11.011
发表时间:
2019-06
期刊:
Nonlinear Analysis: Real World Applications
影响因子:
--
作者:
Fangfang Xu;Wenzhen Gan
通讯作者:
Fangfang Xu;Wenzhen Gan
影响因子:
1.7
作者:
Zhou Peng;Xiao Dongmei
通讯作者:
Xiao Dongmei
影响因子:
1.4
作者:
HASTINGS, A
通讯作者:
HASTINGS, A
影响因子:
2
作者:
Fangfang Xu;Wenzhen Gan;D. Tang
通讯作者:
Fangfang Xu;Wenzhen Gan;D. Tang