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In this paper, we consider the diffusive competition problem with a free boundary and sign-changing intrinsic growth rate in heterogeneous time-periodic environment, consisting of an invasive species with density $u$ and a native species…

偏微分方程分析 · 数学 2015-04-24 Qiaoling Chen , Fengquan Li , Feng Wang

In this paper we consider the diffusive competition model consisting of an invasive species with density $u$ and a native species with density $v$, in a radially symmetric setting with free boundary. We assume that $v$ undergoes diffusion…

偏微分方程分析 · 数学 2013-03-05 Yihong Du , Zhigui Lin

In this paper we consider the diffusive competition model with free boundary in the heterogeneous time-periodic environment, in which the variable intrinsic growth rates of invasive and native species may change signs and be "very negative"…

偏微分方程分析 · 数学 2015-04-28 Mingxin Wang

This short paper concerns a diffusive logistic equation with the heterogeneous environment and a free boundary, which is formulated to study the spread of an invasive species, where the free boundary represents the expanding front. A…

偏微分方程分析 · 数学 2014-06-25 Mingxin Wang

We study the diffusive logistic equation with a free boundary in timeperiodic environment. To understand the effect of the dispersal rate $d$, the original habitat radius $h_0$, the spreading capability $\mu$, and the initial density $u_0$…

偏微分方程分析 · 数学 2014-12-09 Qiaoling Chen , Fengquan Li , Feng Wang

We investigate the influence of a shifting environment on the spreading of an invasive species through a model given by the diffusive logistic equation with a free boundary. When the environment is homogeneous and favourable, this model was…

偏微分方程分析 · 数学 2015-08-27 Yihong Du , Lei Wei , Ling Zhou

We study an individual-based model in which two spatially-distributed species, characterized by different diffusivities, compete for resources. We consider three different ecological settings. In the first, diffusing faster has a cost in…

种群与进化 · 定量生物学 2016-01-27 Simone Pigolotti , Roberto Benzi

In this article we investigate two free boundary problems for a Lotka-Volterra competition system in a higher space dimension with sign-changing coefficients. One may be viewed as describing how two competing species invade if they occupy…

偏微分方程分析 · 数学 2015-04-13 Yonggang Zhao , Mingxin Wang

This paper is concerned with a diffusive Lotka-Volterra type competition system with a free boundary in one space dimension. Such a system may be used to describe the invasion of a new species into the habitat of a native competitor. We…

偏微分方程分析 · 数学 2017-10-17 Zhiguo Wang , Hua Nie , Yihong Du

We study a two-species competition model in a patchy advective environment, where the species are subject to both directional drift and undirectional random dispersal between patches and there are losses of individuals in the downstream end…

动力系统 · 数学 2023-03-22 Shanshan Chen , Junping Shi , Zhisheng Shuai , Yixiang Wu

In this paper we consider a free boundary problem which models the spreading of an invasive species whose spreading is enhanced by the changing climate. We assume that the climate is shifting with speed c and obtain a complete…

偏微分方程分析 · 数学 2019-08-13 Yuanyang Hu , Xinan Hao , Xianfa Song , Yihong Du

We investigate the spreading behavior of two invasive species modeled by a Lotka-Volterra diffusive competition system with two free boundaries in a spherically symmetric setting. We show that, for the weak-strong competition case, under…

偏微分方程分析 · 数学 2017-10-17 Yihong Du , Chang-Hong Wu

This is a continuation of our work \cite{dns-part1} to investigate the long-time dynamics of a two species competition model of Lotka-Volterra type with nonlocal diffusions, where the territory (represented by the real line $\R$) of a…

偏微分方程分析 · 数学 2024-03-29 Yihong Du , Wenjie Ni , Linfei Shi

This paper concerns a diffusive logistic equation with a free boundary and sign-changing intrinsic growth rate in heterogeneous time-periodic environment, in which the variable intrinsic growth rate may be "very negative" in a "suitable…

偏微分方程分析 · 数学 2015-09-22 Mingxin Wang

In this paper we investigate a free boundary problem for the diffusive Leslie-Gower prey-predator model with double free boundaries in one space dimension. This system models the expanding of an invasive or new predator species in which the…

偏微分方程分析 · 数学 2017-10-27 Mingxin Wang , Qianying Zhang

In this paper, we study the dynamics of a two-species competition model with two different free boundaries in heterogeneous time-periodic environment, where the two species adopt a combination of random movement and advection upward or…

偏微分方程分析 · 数学 2015-11-26 Qiaoling Chen , Fengquan Li , Feng Wang

We study a competition-diffusion model while performing simultaneous homogenization and strong competition limits. The limit problem is shown to be a Stefan type evolution equation with effective coefficients. We also perform some numerical…

偏微分方程分析 · 数学 2017-10-20 Harsha Hutridurga , Chandrasekhar Venkataraman

Spatial heterogeneity and habitat characteristic are shown to determine the asymptotic profile of the solution to a reaction-diffusion model with free boundary, which describes the moving front of the invasive species. A threshold value…

偏微分方程分析 · 数学 2014-03-26 Chengxia Lei , Zhigui Lin , Qunying Zhang

This paper deals with a free boundary problem of the Lotka-Volterra type prey-predator model with variable intrinsic growth rate for predator over a one dimensional habitat, in which the free boundary represents the spreading front and is…

动力系统 · 数学 2014-03-07 Mingxin Wang

In order to understand how impulsive interventions and environmental perturbations affect dynamics of competitors, we focus on a diffusive competition model with free boundaries and periodic pulses in a temporally heterogeneous environment…

偏微分方程分析 · 数学 2023-09-11 Yue Meng , Zhigui Lin , Carlos Alberto Santos
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