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<p>In this paper, we investigate a two-species Lotka-Volterra competition patch model in a Y-shaped river network, where the two species are assumed to be identical except for their random and directed movements. We show that competitive exclusion can occur under certain conditions, i.e., one of the semi-trivial equilibria is globally asymptotically stable. Specifically, if the random dispersal rates of the two species are equal, the species with a smaller drift rate will drive the other species to extinction, which suggests that smaller drift rates are favored.</p>

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Global dynamics of a two-species competition patch model in a Y-shaped river network

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Weifang Yan,
  • Shanshan Chen

摘要

In this paper, we investigate a two-species Lotka-Volterra competition patch model in a Y-shaped river network, where the two species are assumed to be identical except for their random and directed movements. We show that competitive exclusion can occur under certain conditions, i.e., one of the semi-trivial equilibria is globally asymptotically stable. Specifically, if the random dispersal rates of the two species are equal, the species with a smaller drift rate will drive the other species to extinction, which suggests that smaller drift rates are favored.