Scholarlink

<p>Existing discrete amensalism models often overlook intraspecific density dependence. This paper introduces an additive Allee effect to construct a novel discrete-time amensalism system, aiming to reveal its profound impact on population dynamics. The study reveals that under a weak Allee effect, population persistence requires maintaining the population size above a critical survival threshold; whereas a strong Allee effect leads to the extinction of the amensal population without impacting the other. The research elucidates a complete dynamic transition pathway from "coexistence" through "bistability" to eventual "extinction," providing a key theoretical basis for the conservation of population susceptible to Allee effects in amensalistic systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Dynamic Analysis of a Discrete Amensalism Model with Additive Allee Effect on the First Population

  • 期刊论文

  • 发表日期：

    2026年1月17日

查看全文
  • Yuting Huang,
  • Fengde Chen,
  • Lijuan Chen,
  • Zhong Li

摘要

Existing discrete amensalism models often overlook intraspecific density dependence. This paper introduces an additive Allee effect to construct a novel discrete-time amensalism system, aiming to reveal its profound impact on population dynamics. The study reveals that under a weak Allee effect, population persistence requires maintaining the population size above a critical survival threshold; whereas a strong Allee effect leads to the extinction of the amensal population without impacting the other. The research elucidates a complete dynamic transition pathway from "coexistence" through "bistability" to eventual "extinction," providing a key theoretical basis for the conservation of population susceptible to Allee effects in amensalistic systems.