两个物种与"不平滑"的Allee机制竞争:在气候变化下的大豆虫种群动态的应用
Aniket Banerjee1, Urvashi Verma2, Margaret T Lewis3
1Sorbonne Université, Université Paris Cité, CNRS, Laboratoire Jacques-Louis Lions, F-75005 Paris, France.
Mathematical biosciences and engineering : MBE
|March 14, 2025
概括
气候变化可能会增加洪水,影响大豆虫种群. 数学模型显示,Allee效应可以改变竞争动态,可能扭转害虫排斥,并为这种入侵性昆虫的管理策略提供信息.
科学领域:
- 生态生态学 生态生态学
- 数学生物学 数学生物学
- 侵袭性物种管理 侵袭性物种管理
背景情况:
- 豆 (Aphis glycines) 是美国中北部的主要入侵性害虫.
- 越来越多地观察到,在非生物压力 (例如,洪水) 下,虫生物型之间的差异性适应性.
- 预计气候变化将增加该地区的洪水频率,需要更新害虫管理模型.
研究的目的:
- 对Lotka-Volterra竞争模型的非平滑Allee效应的影响进行调查.
- 探索这些机制如何影响竞争物种的动态,特别是在入侵性害虫的背景下.
- 在不断变化的气候条件下,为大豆虫害管理策略提供信息.
主要方法:
- 开发了两种Lotka-Volterra竞争模型,其中包括非光滑的Allee类型机制.
- 在普通微分方程 (ODE) 和空间显式框架中分析了模型.
- 研究了艾利效应在较弱竞争对手中的存在如何影响人口动态.
主要成果:
- 包括非平滑的Allee效应显著改变了经典的竞争动态.
- 在较弱的竞争对手中,Allee效应可以诱导双稳定性,从而导致替代的稳定状态.
- 观察到竞争排斥的逆转,较弱的竞争对手可以持续存在甚至占据主导地位.
结论:
- 使用Allee效应的数学模型为环境变化下的入侵物种动态提供了关键的见解.
- 带效应可以导致意外的种群动态,如竞争性排斥逆转,在害虫物种,如大豆虫.
- 鉴于气候变化和洪水增加,这些发现对于开发适应性害虫管理战略至关重要.
关键词:
艾利效应是一种效应.双稳定性的双稳定性两个分叉的分叉.气候变化 气候变化 气候变化这是一种共存,共存.不同的健身差异.有限时间的灭绝灭绝.不平滑的动态系统系统.反应-扩散系统的反应-扩散系统.控制大豆虫的控制更多相关视频
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