在Rosenzweig-MacArthur系统中的暂时混乱和记忆效应与消费率的动态
Przemysław Gawroński1, Jarosław Kwapień2, Krzysztof Kułakowski1
1Faculty of Physics and Applied Computer Science, AGH University of Krakow, al. Mickiewicza 30, PL-30059 Kraków, Poland.
Physical review. E
|April 18, 2024
概括
两个资源的生态模型的稳定性取决于初始消费率. 这项研究揭示了Rosenzweig-MacArthur模型中资源灭绝和暂时混乱如何出现.
科学领域:
- 生态生态学 生态生态学
- 数学生物学 数学生物学
- 理论生态学理论生态学
背景情况:
- 罗森茨瓦伊格-麦克阿瑟模型描述了一个消费者和多个资源的掠食者-猎物动态.
- 最近的扩展包括为消费者优化的消费率 (βi).
- 一个β1 + β2 = 1模型的约束限制了消费者对资源的关注.
研究的目的:
- 在两种资源系统中研究向资源灭绝的过渡.
- 确定两种资源稳定性对初始消费率 (βi) 的依赖.
- 在模型的时间动态中识别暂时混乱的特征.
主要方法:
- 分析一个消费者和两个资源的Rosenzweig-MacArthur方程.
- 整合了优化和受限制的消费率 (β1 + β2 = 1).
- 检查系统稳定性和时间演变的混乱迹象.
主要成果:
- 两个资源共存阶段的稳定性对消费率 (βi) 的初始值非常敏感.
- 特定的初始条件可以导致一种资源的灭绝.
- 在系统的时间演变中观察到过渡的混乱动态.
结论:
- 最初的消费者资源分配策略对生态稳定性和资源持久性产生了重大影响.
- 该模型表明,在某些条件下,暂时的混乱可以成为生态动态的特征.
- 了解这些动态对于预测生态系统的行为和稳定性至关重要.
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