一个反应-扩散-引进的捕食者-猎物系统的分支分析,延迟
Honghua Bin1, Daifeng Duan2, Junjie Wei1,2
1Department of Mathematics, Jimei University, Jimei, Fujian 361021, China.
Mathematical biosciences and engineering : MBE
|July 28, 2023
概括
这项研究检查了一种具有时间延迟的捕食者-猎物模型,揭示了霍夫分叉. 模拟显示了时间延迟和向导如何影响系统动态.
科学领域:
- 数学生物学 数学生物学
- 理论生态学理论生态学
- 动态系统 动态系统
背景情况:
- 捕食者-猎物模型是生态学的基础.
- 导向和时间延迟引入了复杂的动态.
- 了解这些因素对于生态稳定至关重要.
研究的目的:
- 为了分析一个扩散的捕食者-猎物系统,包括advection和时间延迟.
- 为了研究Hopf分叉的发生作为转换延迟的函数.
- 开发一种方法来确定Hopf双叉方向和稳定性.
主要方法:
- 使用反应扩散模型.
- 应用一个改进的中心分流体减小方法.
- 采用正常形式理论进行分叉分析.
主要成果:
- 霍夫分叉被确定为一个关键的现象.
- 转换延迟 ($ \tau $) 作为一个分叉参数.
- 模拟演示了时间延迟 ($ \tau $) 和引向 ($ \alpha $) 对系统行为的影响.
结论:
- 转换延迟显著影响系统的稳定性.
- 导向在塑造人口动态方面发挥着至关重要的作用.
- 开发的方法为复杂的生态模型提供了洞察力.
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