在猎物捕食者模型中分析检测静止和动态模式,在猎物的生长中具有繁殖性Allee效应
Subrata Dey1, S Ghorai1, Malay Banerjee2
1Department of Mathematics and Statistics, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
Journal of mathematical biology
|July 3, 2023
概括
猎物动态中的Allee效应可以导致复杂的种群模式,并抑制丰富的悖论. 这项研究揭示了它对捕食者-猎物模型的破坏性影响,产生了不同的空间和时间动态.
科学领域:
- 生态生态学 生态生态学
- 数学生物学 数学生物学
- 人口动态 人口动态
背景情况:
- 艾利效应显著影响着种群动态,特别是在捕食者-猎物系统中.
- 丰富的悖论描述了增加的资源如何破坏人口的稳定.
- 贝丁顿-德安吉利斯功能反应模型捕食者食行为.
研究的目的:
- 研究艾利生殖效应对具有贝丁顿-德安吉利斯功能反应的猎物-掠食者模型的影响.
- 分析时间和时空动态,包括分叉和模式形成.
- 探索复杂的动态模式的产生,如移动的波浪和混乱.
主要方法:
- 在时间模型中分析局部和全球分叉.
- 确定时空系统中异质稳定状态解决方案的存在和不存在.
- 数字分叉技术用于识别静止和局部模式解决方案.
- 调查图灵不稳定条件和数值模拟的模式演变.
主要成果:
- 生殖的Allee效应破坏了猎物-掠食者模型中的共存平衡.
- 虽然满足了图灵不稳定条件,但图灵模式是暂时的.
- 确定了各种静止解决方案,包括模式依赖的图灵和局部模式.
- 产生了复杂的动态,如移动的波浪,移动的脉冲和时空混乱.
结论:
- 生殖的Allee效应在捕食者-猎物模型中引入了复杂的动态和模式形成.
- 这些发现提供了对具有不同功能反应的类似模型中的模式生成的洞察力.
- 了解这些动态对于生态保护和管理战略至关重要.
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