数学评估温度对沙漠种群动态的影响 数学评估温度对沙漠种群动态的影响
Dejen Ketema Mamo1,2, Mathew N Kinyanjui3, Nourridine Siewe4
1Department of Mathematics, Pan African University Institute for Basic Sciences, Technology, and Innovation, Nairobi, Kenya.
PloS one
|January 24, 2025
概括
这项研究模拟了温度如何影响沙漠虫种群,揭示了温度模型.
科学领域:
- 数学生物学 数学生物学
- 生态生态学 生态生态学
- 虫害管理 虫害管理 虫害管理
背景情况:
- 沙漠虫 (Schistocerca gregaria) 对粮食安全构成重大威胁.
- 人口动态很复杂,受到温度等环境因素的影响.
- 了解阶段过渡 (孤独到群众) 对于控制至关重要.
研究的目的:
- 为沙漠种群动态开发一种新的数学模型.
- 研究温度对所有生命阶段和阶段的特定影响.
- 为了确定驱动人口波动的关键温度依赖参数.
主要方法:
- 开发了一个包含温度依赖参数的非自主数学模型.
- 进行理论分析以探索动态行为 (例如,多个稳定状态).
- 进行了灵敏度分析和数值模拟,以评估温度影响.
主要成果:
- 该模型表现出复杂的动态,包括可能发生人口突然变化的可能性.
- 温度依赖的参数被确定为人口变化的关键驱动因素.
- 模拟显示,最佳温度可以增强生长,而极端温度则会阻碍生长,并可能触发相位过渡.
结论:
- 温度显著影响沙漠虫种群动态和阶段过渡.
- 准确的温度预测对于有效的虫爆发管理至关重要.
- 该模型为预测疫情和优化控制策略提供了洞察力.
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