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多层次的生态相互作用:天气,森林极端事件和种子生产对松鼠种群动态的影响
Maria Vittoria Mazzamuto1, Francesca Santicchia2, Damiano G Preatoni2
1Haub School of Environment and Natural Resources, University of Wyoming, Laramie, WY, USA; Department of Life Sciences and Systems Biology, University of Turin, Turin, Italy; Department of Theoretical and Applied Sciences, University of Insubria, Varese, Italy.
The Science of the total environment
|February 7, 2025
概括
不同地区的松鼠种群对食物供应和天气的反应相似. 这项研究强调了气候变化如何通过影响森林资源和动态而影响野生动物.
科学领域:
- 生态生态学 生态生态学
- 野生动物保护 野生动物保护
- 气候变化生物学 气候变化生物学
背景情况:
- 生产者-消费者系统受到天气和资源可用性等环境因素的影响.
- 松鼠种群表现出不同的领土和非领土行为,影响其种群动态.
- 了解这些动态对于气候变化下的野生动物保护和森林管理至关重要.
研究的目的:
- 为了比较弗里蒙特松鼠 (Tamiasciurus fremonti) 和欧亚红松鼠 (Sciurus vulgaris) 的种群密度驱动因素.
- 调查森林组成,种子资源,天气和气候变化引起的干扰对松鼠种群的影响.
- 探索松鼠种群动态中潜在的空间和时间同步.
主要方法:
- 对两种不同的松鼠物种的长期,多地点数据集进行比较分析.
- 集成现场数据,遥感森林干扰数据和多因素建模.
- 调查密度依赖的模式,对资源的自下而上的反应,以及非生物影响.
主要成果:
- 两种松鼠都表现出密度依赖的种群振荡 (弗里蒙特的每年一次,欧亚红色的两年一次).
- 较高的松鼠密度始终与增加的树种产量和更高的春季温度有关.
- 没有在不同地点或时间观察到同步的人口趋势,但发现了对资源和非生物因素的一致反应.
结论:
- 在生态上不同的松鼠种群共享共同的机制,以响应资源的可用性和非生物条件.
- 气候,森林动态和气候变化引起的干扰显著影响脉冲资源系统中的人口流程.
- 调查结果提供了全球相关的洞察力,了解生产者与消费者的互动,野生动物保护和环境变化中的森林管理策略.
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