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南美松鼠的范围扩张的季节性动态

M Soledad Vazquez^1,2, Ramiro Ripa³, Alberto Scorolli¹

¹GEKKO - Grupo de Estudios en Conservación y Manejo, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670 (8000), Bahía Blanca, Argentina.

Movement ecology

|February 13, 2025

概括

四种松鼠物种正在扩大其范围,随着时间的推移,它们的季节性移动和息地使用变得越来越相似. 这种适应是由气候和土地利用变化驱动的,特别是在城市环境中.

科学领域:

生态生态学生态生态学
动物学动物学
环境科学环境科学

背景情况:

种类范围是动态的,受到气候,生物和人类因素的影响.
分散对于物种适应不断变化的息地和扩大它们的范围至关重要.
这项研究重点研究了四种松鼠物种的分散及其范围的变化.

研究的目的:

为了检查四种松鼠 (Turdus amaurochalinus,T. chiguanco,T. falcklandii,T. rufiventris) 的分散过程.
调查范围扩散和季节性移动之间的相互作用.
了解环境因素如何影响这些范围的变化.

主要方法:

利用了2003年至2023年的eBird记录.
生成热图以可视化物种发生密度随时间和季节的变化.
评估了生物气候和土地覆盖变量对观察到的变化的影响.

主要成果:

在所有四种松鼠物种中观察到显著的范围扩张.
随着时间的推移,发现季节性分布和息地重叠的相似性越来越大.
确定了与物种存在相关的温度和降水变化,以及息地选择的变化.

结论:

范围变化归因于气候,土地利用变化和资源可用性,影响季节性分散.
松树表现出对城市环境的强烈适应,可能减少季节性移动.
这些发现强调了松鼠范围转移的动态性质及其对环境变化的适应能力.

关键词:

这就是Turdus Turdus.发生密度发生密度.范围扩展扩展范围季节性模式季节性模式南美洲南美洲南美洲

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