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哺乳动物中等捕食者的季节性变化 在屏障岛群岛综合体上的时空重叠
Timothy D Bransford1, Spencer A Harris1,2,3, Elizabeth A Forys3,4
1Animal Studies Discipline, Eckerd College, St. Petersburg, FL 33711, USA.
Animals : an open access journal from MDPI
|August 29, 2024
概括
在佛罗里达州,大猩猩,猫头和子等中外掠食者物种.
科学领域:
- 生态生态学 生态生态学
- 野生动物生态生态学
- 保护生物学 保护生物学
背景情况:
- 人类主导的景观往往缺乏顶峰捕食者,导致复杂的中等捕食者动态.
- 中间掠食者群体可以表现出不同的时空分区,受季节性资源可用性的影响.
研究的目的:
- 为了研究一个屏障岛综合体中中掠食者之间的季节性时空和空间的重叠.
- 了解环境因素如何影响食动物的相互作用和活动模式.
主要方法:
- 美国佛罗里达州福特德索托县公园的摄像头捕捉 (19台摄像头) (2021年2月 - 2023年7月).
- 分析了三个关键物种的检测数据:大猩猩 (Canis latrans),弗吉尼亚野马 (Didelphis virginiana) 和子 (Procyon lotor).
- 一般线性混合模型和重叠系数用于评估时间活动和关联.
主要成果:
- 在雨季期间检测到的野狼-子和子-子是积极相关的.
- 在干旱季节,子和子的关联仍然存在,子更喜欢红树林息地.
- 这三种物种都根据季节性调整时间活动,在干旱季节占据不同的时间.
结论:
- 资源可用性的季节性变化推动了中等掠食者中独特的时间区分.
- 公园的孤立和发达性质可能会导致中等掠食者社区的不稳定.
- 了解这些动态对于保护脆弱的鸟和海至关重要.
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