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使用摄像头陷的统计方法来评估跨物种的消费性竞争和短暂资源使用中的功能冗余
Yoshihiro Nakashima1, Akane Hashizume1, Akane Kanda1
1College of Bioresource Science Nihon University Fujisawa Kanagawa Japan.
Ecology and evolution
|July 25, 2024
概括
这项研究引入了一种新的模型来量化动物竞争和生态系统功能损失,揭示了入侵性松鼠对鸟类繁殖成功产生了47%的重大影响. 该模型还显示了狐和子犬之间对资源的不对称竞争.
科学领域:
- 生态生态学 生态生态学
- 野生动物生物学 野生动物生物学
- 保护科学 保护科学
背景情况:
- 摄像头陷对于野生动物研究至关重要,但受到观察审查的限制,其中占主导地位的物种掩盖了其他人的资源使用.
- 了解跨物种竞争和功能冗余对于生态系统管理至关重要.
研究的目的:
- 延长时间到检测占用率建模,以量化跨种类消费竞争和功能冗余.
- 开发竞争强度指数和独特功能贡献等指标,以评估资源竞争的影响.
主要方法:
- 适应时间到检测占用率建模,以处理来自竞争对手物种资源使用的受审查数据.
- 估计没有竞争对手的潜在资源使用,并使用竞争强度指数量化损失.
- 计算的独特功能性贡献作为物种移除后的净功能损失,考虑到资源退化和获取.
主要成果:
- 将框架应用于入侵性松鼠对鸟巢的掠食和食肉动物之间对尸体的竞争.
- 侵入性松鼠的独特功能贡献为0.47,这表明如果移除,鸟类的繁殖成功可能会增加47%.
- 竞争强度指数是狐的0.17和子犬的0.46,突出显示了不对称的竞争.
结论:
- 开发的框架为分析资源消费者互动和量化竞争效应提供了一个强大的方法.
- 调查结果强调了入侵物种和不对称的竞争动态对生态的影响.
- 这种方法增强了准确的资源消费者交互网络的建设,以保护和管理.
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