使用诱和摄像头陷来估计掠夺率和新生儿生存率
Hailey M Boone1, Krishna Pacifici1, Christopher E Moorman1
1Fisheries, Wildlife, and Conservation Biology Program, North Carolina State University, Raleigh, NC, United States of America.
PloS one
|October 24, 2023
概括
估计状新生儿的生存率对于人口动态至关重要. 一种新的摄像机陷和诱方法提供了一种具有成本效益的,非侵入性的方法来评估掠食风险和生存概率.
科学领域:
- 野生动物生态学野生动物生态学
- 保护生物学 保护生物学
- 捕食者-猎物的动态.
背景情况:
- 带的新生儿面临着高的掠食率,影响着种群动态.
- 传统的生存估计方法是侵入性的,昂贵的,可能会带来偏差.
- 准确的捕食者识别与传统技术具有挑战性.
研究的目的:
- 评估一种新的,非侵入性的摄像机陷和诱方法来估计类新生儿的生存率.
- 将新方法的成本效益和努力与传统方法进行比较.
- 确定影响新生儿生存的关键捕食物种.
主要方法:
- 使用的摄像机陷与白尾鹿新生儿诱和香味诱.
- 监测捕食者对诱的反应,对相互作用进行分类 (接近,接触).
- 计算了诱生存概率和分析了捕食者的丰富效应.
主要成果:
- 76.3%的捕食者接近诱;51.1%的人进行了身体接触.
- 诱惑的30天生存概率为0.31 (95% CI = 0.22,0.35). 诱惑的30天生存概率是0.31 (95% CI = 0.22,0.35).
- 更高的捕食者丰富度与新生儿生存概率的降低相关.
- 摄像机诱协议使用了传统方法的一半的努力和三分之一的预算.
结论:
- 摄像机-诱方法为新生儿生存率估计提供了具有成本效益的指数.
- 这种方法有效地识别了影响生存的主要捕食物种.
- 它为传统的现场工作提供了一个不那么侵入性的,更有效的替代方案.
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