临时移民对木 (Glyptemys insculpta) 检测能力的影响,对丰富度估计有影响
Allyson N Beard1, Donald J Brown1,2, Eric T Hileman1
1School of Natural Resources, West Virginia University, Morgantown, West Virginia, United States of America.
PloS one
|April 16, 2024
概括
木 (Glyptemys insculpta) 的调查可能会高估其数量. 乌的可用性 (pa) 是非随机的,可检测性 (pd) 随大小增加,违反了当前人口模型假设.
科学领域:
- 野生动物生态生态学
- 保护生物学 保护生物学
- 人口动态 人口动态
背景情况:
- 可靠的种群估计对于管理保护关心的木 (Glyptemys insculpta) 是至关重要的.
- 目前的调查协议假设人口封闭,并且不将可用性 (pa) 与可检测性 (pd) 分开,可能会偏向丰度估计.
- 木是高度流动的,挑战了标准化调查中的封闭假设.
研究的目的:
- 为了评估木可用性 (pa) 是否随机的.
- 为了确定可用性 (pa) 和可检测性 (pd) 是否受人口因素的影响.
- 为了提高木丰度估计的准确性.
主要方法:
- 修改了木调查协议,包括双通路设计.
- 实施了强大的设计捕获-重新捕获模型来估计pa和pd.
- 在明尼苏达州和威斯康星州的14个地点从2017年到2022年进行了调查.
主要成果:
- 发现木的可用性 (pa) 是非随机的.
- 的检测能力 (pd) 随着的长度显著增加.
- 由于违反了假设,目前的种群模型可能会高估木的数量.
结论:
- 标准木调查协议可能会产生偏见的丰度估计.
- 为了更准确的人口评估,需要进行协议和建模修改.
- 了解影响可用性和可检测性的因素是有效保护管理的关键.
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