弗兰肯斯坦矩阵:人口中生命史的变化影响了人口模型的可靠性和预测
Giacomo Rosa1,2, Benedikt R Schmidt3,4, Jean-Paul Léna5
1Department for the Earth, Environment and Life Sciences (DISTAV), University of Genoa, Genoa, Italy.
The Journal of animal ecology
|January 20, 2025
概括
使用混合人口矩阵可以偏向人口统计推断. 然而,从地理或人口统计学上相似的人口中借鉴估计,可以最大限度地减少保护研究中的错误.
科学领域:
- 生态生态学 生态生态学
- 进化的人口学 进化的人口学
- 保护生物学 保护生物学
背景情况:
- 人口矩阵模型对于野生人口人口统计和管理至关重要.
- 混合矩阵,使用来自其他种群的估计,当数据稀缺时很常见.
- 这些混合矩阵可能会忽视人口之间的重要生命史变异,导致错误的结论.
研究的目的:
- 调查使用混合矩阵对人口推断和管理决策的影响.
- 评估如何使用来自不同人口的估计影响人口增长率和弹性预测.
- 在面对息地特定变化的情况下,评估种群矩阵的可靠性.
主要方法:
- 估计18个黄腹 (Bombina variegata) 种群的特定阶段生存率和招募率.
- 通过将特定人口的生命率替换为来自其他人口的估计 (随机,息地,人口或地理邻近) 来创建混合矩阵.
- 在不同的混合矩阵场景下分析了人口增长率和弹性的变化.
主要成果:
- 结合不同种群和息地的数据的混合矩阵在人口预测中引入了偏见.
- 随机采样对不同人群的估计导致了较小的平均偏差,这是由于覆盖各种生活史的大数据集造成的.
- 使用来自地理或人口统计学上相似的人口的估计,显著降低了极端预测错误的风险.
- 从类似的息地类型借鉴显示出潜在的偏差减少,但结果取决于息地.
结论:
- 生活史中的息地特定变化会影响生态和保护中使用的人口矩阵的准确性.
- 当混合矩阵是必要的时,结合生态或人口信息可以减轻偏差.
- 如果此类信息不可用,建议考虑可用参数估计的全部范围,以透明地传达不确定性.
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