采样规模的影响:比较估计外界污染物暴露在野外野生动物中的方法
Helen L Bontrager1, Thomas G Hinton2, Kei Okuda3
1Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, SC 29808, USA.
The Science of the total environment
|February 18, 2024
概括
准确的野生动物污染物暴露评估需要详细地绘制污染水平和动物的移动情况. 简单的方法可能会在野生种群的剂量效应研究中产生误导性的结果.
科学领域:
- 环境毒理学环境毒理学
- 野生动物生态学野生动物生态学
- 辐射污染监测监测辐射污染.
背景情况:
- 污染物暴露会影响野生动物健康,需要准确的暴露评估.
- 目前跟踪野生动物暴露的方法往往过于简化了空间污染物分布和动物息地使用.
- 评估野生野生动物的暴露,带来了重大的方法挑战.
研究的目的:
- 评估采样规模如何影响野生动物污染物暴露估计的现实性和保守性.
- 将实际野生动物暴露数据与来自不同空间数据分辨率的估计数据进行比较.
- 为生态风险评估和剂量影响研究提供最佳实践信息.
主要方法:
- 在日本福岛的野猪 (Sus scrofa) 上使用了GPS合污染物监测器,以记录实际的放射性污染暴露.
- 通过将个体动物位置数据与不同尺度的景观级污染分布图相结合,生成暴露估计值.
- 将经验暴露数据与来自不同级别的关于动物移动和污染物存在的空间信息的估计值进行了比较.
主要成果:
- 通过将精细的污染调查与详细的个体动物空间使用数据 (例如,家庭范围) 结合起来,可以实现现实的暴露估计.
- 基于单点陷地点调查的暴露估计没有与实际暴露率的相关性,这可能导致剂量效应研究中的错误结论.
- 对于生态风险分析有用的保守暴露估计,对采样规模不那么敏感,并且可以使用最小的空间数据获得.
结论:
- 准确的剂量效应研究需要考虑细度污染物分布和动物息地使用的关键区域.
- 通常在野生动物研究中使用的简单暴露估计方法可能不反映实际暴露水平.
- 关于采样规模的方法选择对野生动物污染物暴露数据的可靠性和适用性产生重大影响.
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