新热带鸟类中的:对13年暴露数据的综合和招股说明书
Christopher J Sayers1,2,3, David C Evers4, Viviana Ruiz-Gutierrez5
1Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA, 90095, USA. csayers2@ucla.edu.
Ecotoxicology (London, England)
|November 1, 2023
概括
热带鸟类中的污染日益令人担忧,尤其是在金矿附近. 这项研究为新热带鸟类建立了关键的暴露基线,突出了对生物多样性和公共健康的风险.
科学领域:
- 环境毒理学环境毒理学
- 鸟类生态学 鸟类生态学
- 保护科学是一种保护科学.
背景情况:
- 热带生态系统面临越来越多的 (Hg) 污染,特别是来自手工和小规模金矿开采 (ASGM).
- 了解Hg污染影响的差距威胁着新热带地区的生物多样性,这是一个物种丰富的地区.
- 鸟类作为敏感的生物指标来评估Hg暴露及其对整个生态系统的影响.
研究的目的:
- 为了确定新热带地区鸟类的基线 (Hg) 暴露水平.
- 确定影响新热带地区鸟类度的因素.
- 为与Hg污染相关的保护战略和公共卫生倡议提供信息.
主要方法:
- 编制了322个物种中新热带鸟类Hg度 (n=2316) 的最大数据库.
- 分析了来自中美洲,南美洲和西印度群岛9个国家的鸟类的Hg水平.
- 将受ASGM影响的地点与其他地区之间的Hg度进行比较,考虑季节性变化.
主要成果:
- 对于322种新热带鸟类,已建立Hg暴露基线.
- 观察到跨功能群的Hg生物积累,在高热量水平的物种和水生息地中度更高.
- 与其他地点相比,在ASGM影响的地点发现Hg度超过四倍,并注意到季节性差异.
结论:
- 新热带鸟类Hg暴露模式与温带地区一致,表明广泛的生物积累和时空变化.
- 鸟类中Hg水平升高对繁殖成功和生态系统健康构成风险.
- 热带鸟类保护和生态毒理学研究 (TRACE) 倡议为继续研究和国际合作提供了Hg污染影响的框架.
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