在基于eDNA的生物多样性评估和管理中,被忽视的虚假阳性源
Wei Xiong1, Hugh J MacIsaac2, Aibin Zhan3
1Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian District, Beijing, 100085, China.
Journal of environmental management
|April 24, 2024
概括
经过处理的废水污水可能会导致环境DNA (eDNA) 生物多样性评估中的错误阳性. 这种eDNA污染源于经过处理的废水,无论处理方法如何,都会发生,影响城市水生生态系统.
科学领域:
- 环境科学 环境科学
- 分子生态学分子生态学
- 保护生物学 保护生物学
背景情况:
- 城市水生生态系统中的生物多样性保护对人类福祉至关重要.
- 环境DNA (eDNA) 是一种广泛采用的生物多样性评估方法.
- 经过处理的废水污水是潜在的,但却被忽视的eDNA污染源.
研究的目的:
- 在基于eDNA的生物多样性评估中,确定经过处理的废水废水是虚假阳性的重要来源.
- 调查不同废水处理过程中eDNA污染的普遍性.
- 在生物多样性监测中提出减轻eDNA污染的解决方案.
主要方法:
- 从废水废水中收集并进行eDNA的元编码.
- 测试三种二级处理过程中的废水,在三级处理升级之前和之后进行.
- 对检测到的鱼类类 (48种) 进行分析,以确定eDNA的来源.
主要成果:
- 在所有测试处理过程的废水中检测到各种本地和非本地鱼类的eDNA (48种种类).
- 无论具体的处理方法或升级,都观察到eDNA污染.
- 这表明处理过的废水中持续释放eDNA.
结论:
- 经过处理的废水废水是eDNA污染的重要来源,导致生物多样性评估中的错误阳性.
- 废水造成的eDNA污染可能会损害生态监测和保护工作的准确性.
- 对于可靠的基于eDNA的生物多样性研究,需要技术解决方案来尽量减少eDNA污染.
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