微生物变化,包括甲原体,受物种化影响,在无氧湿地环境中发生
Gi-Yong Jung1, Ji-Hyun Park2, Young-Soo Han2
1Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources, Gwahak-ro 124, Yuseong-gu, Daejeon, 34132, Republic of Korea.
Journal of environmental management
|February 3, 2025
概括
在湿地中的无机 (iAs(V)) 通过对甲原体的有毒作用来抑制甲的产生,而二甲基酸 (DMA(V)) 的影响最小. 物种化影响微生物活动和甲排放.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 地质化学 地质化学
背景情况:
- 自然水中的污染是普遍存在的,源于人类活动和地质来源.
- 不同物种对微生物群落,特别是甲基生物的影响尚不清楚.
- 甲基生物在湿地生态系统中的甲生产中发挥着至关重要的作用.
研究的目的:
- 研究无机 (iAs(V)) 和二甲基酸 (DMA(V)) 对湿地沉积物的甲基生成的影响.
- 分析物种变化及其与甲生产随时间的相关性.
- 评估对微生物多样性和活性的影响.
主要方法:
- 用iAs(V) 和DMA(V) 化湿地沉积物批量.
- 使用X射线吸收精细结构 (XAFS) 监测超级生物中的物种化.
- 测量甲生产速度的方法.
- 微生物多样性的分析.
主要成果:
- 无机 (iAs(V)) 被减少到有毒的iAs(III),抑制了甲原活性和甲生产.
- 甲基酸 (DMA(V)) 对甲产生的影响很小.
- 沉积物中的物种化动态直接影响了甲素活性.
结论:
- 物种化对湿地中的微生物群落产生重大影响,影响甲生产.
- 无机物种对甲基生物有很大的风险,而DMA (V) 的危害较小.
- 了解在湿地中的作用,可以为规范甲排放的策略提供信息.
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