通过微生物群落组成和潜在功能变化的变化来解释沉积物和水中的循环.
Shan Yang1, Meijun Dong1, Huibin Lu1
1Guangdong Environmental Protection Key Laboratory of Microbiology and Ecological Safety, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, China.
Chemosphere
|October 12, 2023
概括
沿海水产养殖中的污染很高,其中酸是主要的污染物. 鱼多种植有效地通过增强微生物功能来降低水平,与单种植不同.
科学领域:
- 环境微生物学环境微生物学
- 水生生地化学 水生生物地化学
- 沿海水产养殖科学与科学
背景情况:
- 人类活动显著改变了水生生态系统中 (N) 生物地球化学循环.
- 沿海水产养殖中高度对渔业和生态系统健康构成威胁.
- 微生物群落及其代谢活动是循环的关键驱动力.
研究的目的:
- 研究微生物对三种不同的沿海水产养殖生态系统中沉积物和水中的循环的贡献.
- 确定占主导地位的物种并评估污染水平.
- 为了比较鱼类单种养殖和鱼多种养殖系统之间的循环微生物功能.
主要方法:
- 在中国广东的三种水产养殖类型进行现场采样.
- 对物种,特别是酸 (NO3−-N) 的分析.
- 参与同化和减少的微生物群体的量化.
- 结构方程建模 (SEM) 的应用,将微生物功能与总 (TN) 变化联系起来.
主要成果:
- 酸 (NO3−-N) 是沉积物和水中占主导地位的形式,这表明污染严重.
- 与鱼类单种养殖相比,鱼多种养殖表现出较高的同化和有氧脱细菌的丰度.
- 多种植系统的NO3−-N度明显低于单种植系统.
- 微生物功能途径,而不是微生物群落组成,更好地解释了总 (TN) 水平的变化.
结论:
- 鱼多种养殖可以通过增强关键微生物循环过程,有效地减轻沿海水产养殖中的污染.
- 微生物的功能能力在调节这些生态系统中循环和污染方面比社区结构更为关键.
- 了解微生物功能对于制定维持健康沿海水产养殖环境的战略至关重要.
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