在水族养殖系统中对氨去除和微生物群落动态的无菌和pH效应
Peyman Derikvand1, Brittany Sauter1, Andrew Keddie1
1Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada.
iScience
|February 16, 2024
概括
优化aquaponics涉及了解微生物生态. 这项研究表明,pH和注射剂显著影响微生物群落,氨去除和植物生长,这对系统效率至关重要.
科学领域:
- 微生物生态学 微生物生态学
- 水上体育系统 水上体育系统
- 环境微生物学 环境微生物学
背景情况:
- 水产养殖系统集水产养殖和水产养殖,依赖微生物群落进行营养循环.
- 优化aquaponics需要了解微生物生态,特别是化过程.
- 影响水族养殖中微生物动态的关键因素包括pH值和使用的微生物注射剂的类型.
研究的目的:
- 研究pH值和注射类型对水系统中氨去除效率的影响.
- 分析微生物群体的组成,以应对不同的pH值和注射条件.
- 确定这些因素对系统整体性能的影响,包括植物生长和鱼类健康.
主要方法:
- 实验室规模的水族养殖系统是用不同的注射剂 (富含comammox与富含氨氧化细菌) 建立的.
- 系统在不同的pH条件下运行 (低:5.8-6.0对高:7.6-7.8).
- 监测了整个系统区间的氨去除率,酸盐积累和微生物群体组成.
主要成果:
- 与氨氧化细菌 (AOB) 丰富的注射剂相比,富含comammox的注射剂导致初始氨积累较低.
- 在AOB丰富的系统中观察到更高的氨去除率和过渡性酸盐积累率.
- 低pH值 (5.8-6.0) 有利于comammox化剂和促进植物生长的微生物,而高pH值 (7.6-7.8) 有利于氧化细菌 (AOB),如*Nitrosomonas*和*Nitrosospira*.
- 较低的pH值条件有助于增强植物生长,而不会对鱼类健康产生负面影响.
结论:
- 水生植物微生物群表现出功能冗余,pH有选择性地影响化种群.
- 型和pH值是启动和优化水族养殖系统的关键参数.
- 通过注射剂选择和pH控制来定制微生物群落可以提高水族养殖系统的效率和生产力.
相关概念视频
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