来自季节性优辛性沿海生态系统的沉积物显示出高循环潜力
Isabel M L Rigutto1, Ştefania C Sburlan1, Lars W P de Bont1
1Department of Microbiology, Radboud Institute for Biological and Environmental Sciences, Radboud University, Nijmegen, the Netherlands.
Environmental microbiology
|July 2, 2025
概括
沿海沉积物显示出通过脱和异型酸盐降解为 (DNRA) 的提取的高潜力. 这些过程对于缓解肥胖和帮助沿海生态系统恢复工作至关重要.
科学领域:
- 环境微生物学 环境微生物学
- 生物地质化学生物地质化学
- 沿海生态 沿海生态
背景情况:
- 沿海生态系统面临着因环氧化和脱氧化的威胁,影响循环.
- 了解微生物循环对于管理这些敏感环境至关重要.
研究的目的:
- 调查微生物循环潜力在一个季节性 euxinic 沿海生态系统 (格雷维林根湖,荷兰).
- 评估氨氧化,酸盐降解和DNRA在去除中的作用.
主要方法:
- 沉积物采样在冬季和夏季.
- 对于变化的微生物活性测试.
- 潜在反应速率的量化.
- 检测关键的循环基因.
主要成果:
- 观察到显著的氨氧化潜力,即使在无氧层.
- 酸盐,酸盐和氧化的降解潜力很高,特别是在夏季的表面沉积物中.
- 脱和DNRA是主要的酸盐去除途径,DNRA随着深度和电子捐赠者的可用性而增加.
- 没有检测到无氧氨氧化 (anammox).
结论:
- 优性沿海沉积物具有大量的去除能力.
- 这些发现支持微生物过程在沿海生态系统恢复战略中的潜力.
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