细菌群体的分布模式和社区聚集过程在沉降湖的不同沉积息地
Xingchen Li1, Lei Zhang2, Zhen Shen3
1School of Earth and Environment, Anhui University of Science & Technology, Huainan, 232000, China.
Journal of environmental management
|January 10, 2025
概括
人类活动,如太阳能和沉降湖中的水产养殖,显著改变了沉积物细菌群落,增加了多样性,并将组装过程从决定性转变为随机性,影响了湖泊生态系统.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生态生态学 生态生态学
背景情况:
- 煤矿开采产生的沉降湖泊为光伏 (PV) 发电和水产养殖等替代土地用途提供了潜力.
- 这些用途对湖泊细菌群落的生态影响在很大程度上是未知的.
研究的目的:
- 调查光伏和水产养殖活动如何影响沉降湖中的沉积物细菌群落.
- 为了比较不同湖泊息地的细菌多样性,网络结构和社区聚集过程.
主要方法:
- 从四个息地收集了44个沉积物样本:PV,水产养殖 (AC),组合PV_AC和自然 (不受影响).
- 使用16S rRNA基因测序和统计分析分析了细菌群落.
主要成果:
- 与自然息地相比,PV,AC和PV_AC息地中的细菌α多样性和网络复杂性显著更高.
- 太阳能息地显示出最高的α-多样性,交流息地显示出最高的网络复杂性,PV/PV_AC息地显示出最高的网络稳定性.
- 社区结构在息地之间有很大的差异,有不同的主导类 (Nitrospirota,Firmicute,Actinobacteriota).
- 随机过程 (特别是分散限制) 在人为息地主导着社区聚集,而在自然息地主导着确定性过程 (异质选择).
结论:
- 沉降湖中的人类活动深刻地改变了沉积物中的细菌群落.
- 了解这些变化对于管理沉降湖生态系统及其生态功能至关重要.
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