巨植物和蓝植物之间制度差异的主导地位调节了湖泊沉积物中的微生物碳封存模式
Hezhong Yuan1, Tong Guan1, Enfeng Liu2
1Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control and Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China.
Water research
|September 29, 2024
概括
宏观植物占主导地位的湖泊比蓝植物占主导地位的湖泊更有效地增强碳捕获. 这种差异是由微生物社区结构和营养水平影响湖泊沉积物中的碳固定驱动的.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生物地质化学生物地质化学
背景情况:
- 湖泊生态系统表现出基于营养负载的独特制度,影响主要的生物型.
- 了解不同营养条件下的湖泊沉积物中的碳捕获对于气候调节至关重要.
研究的目的:
- 调查不同湖泊模式 (巨植物与蓝植物占主导地位) 对碳捕集过程的影响.
- 澄清微生物群落和功能基因在湖泊沉积物中的碳固定中的作用.
主要方法:
- 使用光测量对溶解有机物 (DOM) 的分析.
- 参与碳固定的功能基因 (cbbL,cbbM) 的高通量测序.
- 微生物多样性和微生物群落结构的比较,以巨植物和蓝植物为主.
主要成果:
- 类似于的DOM在含有蓝植物的水域中占主导地位,而类似于酸的DOM在含有巨型植物的水域中占主导地位.
- 微生物同化在两个湖泊系统中显著影响了碳固定.
- 宏菌占主导地位的系统表现出更高的细菌多样性和与碳固定相关的物种丰富性.
结论:
- 由营养负载驱动的湖泊制度转变改变了微生物群落结构,并影响了碳捕集稳定性.
- 主要和罕见的细菌种群都在调节碳封存中发挥作用,以应对营养水平.
- 巨型植物主导的湖泊生态系统显示出更大的碳捕获潜力,有助于减少大气中的碳.
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