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强化养殖改变了沉积物中的微生物调节的蓝碳储存

Xin Sun¹, Yihua Sun², Peilong Li³

¹Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao, PR China; State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.

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概括

养殖促进了沿海的碳储存,但减少了有机物质的稳定性. 微生物,特别是微生物死体,是沉积物中碳积累的关键驱动因素,影响和硫循环.

科学领域:

海洋生态海洋生态学
生物地质化学生物地质化学
微生物生态学微生物生态学

背景情况:

养殖通过增加有机物沉积,大大改变了沿海生态系统.
海洋沉积物中的微生物群落对于营养循环和碳储存至关重要.
微生物在密集水产养殖中对碳捕获的具体作用尚不清楚.

研究的目的:

研究养殖场沉积物中的微生物死体和生物地球化学过程.
为了将这些微生物指标与相邻的海草床和裸露区域进行比较.
评估微生物死体对水产养殖系统中碳储存的贡献.

主要方法:

从密集养殖场,海草床和裸露区域取沉积物样本.
对微生物死体和有机碳含量的分析.
测量和硫循环路径.
碳利用效率 (CUE) 的应用来评估微生物碳循环.
功能性元基因组分析以确定微生物代谢途径.

主要成果:

养殖增加了表面沉积物有机碳,但降低了其稳定性.
微生物死体是养殖场沉积物中沉积有机碳的主要驱动因素.
在息地之间观察到不同的微生物代谢途径和/硫循环.
在养殖场和海草床之间发现了CUE和有机碳之间的对比关系.

结论:

微生物死体在养殖系统中的蓝色碳储存中起着至关重要的作用.
养殖场中的生物沉积塑造了微生物功能和生物地化学循环.
这些发现为沿海碳储存机制提供了新的见解,超越了植被生态系统.

关键词:

水产养殖生态学水产养殖生态学蓝色碳是一种蓝色碳.碳使用效率的碳使用效率.沿海沉积物的沉积物微生物死体是微生物死体.培养的养殖方式

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