人类活动会影响沿海沉积物的多样化的自营性群体
Bo Peng1, Min Wang2, Yanli Wu2
1Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; Research Center of Low Carbon Economy for Guangzhou Region, Guangzhou, China.
Environmental pollution (Barking, Essex : 1987)
|August 28, 2024
概括
沿海自营植物对于碳捕获至关重要. 工业污染和红树林存在等人类活动显著改变了这些社区,影响了沉积物中的碳储存和元素循环.
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
- 环境微生物学 环境微生物学
背景情况:
- 沿海沉积物对于碳捕获至关重要.
- 土自营植物显著影响碳捕集过程.
- 人类活动可能会影响沿海生态系统及其功能.
研究的目的:
- 调查人类活动对沿海沉积物中土自养群体的影响.
- 了解重金属和微核细胞如何影响自营成分.
- 评估红树林在改变沉积物微生物群落和碳捕获中的作用.
主要方法:
- 16S rRNA和18S rRNA基因的高通量测序被用来识别 prokaryotic 和 eukaryotic 微型.
- 从中国广东省的各种沿海环境中采集样本,包括城市河口,工业湾,水产区和红树林海岸线.
- 分析的重点是重金属污染,微型真核生物的存在和自性社区结构之间的关系.
主要成果:
- 工业污染 (重金属Cd和Zn) 减少了原生生物和真核生物自营的丰富性.
- 红树林生态系统显著改变了沉积物的原生生物和真核生物组成,增加了自身养的比例.
- 红树林相关的自营养素包括氧化硫细菌,氧化铁细菌和微藻,这表明硫和铁的循环增强与碳封存一起.
结论:
- 人类活动,特别是工业污染,通过改变自营组合,对沿海沉积物的碳捕获产生负面影响.
- 红树林环境促进了向自营性社区的转变,增强了碳捕集和元素循环.
- 了解这些变化对于管理沿海生态系统及其在全球碳预算中的作用至关重要.
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