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Geochemical and microbial controls on methane distribution in coastal sediments: A case study from the Bohai and South Yellow Seas, China
Marine Pollution Bulletin ( IF 5.3 ) Pub Date : 2024-12-12 , DOI: 10.1016/j.marpolbul.2024.117448 Siqi Li, Yu Zhen, Ye Chen, Tiezhu Mi
Marine Pollution Bulletin ( IF 5.3 ) Pub Date : 2024-12-12 , DOI: 10.1016/j.marpolbul.2024.117448 Siqi Li, Yu Zhen, Ye Chen, Tiezhu Mi
CH4 is among the most potent greenhouse gases. In this study, we investigated one of the important CH4 production hotspots, the continental margins. We examined the spatiotemporal distributions of CH4 in sediment cores from the Bohai and South Yellow Seas, China. Using real-time PCR and metagenomic sequencing, we analyzed the microbial communities related to CH4 production. Our results indicated that concentrations of CH4 generally increased with depth gradually, minimal seasonal variation observed between spring and summer. Notably, spatial heterogeneity, rather than temporal variation, was the predominant factor affecting CH4 distribution and methanogen community differences in sediments. Furthermore, the structure of microbial communities, in conjunction with environmental factors, significantly impacts potential CH4 production. These findings provide valuable insights into the mechanisms underlying methane production and its environmental controls in marine sediments.
更新日期：2024-12-12
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