摘要详情
1037 / 2024-09-20 09:27:16
Distribution patterns and regulatory mechanisms of bacterial metabolism in the euphotic and mesopelagic zones of the South China Sea and the western Pacific Ocean
Bacterial carbon demand, Euphotic and mesopelagic, in vivo INT, South China Sea, western Pacific Ocean
摘要录用
Microbial metabolism plays a critical role in global carbon cycling, yet our understanding of bacterial metabolic processes across the full depth of tropical oligotrophic ocean systems remains incomplete. The South China Sea (SCS) and Western Pacific (WP), as contrasting oligotrophic environments, provide an ideal setting to investigate this unresolved issue. This study presented a comprehensive analysis of bacterial carbon demand (BCD) from the euphotic to the mesopelagic zone in both regions, revealing distinct drivers of bacterial metabolism at different depths. In the euphotic zone, BCD was closely linked to biotic factors such as bacterial abundance and net primary production, with the SCS exhibiting higher bacterial metabolic activity compared to the WP. Below the euphotic zone, dissolved organic carbon availability became the critical limiting factor, with the WP supporting stronger bacterial metabolism due to more efficient organic matter retention. These findings highlighted the regional variability in carbon sequestration efficiency between the SCS and WP, offering new insights into the biological carbon pump. As climate change intensifies, understanding how microbial metabolism modulates carbon export and long-term storage is increasingly critical to predicting shifts in the carbon sink capacity of marine ecosystems.
重要日期
-
会议日期
01月13日
2025
至01月17日
2025
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09月27日 2024
初稿截稿日期
-
01月17日 2025
注册截止日期
主办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
承办单位
State Key Laboratory of Marine Environmental Science, Xiamen University
Department of Earth Sciences, National Natural Science Foundation of China
Department of Earth Sciences, National Natural Science Foundation of China
联系方式
- Kejing GU
- xm******@xmu.edu.cn
- +86*********
