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Organic Carbon Partitioning under Multiple Stressors in the Ocean
编号：786 访问权限：仅限参会人 更新：2026-08-31 19:07:41 浏览：0次 张贴报告

报告开始：暂无开始时间（Asia/Shanghai）

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摘要
As the largest active carbon reservoir on Earth, the ocean sequesters organic carbon through two major pathways, the biological carbon pump and the microbial carbon pump, which process phytoplankton-fixed organic carbon primarily as particulate organic carbon (POC) and dissolved organic carbon (DOC), respectively. The partitioning of organic carbon between POC and DOC influences the efficiency of the marine carbon sink and its feedback on global climate change. Previous studies have demonstrated that environmental factors including ocean warming, acidification, high light exposure and changes in nutrient supply, can significantly modulate the DOC-POC partitioning. However, the combined effects of multiple environmental drivers, which may interact synergistically or antagonistically, have led to considerable uncertainty and inconsistence observations regarding the response of organic carbon partitioning. Furthermore, most previous studies have focused on individual environmental drivers or specific regional seas, leaving the response patterns and underlying mechanisms of organic carbon partitioning across latitudinal gradients under multiple environmental stressors poorly understood. In this study, we used a series of onboard manipulation experiments across latitudinal nutrient gradients in the Northwest Pacific to evaluate the effects of nutrient addition, ocean acidification, ocean warming, high-light exposure, and their interactive effects on organic carbon partitioning. By quantifying changes in POC and DOC, we aim to determine how multiple environmental stressor regulate organic carbon partitioning across latitudinal zones and help improve predictions of future changes in marine carbon cycle.
 
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报告人
Fan Ye
Xiamen University

稿件作者
Fan Ye Xiamen University
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重要日期

  • 会议日期

    01月12日

    2027

    至

    01月15日

    2027

  • 07月21日 2026

    初稿截稿日期

  • 01月15日 2027

    注册截止日期

主办单位
State Key Laboratory of Marine Environmental Science, Xiamen University (MEL)
Department of Earth Sciences, National Natural Science Foundation of China (NSFC)
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