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Underestimating Carbon Export in Oligotrophic Ocean: Evidence From Transparent Exopolymer Particles in Western Pacific Seawaters

文献类型：期刊论文

作者Tian, Detong3,4; Li, Xuegang1,2,3,4; Song, Jinming1,2,3,4; Wang, Qidong1,4; Zhao, Feng1,2,3,4; Ma, Jun1,4; Liu, Shanshan1,4; Yuan, Huamao1,2,3,4; Duan, Liqin1,2,3,4
刊名JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
出版日期2025-12-13
卷号130期号:12页码:18
关键词transparent exopolymer particles (TEP) particulate organic carbon (POC) oligotrophic ocean vertical carbon transport Pelagibacter
ISSN号2169-9275
DOI10.1029/2025JC022703
通讯作者Li, Xuegang(lixuegang@qdio.ac.cn) ; Song, Jinming(jmsong@qdio.ac.cn)
英文摘要Oligotrophic ocean is generally characterized by lower primary productivity, which has traditionally been considered to result in reduced transport of particulate organic carbon (POC) to the deep ocean compared to high-productivity regions. However, our findings challenge this paradigm based on studying transparent exopolymer particles (TEP) in the western tropical North Pacific (WTNP). This paper systematically examines the formation and distribution of TEP across the 0-2,000 m depth range in the WTNP, analyzes the influence of hydrodynamic factors on TEP dynamics, and investigates the role of Pelagibacter, a dominant bacterium in oligotrophic waters, in facilitating in situ TEP production. Despite low TEP concentrations in the water column (7.53-34.22 mu g Xeq/L), the proportion of TEP-C within POC remained stable with increasing depth. Furthermore, the vertical transport efficiency of POC in oligotrophic waters was significantly higher than in high-productivity regions, indicating that TEP plays a crucial yet overlooked role in facilitating the deep transport of POC in oligotrophic environments. Given this unique promotion mechanism, we proposed that the amount of POC transported to the deep oligotrophic ocean has been underestimated by at least fivefold.
资助项目Qingdao Postdoctoral Applied Research Project[QDBSH20240101018] ; Shandong Provincial Postdoctoral Foundation Project[SDCX-ZG-202400181] ; Laoshan Laboratory[LSKJ202204001] ; Laoshan Laboratory[LSKJ202205001] ; National Natural Science Foundation of China[42476204] ; National Natural Science Foundation of China[42176200] ; National Natural Science Foundation of China[42206135] ; National Natural Science Foundation of China[42049909] ; National Key Research and Development Program[2022YFC3104305] ; Postdoctoral Fellowship Program of CPSF[GZC20232705]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:001637476800001
出版者AMER GEOPHYSICAL UNION
源URL[http://ir.qdio.ac.cn/handle/337002/204460]  
专题中国科学院海洋研究所
通讯作者Li, Xuegang; Song, Jinming
作者单位1.Qingdao Marine Sci & Technol Ctr, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Tian, Detong,Li, Xuegang,Song, Jinming,et al. Underestimating Carbon Export in Oligotrophic Ocean: Evidence From Transparent Exopolymer Particles in Western Pacific Seawaters[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2025,130(12):18.
APA Tian, Detong.,Li, Xuegang.,Song, Jinming.,Wang, Qidong.,Zhao, Feng.,...&Duan, Liqin.(2025).Underestimating Carbon Export in Oligotrophic Ocean: Evidence From Transparent Exopolymer Particles in Western Pacific Seawaters.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,130(12),18.
MLA Tian, Detong,et al."Underestimating Carbon Export in Oligotrophic Ocean: Evidence From Transparent Exopolymer Particles in Western Pacific Seawaters".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 130.12(2025):18.

入库方式： OAI收割

来源：海洋研究所

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