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Bacterial reworking of particulate organic matter in a dynamic marginal sea: Implications for carbon sequestration

文献类型：期刊论文

作者Guo, Jinqiang1,3,7,8,9; Shen, Yuan5,6; Yuan, Huamao1,2,7,8,9; Song, Jinming1,2,7,8,9; Li, Xuegang1,7,8,9; Duan, Liqin1,7,8,9; Li, Ning4,7,8,9
刊名ORGANIC GEOCHEMISTRY
出版日期2023-05-01
卷号179页码:9
ISSN号0146-6380
关键词Particulate organic matter Bacterial reworking Amino sugars South Yellow Sea Marginal sea
DOI10.1016/j.orggeochem.2023.104583
通讯作者Yuan, Huamao(yuanhuamao@qdio.ac.cn) ; Song, Jinming(jmsong@qdio.ac.cn)
英文摘要Concentrations of particulate organic carbon (POC) and total hydrolyzable amino sugars (THAS) were measured along a transect of the dynamic South Yellow Sea (SYS) to investigate the bioreactivity and bacterial reworking of particulate organic matter (POM). Results showed that POM bioavailability was linked with primary production, as revealed by the significant correlation between chlorophyll-a concentrations and the diagenetic indicator glucosamine/galactosamine (GlcN/GalN). Production of bioavailable POM could rapidly stimulate microbial activity, generating hot spots of heterotrophic alteration. Lower GlcN/GalN ratios (<3) observed in the entire SYS indicate that POM underwent extensive microbial alteration. In particular, extremely low GlcN/GalN ratios (similar to 0.7) were found in the Yellow Sea Cold Water Mass, reflecting high bacterial alteration of POM. Estimates based on the bacterial biomarker muramic acid showed that on average similar to 13% of POM in the SYS was of bacterial origin. Elevated bacterial contributions were found in both nearshore and offshore areas. Strong mixing in the nearshore and the presence of cyclonic eddies in offshore waters may increase the residence time of POM in the water column and thus promote bacterial transformation of POM. Overall, our findings indicate that bacterial reworking of POM varies with productivity and that the extensive bacterial transformation of the remaining POM observed in the water column probably enhances long-term carbon sequestration.
WOS关键词ZOOPLANKTON FECAL PELLETS ; YELLOW SEA ; AMINO-SUGARS ; PHYTOPLANKTON COMMUNITY ; MARINE SNOW ; OCEAN ; PEPTIDOGLYCAN ; NUTRIENTS ; SINKING ; FLUXES
资助项目Laoshan Laboratory[LSKJ202204001] ; National Natural Science Foundation of China[42276038] ; National Natural Science Foundation of China[41976037] ; National Natural Science Foundation of China[42106040] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050501] ; Key Project of the Center for Ocean Mega-Science of the Chinese Academy of Sciences[COMS2019Q12] ; Two-Hundred Talents Plan of the Yantai Scholar Project Special Funding ; Shandong Provincial Natural Science Foundation[ZR2020YQ28] ; Fundamental Research Funds for the Central Universities[20720210076] ; China Scholarship Council (CSC) ; Deutscher Akademischer Austauschdienst (DAAD)
WOS研究方向Geochemistry & Geophysics
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:001049003400001
源URL[http://ir.qdio.ac.cn/handle/337002/182765]  
专题海洋研究所_海洋生态与环境科学重点实验室
通讯作者Yuan, Huamao; Song, Jinming
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
3.GEOMAR Helmholtz Ctr Ocean Res Kiel, Marine Biogeochem Div, Kiel, Germany
4.Chinese Acad Sci, Inst Oceanol, Publ Technol Serv Ctr, Qingdao, Peoples R China
5.Xiamen Univ, Coll Ocean & Earth Sci, Xiamen, Peoples R China
6.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China
7.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
8.Univ Chinese Acad Sci, Beijing, Peoples R China
9.Laoshan Lab, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Jinqiang,Shen, Yuan,Yuan, Huamao,et al. Bacterial reworking of particulate organic matter in a dynamic marginal sea: Implications for carbon sequestration[J]. ORGANIC GEOCHEMISTRY,2023,179:9.
APA Guo, Jinqiang.,Shen, Yuan.,Yuan, Huamao.,Song, Jinming.,Li, Xuegang.,...&Li, Ning.(2023).Bacterial reworking of particulate organic matter in a dynamic marginal sea: Implications for carbon sequestration.ORGANIC GEOCHEMISTRY,179,9.
MLA Guo, Jinqiang,et al."Bacterial reworking of particulate organic matter in a dynamic marginal sea: Implications for carbon sequestration".ORGANIC GEOCHEMISTRY 179(2023):9.

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来源：海洋研究所

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