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

doi:10.1016/j.orggeochem.2023.104583

	Bacterial reworking of particulate organic matter in a dynamic marginal sea: Implications for carbon sequestration
	Guo, Jinqiang 1,2,3,4,8; Shen, Yuan 5,6; Yuan, Huamao1,2,3,4,9 ; Song, Jinming1,2,3,4,9 ; Li, Xuegang 1,2,3,4; Duan, Liqin 1,2,3,4; Li, Ning 2,3,4,7
	2023-05-01
发表期刊	ORGANIC GEOCHEMISTRY
ISSN	0146-6380
卷号	179 页码:9
通讯作者	Yuan, Huamao([email protected]) ; Song, Jinming([email protected])
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.
关键词	Particulate organic matter Bacterial reworking Amino sugars South Yellow Sea Marginal sea
DOI	10.1016/j.orggeochem.2023.104583
收录类别	SCI
语种	英语
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
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001049003400001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS关键词	ZOOPLANKTON FECAL PELLETS ; YELLOW SEA ; AMINO-SUGARS ; PHYTOPLANKTON COMMUNITY ; MARINE SNOW ; OCEAN ; PEPTIDOGLYCAN ; NUTRIENTS ; SINKING ; FLUXES
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182766
专题	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.Laoshan Lab, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 5.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China 6.Xiamen Univ, Coll Ocean & Earth Sci, Xiamen, Peoples R China 7.Chinese Acad Sci, Inst Oceanol, Publ Technol Serv Ctr, Qingdao, Peoples R China 8.GEOMAR Helmholtz Ctr Ocean Res Kiel, Marine Biogeochem Div, Kiel, Germany 9.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
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.