Nitrogen loss from the coastal shelf of the East China Sea: Implications of the organic matter br

doi:10.1016/j.scitotenv.2022.158805

	Nitrogen loss from the coastal shelf of the East China Sea: Implications of the organic matter br
	Lai, Xiaoshuang 1,2,3,4; Li, Xuegang 1,2,3,4,6; Song, Jinming1,2,3,4,6 ; Yuan, Huamao 1,2,3,4; Duan, Liqin 1,2,3,4; Li, Ning 1,2,3,4,5; Wang, Yingxia 1,2,3,4,5
	2023
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	854 页码:10
通讯作者	Li, Xuegang(lixuegang@qdio.ac.cn) ; Song, Jinming(jmsong@qdio.ac.cn)
摘要	Organic matter is a critical factor which regulates nitrogen loss pathways of denitrification and anammox for microbesin marine ecosystems. However, only a little attention has been paid to contrasting studies on denitrification andanammox in sandy and muddy sediments, especially in the coastal continental shelf dominated by sandy sediments.This study determined the bulk properties and associated microbial nitrogen transformation processes of surface sed-iments in the East China Sea coastal shelf, with the aim of gaining insight into the interaction of nitrogen loss with or-ganic matter at the molecular level. The results illustrate that nitrogen loss dominates in organic-rich muddysediments, and its denitrification rate (14.39 nmol N g-1h-1) and anammox rate (2.73 nmol N g-1h-1) are greaterthan those of sandy sediments (denitrification rate = 5.55 nmol N g-1h-1, anammox rate = 1.57 nmol N g-1h-1).Furthermore, determination of the mean summed ladderanes shows higher anammox generated in the muddy sedi-ments with a value of 167.78 ng g-1dw. Quantitative analysis demonstrated that organic-rich muddy sediments en-hanced the copy number of the denitrifying functional genenosZand anammox functional genehzsB. We inferredthat the greater rate of nitrogen loss in muddy sediments was due to the coupling relationship between anammoxand denitrification. Overall, the community distribution and abundance of denitrifying bacteria and anammox bacte-ria changed intricately under the influence of organic matter. Moreover, this study further improves the understanding of nitrogen loss pathways and mechanistic factors from sediments
关键词	Nitrogen loss Organic matter Denitrification Anammox Ladderanes Functional genes
DOI	10.1016/j.scitotenv.2022.158805
收录类别	SCI
语种	英语
资助项目	Marine S&T Fund of Shandong Province for the Pilot National Laboratory for Marine Science and Technology (Qingdao)[2022QNLM040003-1] ; National Natural Science Foundation of China[91958103] ; National Natural Science Foundation of China[42176200] ; National Natural Science Foundation of China[42130703] ; Chinese Academy of Sciences[XDA19060401] ; Natural Science Foundation of Shandong Province[ZR2020YQ28]
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000861205300002
出版者	ELSEVIER
引用统计	被引频次：4[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/337002/180609
专题	海洋生态与环境科学重点实验室
通讯作者	Li, Xuegang; Song, Jinming
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, 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.Chinese Acad Sci, Inst Oceanol, Publ Technol Serv Ctr, Qingdao, Peoples R China 6.Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, 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	Lai, Xiaoshuang,Li, Xuegang,Song, Jinming,et al. Nitrogen loss from the coastal shelf of the East China Sea: Implications of the organic matter br[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,854:10.
APA	Lai, Xiaoshuang.,Li, Xuegang.,Song, Jinming.,Yuan, Huamao.,Duan, Liqin.,...&Wang, Yingxia.(2023).Nitrogen loss from the coastal shelf of the East China Sea: Implications of the organic matter br.SCIENCE OF THE TOTAL ENVIRONMENT,854,10.
MLA	Lai, Xiaoshuang,et al."Nitrogen loss from the coastal shelf of the East China Sea: Implications of the organic matter br".SCIENCE OF THE TOTAL ENVIRONMENT 854(2023):10.

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