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

文献类型：期刊论文

作者Lai, Xiaoshuang1,2,3,4; Li, Xuegang1,2,3,4,6; Song, Jinming1,2,3,4,6; Yuan, Huamao1,2,3,4; Duan, Liqin1,2,3,4; Li, Ning1,2,3,4,5; Wang, Yingxia1,2,3,4,5
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2023
卷号854页码:10
ISSN号0048-9697
关键词Nitrogen loss Organic matter Denitrification Anammox Ladderanes Functional genes
DOI10.1016/j.scitotenv.2022.158805
通讯作者Li, Xuegang(lixuegang@qdio.ac.cn) ; Song, Jinming(jmsong@qdio.ac.cn)
英文摘要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
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
语种英语
出版者ELSEVIER
WOS记录号WOS:000861205300002
源URL[http://ir.qdio.ac.cn/handle/337002/180608]  
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
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.

入库方式： OAI收割

来源：海洋研究所

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