SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)
Significant microbial nitrogen loss from denitrification and anammox in the land-sea interface of low permeable sediments
Jiao, Lijing1; Wu, Jiapeng1; He, Xiang2; Wen, Xiaomei2; Li, Yiben2; Hong, Yiguo2
2018
Source PublicationINTERNATIONAL BIODETERIORATION & BIODEGRADATION
ISSN0964-8305
Volume135Pages:80
AbstractThe land-sea interface is a unique site playing an important role in the biogeochemical processes of nutrients, but it is unclear whether it acts as a sink or source for coastal nitrogen loading. In this study, we analyzed the potential activity, microbial abundance, diversity as well as distribution pattern of both denitrification and anammox processes at a land-sea interface of Renshan in order to decipher the microbial nitrogen loss in intertidal low permeable sediments (LPS). Stable isotopic nitrogen tracer assay showed that potential rates of denitrification, which ranged from 0.61 to 13.47 mu mol N kg(-1)h(-1) sediments, were much stronger than that of anammox. Meanwhile, the abundance of denitrifiers was observed obviously higher than that of anammox bacteria by 1-2 order of magnitudes in the LPS. Based on the high-throughput sequencing analysis, high diversity was found for denitrifiers with gamma-proteobacteria, alpha-proteobacteria and beta-proteobacteria as the major members of the microbial community in the region. Anammox bacteria, including Ca. Scalindua, Ca. Kuenenia and Ca. Brocadia, were observed in the same transect. Geochemical and hydrological analyses indicated that hydrological processes, weak ammonium-borne freshwater advection, upper nitrate-borne brackish water diffusion and oxygenated seawater intrusion, may be important factors affecting the microbial nitrogen removal. Collectively, our results suggest that the land-sea interface with low permeable sediment is a microbial active zone with denitrification as the dominant contributor to the total nitrogen loss, resulting in the attenuation of reactive nitrogen from groundwater to the ocean in this region.
DepartmentLTO
KeywordNitrogen attenuation Anammox Denitrification Land-sea interface Low permeable sediment
DOI10.1016/j.ibiod.2018.10.002
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17559
Collection热带海洋环境国家重点实验室(LTO)
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanol, Guangzhou 510301, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Guangzhou Univ, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Jiao, Lijing,Wu, Jiapeng,He, Xiang,et al. Significant microbial nitrogen loss from denitrification and anammox in the land-sea interface of low permeable sediments[J]. INTERNATIONAL BIODETERIORATION & BIODEGRADATION,2018,135:80, 89.
APA Jiao, Lijing,Wu, Jiapeng,He, Xiang,Wen, Xiaomei,Li, Yiben,&Hong, Yiguo.(2018).Significant microbial nitrogen loss from denitrification and anammox in the land-sea interface of low permeable sediments.INTERNATIONAL BIODETERIORATION & BIODEGRADATION,135,80.
MLA Jiao, Lijing,et al."Significant microbial nitrogen loss from denitrification and anammox in the land-sea interface of low permeable sediments".INTERNATIONAL BIODETERIORATION & BIODEGRADATION 135(2018):80.
Files in This Item:
File Name/Size DocType Version Access License
Significant microbia(3107KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.