Significant microbial nitrogen loss from denitrification and anammox in the land-sea interface of low permeable sediments
文献类型：期刊论文
| 作者 | Wen, Xiaomei3; Hong, Yiguo3; Li, Yiben3; Jiao, Lijing2; Wu, Jiapeng2; He, Xiang3 |
| 刊名 | INTERNATIONAL BIODETERIORATION & BIODEGRADATION
 |
| 出版日期 | 2018 |
| 卷号 | 135页码:80 |
| 关键词 | Nitrogen attenuation Anammox Denitrification Land-sea interface Low permeable sediment |
| ISSN号 | 0964-8305 |
| DOI | 10.1016/j.ibiod.2018.10.002 |
| 英文摘要 | The 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. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17559]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Guangzhou Univ, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China 2.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanol, Guangzhou 510301, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, Xiaomei,Hong, Yiguo,Li, Yiben,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 | Wen, Xiaomei,Hong, Yiguo,Li, Yiben,Jiao, Lijing,Wu, Jiapeng,&He, Xiang.(2018).Significant microbial nitrogen loss from denitrification and anammox in the land-sea interface of low permeable sediments.INTERNATIONAL BIODETERIORATION & BIODEGRADATION,135,80. |
| MLA | Wen, Xiaomei,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. |
入库方式： OAI收割
来源：南海海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。