Response of denitrification rate and denitrifiers to human-disturbance intensity and physicochemical factors of overlying water in a subtropical stream, China
文献类型：期刊论文
| 作者 | Zhao, Binjie2,3; Chen, Qiuyang4; Li, Siyue1 ; Tan, Xiang2,5; Zhang, Quanfa2,5
|
| 刊名 | FRESHWATER SCIENCE
 |
| 出版日期 | 2021-09-01 |
| 页码 | 17 |
| ISSN号 | 2161-9549 |
| 关键词 | river sediment human-disturbance intensity environmental factors denitrification rate denitrification gene denitrifier |
| DOI | 10.1086/715787 |
| 通讯作者 | Zhang, Quanfa(qzhang@wbgcas.cn) |
| 英文摘要 | Human activities have greatly increased the availability of bioactive nitrogen and, consequently, have altered the nitrogen cycle in riverine systems. Here, we studied denitrification rates and denitrifiers in river sediment and their relationships with aquatic physicochemical variables along a gradient of human-disturbance intensity in a subtropical stream in China. We used high-throughput sequencing to characterize denitrifying assemblages (denitrification genes narG, nirK, nirS and nosZ as functional markers). We found that denitrification rates were positively correlated with water temperature, and the primary factors affecting denitrifier assemblage species richness were water temperature and NO3-. Denitrification rate was negatively associated with narG and nirS gene-coding denitrifier species richness and associated (both positively and negatively) with the relative abundances of many of the dominant denitrifiers with narG and nirS genes. The potential active denitrifiers with narG and nirS genes predominantly occurred in the most intensely disturbed area within the catchment (which also recorded the highest temperatures), but denitrification rates in the intensely and slightly disturbed areas were similar. Our research found relationships between denitrifier assemblage alpha diversity and relative abundances of dominant species, environmental factors, and denitrification rates. In this study, we did not find human-disturbance intensity to be a direct influence on denitrification, likely because denitrification is a complex process influenced by both the environment and the microbial assemblage. |
| 资助项目 | National Natural Science Foundation of China[32030069] ; National Natural Science Foundation of China[31720103905] ; National Natural Science Foundation of China[31570463] |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 语种 | 英语 |
| 出版者 | UNIV CHICAGO PRESS |
| WOS记录号 | WOS:000680098800001 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/13882]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Zhang, Quanfa |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Res Ctr Ecohydrol, 266 Fangzheng Ave,Shuitu Hitech Ind Pk, Chongqing 400714, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, 201 Jiufeng Ist Rd, Wuhan 430074, Peoples R China 3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China 4.Univ Edinburgh, Inst Geog, Sch Geosci, 1 Drummond St, Edinburgh EH8 9XP, Midlothian, Scotland 5.Chinese Acad Sci, Core Bot Gardens, Ctr Plant Ecol, 201 Jiufeng 1st Rd, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Binjie,Chen, Qiuyang,Li, Siyue,et al. Response of denitrification rate and denitrifiers to human-disturbance intensity and physicochemical factors of overlying water in a subtropical stream, China[J]. FRESHWATER SCIENCE,2021:17. |
| APA | Zhao, Binjie,Chen, Qiuyang,Li, Siyue,Tan, Xiang,&Zhang, Quanfa.(2021).Response of denitrification rate and denitrifiers to human-disturbance intensity and physicochemical factors of overlying water in a subtropical stream, China.FRESHWATER SCIENCE,17. |
| MLA | Zhao, Binjie,et al."Response of denitrification rate and denitrifiers to human-disturbance intensity and physicochemical factors of overlying water in a subtropical stream, China".FRESHWATER SCIENCE (2021):17. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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