Has Submerged Vegetation Loss Altered Sediment Denitrification, N2O Production, and Denitrifying Microbial Communities in Subtropical Lakes?
文献类型：期刊论文
| 作者 | Liu, Guihua2; Li, Feng1,2; Zhang, Quanfa2; Jiang, Xiaoliang2; Liu, Wenzhi2 |
| 刊名 | GLOBAL BIOGEOCHEMICAL CYCLES
 |
| 出版日期 | 2018-08-01 |
| 卷号 | 32期号:8页码:1195-1207 |
| 关键词 | aquatic vegetation denitrification eutrophication functional genes shallow lakes |
| ISSN号 | 0886-6236 |
| DOI | 10.1029/2018GB005978 |
| 英文摘要 | Loss of submerged vegetation has become one of the most serious ecological issues in shallow lakes worldwide. However, there is limited understanding of the effect of vegetation loss on sediment nitrogen (N) cycling processes and microbial communities, which are closely linked to the N removal function of aquatic ecosystems. Here we investigated the sediment denitrification and N2O production rates of 10 macrophyte-rich and 12 macrophyte-free lakes in subtropical China. We determined the abundance of diversity of nirS- and nirK-encoding denitrifiers in sediments using quantitative polymerase chain reaction and clone libraries. The results showed that denitrification and N2O production rates in vegetated lakes were slightly but not significantly lower than those in nonvegetated lakes. Sediment denitrification rates in vegetated lakes were positively correlated with water NO3- concentration but not significantly related to submerged vegetation and denitrifier communities. Similarly, the presence of submerged macrophytes had no significant effect on denitrifier diversity and abundance. Water N content and sediment moisture were the main factors affecting the composition of denitrifying communities. Moreover, no significant correlation was found between community similarity and geographical distance among lakes. Overall, our findings suggest that submerged vegetation degradation in Yangtze lakes has no significant effect on sediment denitrification rates and denitrifying community structure. Abiotic factors, especially water N level and sediment moisture, play a critical role in controlling N removal capacity of lake sediments. |
| 资助项目 | National Natural Science Foundation of China[31720103905] ; National Natural Science Foundation of China[31570535] ; National Science and Technology Basic Special Project of China[2014FY210700] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2017388] |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000443940300004 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/5706]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Liu, Guihua; Li, Feng |
| 作者单位 | 1.Chinese Acad Sci, Inst Subtrop Agr, Dongting Lake Stn Wetland Ecosyst Res, Changsha, Hunan, Peoples R China 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Guihua,Li, Feng,Zhang, Quanfa,et al. Has Submerged Vegetation Loss Altered Sediment Denitrification, N2O Production, and Denitrifying Microbial Communities in Subtropical Lakes?[J]. GLOBAL BIOGEOCHEMICAL CYCLES,2018,32(8):1195-1207. |
| APA | Liu, Guihua,Li, Feng,Zhang, Quanfa,Jiang, Xiaoliang,&Liu, Wenzhi.(2018).Has Submerged Vegetation Loss Altered Sediment Denitrification, N2O Production, and Denitrifying Microbial Communities in Subtropical Lakes?.GLOBAL BIOGEOCHEMICAL CYCLES,32(8),1195-1207. |
| MLA | Liu, Guihua,et al."Has Submerged Vegetation Loss Altered Sediment Denitrification, N2O Production, and Denitrifying Microbial Communities in Subtropical Lakes?".GLOBAL BIOGEOCHEMICAL CYCLES 32.8(2018):1195-1207. |
入库方式： OAI收割
来源：武汉植物园
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