Dual stable isotopes approach reveals the nitrogen sources, transformations, and effects on phytoplankton community structure in a large floodplain lake
文献类型：期刊论文
| 作者 | Ha, Xianrui2,3; Lin, Shunhe1,3; Jia, Junjie2,3; Wang, Jing3; Wu, Fan3; Sun, Kun2; Lu, Yao2,3; Wang, Shuoyue2,3; Gao, Yang2,3 |
| 刊名 | ECOLOGICAL PROCESSES
 |
| 出版日期 | 2025-02-12 |
| 卷号 | 14期号:1页码:17 |
| 关键词 | Nitrogen cycling Phytoplankton assimilation Nitrification Phytoplankton biomass Lake Poyang |
| DOI | 10.1186/s13717-025-00579-z |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Background Anthropogenic activities have led to increased N input and changes of N transformation processes in lake systems. However, changes in phytoplankton community structure caused by phytoplankton's preference for N utilization under the increasing N input remain poorly understood. This study used nitrate isotopes (delta N-15-NO3- and delta O-18-NO3-) to investigate seasonal differences in N cycling as well as associated response of phytoplankton biomass and community composition. Results Results showed that the average delta N-15-NO3- values in spring, summer, autumn, and winter were 7.6 +/- 0.7 parts per thousand, 6.1 +/- 0.7 parts per thousand, 5.5 +/- 1.8 parts per thousand, and 7.4 +/- 1.2 parts per thousand, respectively. Accordingly, the average delta O-18-NO3- values showed the following order: winter (12.8 +/- 1.0 parts per thousand) > summer (11.5 +/- 0.9 parts per thousand) > spring (10.3 +/- 0.9 parts per thousand) > autumn (7.9 +/- 1.7 parts per thousand). The main nitrate sources in Lake Poyang were soil N, N fertilizer, and the manure and sewage in all seasons, contributing 93.8%, 3.3%, and 2.8%, respectively. Nitrification and algal-derived nitrate (NO3--N) assimilation were the main biochemical processes affecting N. In spring, the signal of nitrification was stronger, while in autumn, the signals of N assimilation by algae were more pronounced. The phytoplankton community composition varied with the seasonal changes of N concentrations and forms. The total biomass of phytoplankton in winter was the lowest of all four seasons and it was negatively correlated with NO3--N concentration (P < 0.05). Conclusions The results of this study contribute to a better understanding of the role of available forms of N in floodplain lake and provide essential support for prediction of phytoplankton growth and functions. Our work deciphers the role of phytoplankton in the lake N cycle, providing theoretical support to management of phytoplankton community to future environmental changes. |
| URL标识 | 查看原文 |
| WOS关键词 | POYANG LAKE ; FRESH-WATER ; GREEN-ALGAE ; NITRATE ; DENITRIFICATION ; ASSIMILATION ; SEDIMENTS ; SYSTEM ; GROWTH ; CYANOBACTERIA |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001419796400002 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/212326]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 通讯作者 | Wu, Fan |
| 作者单位 | 1.Fujian Matern & Child Hlth Hosp, Dept Obstet & Gynecol, Fuzhou 350102, Fujian, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Ha, Xianrui,Lin, Shunhe,Jia, Junjie,et al. Dual stable isotopes approach reveals the nitrogen sources, transformations, and effects on phytoplankton community structure in a large floodplain lake[J]. ECOLOGICAL PROCESSES,2025,14(1):17. |
| APA | Ha, Xianrui.,Lin, Shunhe.,Jia, Junjie.,Wang, Jing.,Wu, Fan.,...&Gao, Yang.(2025).Dual stable isotopes approach reveals the nitrogen sources, transformations, and effects on phytoplankton community structure in a large floodplain lake.ECOLOGICAL PROCESSES,14(1),17. |
| MLA | Ha, Xianrui,et al."Dual stable isotopes approach reveals the nitrogen sources, transformations, and effects on phytoplankton community structure in a large floodplain lake".ECOLOGICAL PROCESSES 14.1(2025):17. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。