Decoupling of N and P aggravated upward along food chains in an urban river ecosystem
文献类型：期刊论文
| 作者 | An, Shenqun; Yan, Zhengbing5; Song, Ying3; Fu, Qiang3; Ge, Feiyang; Wu, Zehao; An, Wei1; Han, Wenxuan4 |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2023 |
| 卷号 | 313 |
| ISSN号 | 0045-6535 |
| 关键词 | Nitrogen and phosphorus stoichiometry Trophic level Nutrient decoupling Stoichiometric homeostasis Nutrient imbalance |
| DOI | 10.1016/j.chemosphere.2022.137555 |
| 文献子类 | Article |
| 英文摘要 | Anthropogenic input of nutrient has profoundly influenced water quality and aquatic organisms, however, large and unbalanced nitrogen (N) and phosphorus (P) inputs (decoupling) can lead to a range of ecological health problems such as eutrophication. Whether and how the decoupling varies along the aquatic food chain remains poorly addressed. Here we chose an urban river ecosystem in the cosmopolis region of Beijing, with reclaimed water as the entire replenishment water source over 20 years, to demonstrate the decoupling pattern of N vs P across trophic levels. Results showed that organism C, N and P concentration increased, but N:P ratio decreased upward along the food chains, suggesting that this decoupling of N and P increased as trophic level ascends. Compared with natural freshwater ecosystem, the decoupling of N and P was aggravated in the reclaimed water river. Moreover, the homeostasis of N and P were higher at higher relative to lower trophic levels, and higher in macro-food chain relative to planktonic food chain. This study, for the first time, revealed the increasing decoupling of N vs P upward along the major food chains in an urban aquatic ecosystem, and could improve the understanding of nutrient cycling at the food chain level under human disturbance, and provide useful information for ecological restoration and eutrophication control of urban wetlands replenished with reclaimed water. |
| 学科主题 | Environmental Sciences |
| 电子版国际标准刊号 | 1879-1298 |
| 出版地 | OXFORD |
| WOS关键词 | WASTE-WATER ; FRESH-WATER ; STOICHIOMETRIC HOMEOSTASIS ; PHOSPHORUS STOICHIOMETRY ; ECOLOGICAL STOICHIOMETRY ; COMMUNITY COMPOSITION ; NUTRIENT LIMITATION ; NITROGEN ; GROWTH ; PHYTOPLANKTON |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000904126400001 |
| 资助机构 | National Key Research and Development Program of China [2018YFC0507200] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/29133]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Beijing Drainage Grp Co Ltd, Beijing 100124, Peoples R China 2.China Agr Univ, Coll Resources & Environm Sci, 2 West Yuanmingyuan Rd, Beijing 100193, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 5.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China |
| 推荐引用方式 GB/T 7714 | An, Shenqun,Yan, Zhengbing,Song, Ying,et al. Decoupling of N and P aggravated upward along food chains in an urban river ecosystem[J]. CHEMOSPHERE,2023,313. |
| APA | An, Shenqun.,Yan, Zhengbing.,Song, Ying.,Fu, Qiang.,Ge, Feiyang.,...&Han, Wenxuan.(2023).Decoupling of N and P aggravated upward along food chains in an urban river ecosystem.CHEMOSPHERE,313. |
| MLA | An, Shenqun,et al."Decoupling of N and P aggravated upward along food chains in an urban river ecosystem".CHEMOSPHERE 313(2023). |
入库方式： OAI收割
来源：植物研究所
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