气候变化领域集成服务门户(CCPortal): Global Dam-Driven Changes to Riverine N:P:Si Ratios Delivered to the Coastal Ocean

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DOI	10.1029/2020GL088288
	Global Dam-Driven Changes to Riverine N:P:Si Ratios Delivered to the Coastal Ocean
	Maavara T.; Akbarzadeh Z.; Van Cappellen P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	River damming alters nutrient fluxes along the land-ocean aquatic continuum as a result of biogeochemical processes in reservoirs. Both the changes in riverine nutrient fluxes and nutrient ratios impact ecosystem functioning of receiving water bodies. We utilize spatially distributed mechanistic models of nitrogen (N), phosphorus (P), and silicon (Si) cycling in reservoirs to quantify changes in nutrient stoichiometry of river discharge to coastal waters. The results demonstrate that the growing number of dams decouples the riverine fluxes of N, P, and Si. Worldwide, preferential removal of P over N in reservoirs increases N:P ratios delivered to the ocean, raising the potential for P limitation of coastal productivity. By midcentury, more than half of the rivers discharging to the coastal zone will experience a higher removal of reactive Si relative to reactive P and total N, in response to the rapid pace at which new hydroelectric dams are being built. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Discharge (fluid mechanics); Nutrients; Reservoirs (water); Rivers; Silicon; Biogeochemical process; Coastal waters; Ecosystem functioning; Hydroelectric dams; Mechanistic models; Nutrient fluxes; Receiving water bodies; River discharge; Hydroelectric power plants; biogeochemical cycle; coastal water; coastal zone; land-sea interaction; river discharge
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169975
作者单位	School of the Environment, Yale University, New Haven, CT, United States; Ecohydrology Research Group, Water Institute, and Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, ON, Canada
推荐引用方式 GB/T 7714	Maavara T.,Akbarzadeh Z.,Van Cappellen P.. Global Dam-Driven Changes to Riverine N:P:Si Ratios Delivered to the Coastal Ocean[J],2020,47(15).
APA	Maavara T.,Akbarzadeh Z.,&Van Cappellen P..(2020).Global Dam-Driven Changes to Riverine N:P:Si Ratios Delivered to the Coastal Ocean.Geophysical Research Letters,47(15).
MLA	Maavara T.,et al."Global Dam-Driven Changes to Riverine N:P:Si Ratios Delivered to the Coastal Ocean".Geophysical Research Letters 47.15(2020).