气候变化领域集成服务门户(CCPortal): Climate and landform interact to control the source and transport of nitrate in Pacific Northwest rivers

CCPortal

DOI	10.1038/s43247-024-01235-8
	Climate and landform interact to control the source and transport of nitrate in Pacific Northwest rivers
	Elmstrom, Elizabeth J.; Holtgrieve, Gordon W.; Scheuerell, Mark D.; Schauer, Andrew J.; Leazer, Karrin
发表日期	2024
EISSN	2662-4435
起始页码	5
结束页码	1
卷号	5 期号:1
英文摘要	The hydrological effects of climate change are documented in many regions; however, climate-driven impacts to the source and transport of river nutrients remain poorly understood. Understanding the factors controlling nutrient dynamics across river systems is critical to preserve ecosystem function yet challenging given the complexity of landscape and climate interactions. Here, we harness a large regional dataset of nitrate (NO3-) yield, concentration, and isotopic composition (delta 15N and delta 18O) to evaluate the strength of hydroclimate and landscape variables in controlling the seasonal source and transport of NO3-. We show that hydroclimate strongly influenced the seasonality of river NO3-, producing distinct, source-dependent NO3- regimes across rivers from two mountain ranges. Riverine responses to hydroclimate were also constrained by watershed-scale topographic features, demonstrating that while regional climate strongly influences the timing of river NO3- transport, watershed topography plays a distinct role in mediating the sensitivity of river NO3- dynamics to future change. Precipitation and watershed topography interact to control nitrate export in Puget Sound rivers, and both need to be considered in nutrient management, according to a time series model that combines water quality samples and environmental variables.
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001169126200002
来源期刊	COMMUNICATIONS EARTH & ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293998
作者单位	University of Washington; University of Washington Seattle; United States Department of the Interior; United States Geological Survey; University of Washington; University of Washington Seattle; University of Washington; University of Washington Seattle; University of Washington; University of Washington Seattle; Western Washington University
推荐引用方式 GB/T 7714	Elmstrom, Elizabeth J.,Holtgrieve, Gordon W.,Scheuerell, Mark D.,et al. Climate and landform interact to control the source and transport of nitrate in Pacific Northwest rivers[J],2024,5(1).
APA	Elmstrom, Elizabeth J.,Holtgrieve, Gordon W.,Scheuerell, Mark D.,Schauer, Andrew J.,&Leazer, Karrin.(2024).Climate and landform interact to control the source and transport of nitrate in Pacific Northwest rivers.COMMUNICATIONS EARTH & ENVIRONMENT,5(1).
MLA	Elmstrom, Elizabeth J.,et al."Climate and landform interact to control the source and transport of nitrate in Pacific Northwest rivers".COMMUNICATIONS EARTH & ENVIRONMENT 5.1(2024).