气候变化领域集成服务门户(CCPortal): Unexpected spatial stability of water chemistry in headwater stream networks

CCPortal

DOI	10.1111/ele.12897
	Unexpected spatial stability of water chemistry in headwater stream networks
	Abbott B.W.; Gruau G.; Zarnetske J.P.; Moatar F.; Barbe L.; Thomas Z.; Fovet O.; Kolbe T.; Gu S.; Pierson-Wickmann A.-C.; Davy P.; Pinay G.
发表日期	2019
ISSN	1461023X
卷号	21 期号:2
英文摘要	Understanding how water and solutes enter and propagate through freshwater landscapes in the Anthropocene is critical to protecting and restoring aquatic ecosystems and ensuring human water security. However, high hydrochemical variability in headwater streams, where most carbon and nutrients enter river networks, has hindered effective modelling and management. We developed an analytical framework informed by landscape ecology and catchment hydrology to quantify spatiotemporal variability across scales, which we tested in 56 headwater catchments, sampled periodically over 12 years in western France. Unexpectedly, temporal variability in dissolved carbon, nutrients and major ions was preserved moving downstream and spatial patterns of water chemistry were stable on annual to decadal timescales, partly because of synchronous variation in solute concentrations. These findings suggest that while concentration and flux cannot be extrapolated among subcatchments, periodic sampling of headwaters provides valuable information about solute sources and subcatchment resilience to disturbance. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	Critical source area; dissolved organic carbon; hydrologically sensitive area; network analysis; nutrients; representative elementary area; stream network; subcatchment leverage; subcatchment synchrony; synoptic sampling
语种	英语
scopus关键词	water; ecosystem; France; river; water flow; Ecosystem; France; Rivers; Water; Water Movements
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121162
作者单位	Department of Plant and Wildlife Sciences, Brigham Young University, Provo, UT, United States; Department of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, United States; ECOBIO, OSUR, CNRS, Université de Rennes 1, Rennes, 35045, France; OSUR, CNRS, UMR 6118, Géosciences Rennes, Université de Rennes 1, Rennes, 35045, France; University François-Rabelais Tours, EA 6293 Géo-Hydrosystèmes Continentaux, Parc de Grandmont, Tours, 37200, France; UMR SAS, AGROCAMPUS OUEST, INRA, Rennes, 35000, France; MALY, RIVERLY irstea, Lyon-Villeurbanne, France
推荐引用方式 GB/T 7714	Abbott B.W.,Gruau G.,Zarnetske J.P.,et al. Unexpected spatial stability of water chemistry in headwater stream networks[J],2019,21(2).
APA	Abbott B.W..,Gruau G..,Zarnetske J.P..,Moatar F..,Barbe L..,...&Pinay G..(2019).Unexpected spatial stability of water chemistry in headwater stream networks.Ecology Letters,21(2).
MLA	Abbott B.W.,et al."Unexpected spatial stability of water chemistry in headwater stream networks".Ecology Letters 21.2(2019).