globalchange  > 气候减缓与适应
DOI: 10.1111/ele.12897
Scopus记录号: 2-s2.0-85039173599
论文题名:
Unexpected spatial stability of water chemistry in headwater stream networks
作者: 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.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2018
卷: 21, 期:2
起始页码: 296
结束页码: 308
语种: 英语
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
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
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107509
Appears in Collections:气候减缓与适应

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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, France; OSUR, CNRS, UMR 6118, Géosciences Rennes, Université de Rennes 1, Rennes, France; University François-Rabelais Tours, EA 6293 Géo-Hydrosystèmes Continentaux, Parc de Grandmont, Tours, France; UMR SAS, AGROCAMPUS OUEST, INRA, Rennes, France; MALY, RIVERLY irstea, Lyon-Villeurbanne, France

Recommended Citation:
Abbott B.W.,Gruau G.,Zarnetske J.P.,et al. Unexpected spatial stability of water chemistry in headwater stream networks[J]. Ecology Letters,2018-01-01,21(2)
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