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Using multi-tracer inference to move beyond single-catchment ecohydrology
Univ Rennes 1, OSUR, CNRS, ECOBIO,UMR 6553, Rennes, France.
Leibniz Inst Freshwater Ecol & Inland Fisheries, Berlin, Germany.
Ctr LyonVilleurbanne, UR MALY, Irstea, F-69616 Villeurbanne, France.
Naturalea, Barcelona, Spain.
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2016 (English)In: Earth-Science Reviews, ISSN 0012-8252, E-ISSN 1872-6828, Vol. 160, 19-42 p.Article in journal (Refereed) Published
Abstract [en]

Protecting or restoring aquatic ecosystems in the face of growing anthropogenic pressures requires an understanding of hydrological and biogeochemical functioning across multiple spatial and temporal scales. Recent technological and methodological advances have vastly increased the number and diversity of hydrological, biogeochemical, and ecological tracers available, providing potentially powerful tools to improve understanding of fundamental problems in ecohydrology, notably: 1. Identifying spatially explicit flowpaths, 2. Quantifying water residence time, and 3. Quantifying and localizing biogeochemical transformation. In this review, we synthesize the history of hydrological and biogeochemical theory, summarize modem tracer methods, and discuss how improved understanding of flowpath, residence time, and biogeochemical transformation can help ecohydrology move beyond description of site-specific heterogeneity. We focus on using multiple tracers with contrasting characteristics (crossing proxies) to infer ecosystem functioning across multiple scales. Specifically, we present how crossed proxies could test recent ecohydrological theory, combining the concepts of hotspots and hot moments with the Damkohler number in what we call the HotDam framework.

Place, publisher, year, edition, pages
2016. Vol. 160, 19-42 p.
Keyword [en]
Hydrological tracer; Water; Environmental hydrology; Flowpath; Residence time; Exposure time; Reactive transport; GW-SW interactions; Hot spots; Hot moments; Damkohler; Peclet; HotDam; Ecohydrology; Crossed proxies; Tracer; Groundwater; Surface water; Aquatic ecology
National Category
Environmental Sciences
URN: urn:nbn:se:uu:diva-297815DOI: 10.1016/j.earscirev.2016.06.014ISI: 000383295900002OAI: diva2:943529
EU, European Research Council, 607150
Available from: 2016-06-28 Created: 2016-06-28 Last updated: 2016-10-26Bibliographically approved

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