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Evaluating the use of diurnal groundwater fluctuations for estimating evapotranspiration in wetland environments: case studies in southeast England and northeast Germany

Mould, D.J.; Frahm, E.; Salzmann, Th.; Miegel, K.; Acreman, M.C.. 2010 Evaluating the use of diurnal groundwater fluctuations for estimating evapotranspiration in wetland environments: case studies in southeast England and northeast Germany. Ecohydrology, 3. 294-305. 10.1002/eco.108

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Abstract/Summary

Wetlands are characterised by frequent saturated conditions, dense vegetation growth and thus high evapotranspiration (ET) rates. Understanding wetland processes and water re-source implications of wetland management and restoration requires estimates of evapotran-spiration rates. The analysis of diurnal groundwater fluctuations (DGF) for estimating ET has been established for nearly 80 years, yet the method is not yet well-utilised in practice due to inherent limitations. This paper assesses contemporary updates to the method to define a consistent tool and applies this to two contrasting riparian zones, in southeast England and northeast Germany. The method’s accuracy is compared to reference ET evaluation meth-ods and its utility for wetland hydrological management is assessed. Finally, practical guid-ance on how to apply the tool is provided.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1002/eco.108
Programmes: CEH Topics & Objectives 2009 onwards > Water > WA Topic 2 - Ecohydrological Processes
CEH Sections: Acreman
ISSN: 1936-0584
Additional Keywords: evapotranspiration, wetlands, phreatophytes, groundwater, specific yield
NORA Subject Terms: Ecology and Environment
Hydrology
Date made live: 21 Sep 2010 15:26
URI: http://nora.nerc.ac.uk/id/eprint/9006

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