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1. Suitability of precipitation waters as semi-artificial groundwater tracers

Author:
Simon, Elisabeth,   et al.   ; Binder, Martin; Burghardt, Diana; Engelmann, Christian; Tritschler, Felix; Prommer, Henning; Dietrich, Peter; Liedl, Rudolf; Händel, Falk;     Show all 9 Authors
Source:
Journal of hydrology 2019 pp. 123982
ISSN:
0022-1694
Subject:
electrical conductivity; groundwater; hydrogeochemistry; ion exchange; laboratory experimentation; migratory behavior; models; porous media; rain; sediments; snowmelt; stable isotopes; tracer techniques; uncertainty
Abstract:
... In this study the suitability of precipitation waters as semi-artificial and multi-component groundwater tracers is investigated and potential applications as well as limitations are discussed. Specifically, we analyzed their migration behavior during laboratory-scale experiments with groundwater-saturated porous media. Artificially 2H- and 18O-labelled water as well as natural precipitation water ...
DOI:
10.1016/j.jhydrol.2019.123982

2. Intercropping wheat and maize increases total radiation interception and wheat RUE but lowers maize RUE

Author:
Simon, Elisabeth,   et al.   ; Gou, Fang; van Ittersum, Martin K.; Leffelaar, Peter A.; van der Putten, Peter E.L.; Zhang, Lizhen; van der Werf, Wopke;     Show all 7 Authors
Source:
European journal of agronomy 2017 v.84 pp. 125-139
ISSN:
1161-0301
Subject:
aboveground biomass; corn; crops; field experimentation; intercropping; leaf area; models; photosynthetically active radiation; planting; plasticity; radiation use efficiency; regression analysis; wheat; Netherlands
Abstract:
... Row configuration has a large influence on the intensity of species interactions in intercrops. Row configuration affects how many crop rows interact with the same species and how many rows interact with the other species, shaping the expression of plasticity, resource capture, and growth. This study aims to determine how row configuration influences radiation interception and productivity in whea ...
DOI:
10.1016/j.eja.2016.10.014