Food chain; Metal budgets; Sustainable land use; Fertilizer-derived metal inputs; Soil contamination; Trace metals; Stable metal isotope ratios
Wiggenhauser Matthias, Bigalke Moritz, Imseng Martin, Keller Armin, Rehkämper Mark, Wilcke Wolfgang, Frossard Emmanuel (2019), Using isotopes to trace freshly applied cadmium through mineral phosphorus fertilization in soil-fertilizer-plant systems, in Science of The Total Environment
, 648, 779-786.
Wiggenhauser Matthias, Bigalke Moritz, Imseng Martin, Müller Michael, Keller Armin, Murphy Katy, Kreissig Katharine, Rehkämper Mark, Wilcke Wolfgang, Frossard Emmanuel (2018), Cadmium isotope fractionation in soil-wheat systems, in Environmental Science & Techology
Wiggenhauser Matthias, Bigalke Moritz, Imseng Martin, Keller Armin, Archer Corey, Wilcke Wolfgang, Frossard Emmanuel (2018), Zinc isotope fractionation during grain filling of wheat and a comparison of Zn and Cd isotope ratios in identical soil-plant systems, in New Phytologist
, XX(XX), XX-XX.
Imseng Martin Ernst, Wiggenhauser Matthias, Keller Armin, Müller Michael, Rehkämper Mark, Murphy Katy, Kreissig Katharina, Frossard Emmanuel, Wilcke Wolfgang, Bigalke Moritz (2018), Fate of Cd in Agricultural Soils: A Stable Isotope Approach to Anthropogenic Impact, Soil Formation, and Soil-Plant Cycling, in Environmental Science & Technology
, (4), 1919-1928.
Sustainable food production is a main prerequisite to guarantee sufficient and high quality nutrition over long time scales. This depends to a high degree on preserving balanced input and output patterns of nutrients and minimize soil contamination with pollutants like trace metals. Several Swiss and European studies have shown that current trace metal inputs to agricultural systems are clearly too high, resulting in trace metal accumulation in soils and possibly harmful effects on human health and on ecosystem functions in the long run. The reduction of metal loads requires knowledge of all input and output paths which is up to now incomplete. We therefore propose to use the novel metal stable isotope approach for three potentially toxic trace metals (Cu, Cd and Zn) combined with flux budgeting and modeling to identify and quantify metal sources to Swiss agricultural soils. Furthermore, we will also study plant uptake and transfer mechanisms with the help of stable metal isotopes. This approach allows estimating metal accumulation in human food parts of the crops at increasing soil metal accumulation by understanding plant uptake mechanisms. Our study will make use of the sites, archived samples, and a huge database on management practices of the Swiss National Soil Observation (NABO). The results will be used to develop and comunicate management advices to farmers and authorities to improve sustainability of agricultural production and minimize risks to the health of future generations caused by consumption of food enriched in metals.