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Dive into the research topics where Stefanie Kloss is active.

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Featured researches published by Stefanie Kloss.


Science of The Total Environment | 2014

Trace element concentrations in leachates and mustard plant tissue (Sinapis alba L.) after biochar application to temperate soils

Stefanie Kloss; Franz Zehetner; Eva Oburger; Jannis Buecker; Barbara Kitzler; Walter W. Wenzel; Bernhard Wimmer; Gerhard Soja

Biochar application to agricultural soils has been increasingly promoted worldwide. However, this may be accompanied by unexpected side effects in terms of trace element (TE) behavior. We used a greenhouse pot experiment to study the influence of woodchip-derived biochar (wcBC) on leaching and plant concentration of various TEs (Al, Cd, Cu, Pb, Mn, As, B, Mo, Se). Three different agricultural soils from Austria (Planosol, Cambisol, Chernozem) were treated with wcBC at application rates of 1 and 3% (w/w) and subsequently planted with mustard (Sinapis alba L.). Soil samples were taken 0 and 7 months after the start of the pot experiment, and leachate water was collected twice (days 0 and 54). The extractability (with NH4NO3) of cationic TEs was decreased in the (acidic) Planosol and Cambisol after wcBC application, whereas in the (neutral) Chernozem it hardly changed. In contrast, anionic TEs were mobilized in all three soils, which resulted in higher anion concentrations in the leachates. The application of wcBC had no effect on Al and Pb in the mustard plants, but increased their B and Mo concentrations and decreased their Cd, Cu and Mn concentrations. A two-way analysis of variance showed significant interactions between wcBC application rate and soil type for most TEs, which indicates that different soil types may react differently upon wcBC application. Correlation and partial correlation analyses revealed that TE behavior was primarily related to soil pH, whereas the involvement of other factors such as electrical conductivity (EC), organic carbon (OC) content and dissolved organic carbon (DOC) was found to be more soil and TE-specific. The application of wcBC may be a useful strategy for the remediation of soils with elevated levels of cationic TEs, but could lead to deficiencies of cationic micronutrients and enhance short-term translocation of anionic TEs towards the groundwater at high leaching rates.


International Agrophysics | 2017

Calibration of ultrasonic power output in water, ethanol and sodium polytungstate

Axel Mentler; Jasmin Schomakers; Stefanie Kloss; Sophie Zechmeister-Boltenstern; R. Schuller; H. Mayer

Abstract Ultrasonic power is the main variable that forms the basis for many soil disaggregation experiments. Thus, a procedure for the rapid determination of this variable has been developed and is described in this article. Calorimetric experiments serve to measure specific heat capacity and ultrasonic power. Ultrasonic power is determined experimentally for deionised water, 30% ethanol and sodium polytungstate with a density of 1.6 g cm−3 and 1.8 g cm−3. All experiments are performed with a pre-selected ultrasonic probe vibration amplitude. Under these conditions, it was found that the emitted ultrasonic power was comparable in the four fluids. It is suggested, however, to perform calibration experiments prior to dispersion experiments, since the used fluid, as well as the employed ultrasonic equipment, may influence the power output.


Journal of Environmental Quality | 2012

Characterization of slow pyrolysis biochars: effects of feedstocks and pyrolysis temperature on biochar properties.

Stefanie Kloss; Franz Zehetner; Alex Dellantonio; R. Hamid; Franz Ottner; Volker Liedtke; Manfred Schwanninger; Martin H. Gerzabek; Gerhard Soja


European Journal of Soil Science | 2014

Soil microbial communities responded to biochar application in temperate soils and slowly metabolized 13C‐labelled biochar as revealed by 13C PLFA analyses: results from a short‐term incubation and pot experiment

Andrea Watzinger; S. Feichtmair; Barbara Kitzler; Franz Zehetner; Stefanie Kloss; Bernhard Wimmer; Sophie Zechmeister-Boltenstern; Gerhard Soja


Journal of Plant Nutrition and Soil Science | 2014

Biochar application to temperate soils: Effects on soil fertility and crop growth under greenhouse conditions

Stefanie Kloss; Franz Zehetner; Bernhard Wimmer; Jannis Buecker; Franziska Rempt; Gerhard Soja


Agricultural and Food Science | 2013

Biochar application to temperate soils: effects on nutrient uptake and crop yield under field conditions

Jasmin Karer; Bernhard Wimmer; Franz Zehetner; Stefanie Kloss; Gerhard Soja


Carbon | 2017

Changes in biochar physical and chemical properties: Accelerated biochar aging in an acidic soil

Maria V. Rechberger; Stefanie Kloss; Harald Rennhofer; Johannes Tintner; Andrea Watzinger; Gerhard Soja; Helga C. Lichtenegger; Franz Zehetner


Environmental Science and Pollution Research | 2015

Trace element biogeochemistry in the soil-water-plant system of a temperate agricultural soil amended with different biochars

Stefanie Kloss; Franz Zehetner; Jannis Buecker; Eva Oburger; Walter W. Wenzel; Akio Enders; Johannes Lehmann; Gerhard Soja


Water Air and Soil Pollution | 2016

Leachate Composition of Temperate Agricultural Soils in Response to Biochar Application

Jannis Buecker; Stefanie Kloss; Bernhard Wimmer; Franziska Rempt; Franz Zehetner; Gerhard Soja


Chemosphere | 2018

Enhanced Cu and Cd sorption after soil aging of woodchip-derived biochar: What were the driving factors?

Maria V. Rechberger; Stefanie Kloss; Shan-Li Wang; Johannes Lehmann; Harald Rennhofer; Franz Ottner; Karin Wriessnig; Gabrielle Daudin; Helga C. Lichtenegger; Gerhard Soja; Franz Zehetner

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Gerhard Soja

Austrian Institute of Technology

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Bernhard Wimmer

Austrian Institute of Technology

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Jannis Buecker

Austrian Institute of Technology

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Andrea Watzinger

Austrian Institute of Technology

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Franziska Rempt

Austrian Institute of Technology

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Barbara Kitzler

Forest Research Institute

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Helga C. Lichtenegger

Vienna University of Technology

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Jasmin Karer

Austrian Institute of Technology

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