FG Bodenkunde

13 Items

Recent Submissions
The fate of silver nanoparticles in riverbank filtration systems — The role of biological components and flow velocity

Degenkolb, Laura ; Leuther, Frederic ; Lüderwald, Simon ; Philippe, Allan ; Metreveli, George ; Amininejad, Sayed ; Vogel, Hans-Jörg ; Kaupenjohann, Martin ; Klitzke, Sondra (2019-09-10)

Riverbank filtration is a natural process that may ensure the cleaning of surface water for producing drinking water. For silver nanoparticles (AgNP), physico-chemical interaction with sediment surfaces is one major retention mechanism. However, the effect of flow velocity and the importance of biological retention, such as AgNP attachment to biomass, are not well understood, yet. We investiga...

Retention and remobilization mechanisms of environmentally aged silver nanoparticles in an artificial riverbank filtration system

Degenkolb, Laura ; Metreveli, George ; Philippe, Allan ; Brandt, Anja ; Leopold, Kerstin ; Zehlike, Lisa ; Vogel, Hans-Jörg ; Schaumann, Gabriele E. ; Baumann, Thomas ; Kaupenjohann, Martin ; Lang, Friederike ; Kumahor, Samuel ; Klitzke, Sondra (2018-07-17)

Riverbank filtration systems are important structures that ensure the cleaning of infiltrating surface water for drinking water production. In our study, we investigated the potential risk for a breakthrough of environmentally aged silver nanoparticles (Ag NP) through these systems. Additionally, we identified factors leading to the remobilization of Ag NP accumulated in surficial sediment laye...

Transport and retention of differently coated CeO2 nanoparticles in saturated sediment columns under laboratory and near-natural conditions

Degenkolb, Laura ; Dippon, Urs ; Pabst, Silke ; Klitzke, Sondra (2019-04-08)

Where surface-functionalized engineered nanoparticles (NP) occur in drinking water catchments, understanding their transport within and between environmental compartments such as surface water and groundwater is crucial for risk assessment of drinking water resources. The transport of NP is mainly controlled by (i) their surface properties, (ii) water chemistry, and (iii) surface properties of ...

Nitrogen mineralization in soils of tropical climates - concepts, experiments and implications for modelers

Melzer, Dennis (2021)

The microbial release of nitrogen (N) from soil organic matter (SOM) is the underlying process for plant growth in many terrestrial soils. The prediction of the N background supply also determines the quality of agricultural simulation models. Nevertheless, the progress in the theoretical understanding of SOM are only gradually translated into new modeling approaches. For example, N release dyn...

Mobility and transport mechanisms of engineered nanoparticles in soils and water-saturated sediments

Degenkolb, Laura (2021)

Due to their promising and unique properties, nanoparticles (NP) are increasingly being used in industry and in everyday products. Their special properties are based on their size of less than 100 nm and the associated large surface area and high reactivity. If released into the environment during production or use, they may pose a risk to ecosystems and living organisms. For this reason, their...

Particles under stress: ultrasonication causes size and recovery rate artifacts with soil-derived POM but not with microplastics

Büks, Frederick ; Kayser, Gilles ; Zieger, Antonia ; Lang, Friederike ; Kaupenjohann, Martin (2021-01-11)

The breakdown of soil aggregates and the extraction of particulate organic matter (POM) by ultrasonication and density fractionation is a method widely used in soil organic matter (SOM) analyses. It has recently also been used for the extraction of microplastic from soil samples. However, the investigation of POM physiochemical properties and ecological functions might be biased if particles ar...

Correlations of Soil Fungi, Soil Structure and Tree Vigour on an Apple Orchard with Replant Soil

Cavael, Ulrike ; Tost, Philipp ; Diehl, Katharina ; Büks, Frederick ; Lentzsch, Peter (2020-12-03)

The soil-borne apple replant disease (ARD) is caused by biotic agents and affected by abiotic properties. There is evidence for the interrelation of the soil fungal population and soil aggregate structure. The aim of this study conducted between March and October 2020 on an orchard in north-east Germany was to detect the correlations of soil fungal density, soil structure and tree vigour under ...

Global concentrations of microplastics in soils – a review

Büks, Frederick ; Kaupenjohann, Martin (2020-12-17)

Worldwide, microplastics (MPs) have been commonly recognized as a threat to soil ecosystems. Terrestrial soils are widely contaminated by MPs due to the application of sewage sludge and wastewater, plastic mulching, littering, the input of tire wear from roads and atmospheric deposition. Within the last decade, an increasing number of individual studies focused on item counts and masses of MPs ...

Contrasting effects of biochar on N2O emission and N uptake at different N fertilizer levels on a temperate sandy loam

Sun, Zhencai ; Sänger, Anja ; Rebensburg, Philip ; Lentzsch, Peter ; Wirth, Stephan ; Kaupenjohann, Martin ; Meyer-Aurich, Andreas (2017)

Biochar has been frequently suggested as an amendment to improve soil quality and mitigate climate change. To investigate the optimal management of nitrogen (N) fertilization, we examined the combined effect of biochar and N fertilizer on plant N uptake and N2O emissions in a cereal rotation system in a randomized two-factorial field experiment on a sandy loam soil in Brandenburg, Germany. The ...

Data to Articel: Dissolved organic matter characteristics of deciduous and coniferous forests with variable management: different at the source, aligned in the soil

Thieme, Lisa ; Graeber, Daniel ; Hofmann, Diana ; Bischoff, Sebastian ; Schwarz, Martin T. ; Steffen, Bernhard ; Meyer, Ulf-Niklas ; Kaupenjohann, Martin ; Wilke, Wolfgang ; Michalzik, Beate ; Siemens, Jan (2019-03-21)

This dataset contains the data to the article: "Dissolved organic matter characteristics of deciduous and coniferous forests with variable management: different at the source, aligned in the soil" published in Biogeosciences

Purpose-designed technogenic materials for sustainable urban greening

Flores Ramírez, Eleonora (2018)

Background: Urban green areas provide a number of desirable ecosystem services for the environment and city dwellers. However, the substrate preparation for the greenery installation mostly implies the mining and erosion of valuable natural soils. Therefore, the objective of this work is to design a Technosol based on a mixture of mainly recycled materials, to sustain vegetation and to lower t...

Physical influence of microbial communities on the structure and occlusion of particulate organic matter in a sandy agricultural soil

Büks, Frederick (2018)

Soil aggregate stability is an integral marker of soil fertility. Well aggregated soil contributes to high rootability, a proper water and aeration regime, resistance against compaction and erosion as well as storage capability of organic carbon. The aggregation of soil primary particles and microaggregates is promoted not only by a large variety of physico-chemical but also biological interact...

Massive carbon addition to an organic-rich Andosol increased the subsoil but not the topsoil carbon stock

Zieger, Antonia ; Klaus, Kaiser ; Ríos Guayasamín, Pedro ; Kaupenjohann, Martin (2018-05-07)

Andosols are among the most carbon-rich soils, with an average of 254 Mg ha−1 organic carbon (OC) in the upper 100 cm. A current theory proposes an upper limit for OC stocks independent of increasing carbon input, because of finite binding capacities of the soil mineral phase. We tested the possible limits in OC stocks for Andosols with already large OC concentrations and stocks (212 g kg−1 in ...