A5050338142- Soil Carbon and Nitrogen Dynamics
- Peatlands and Wetlands Ecology
- Soil and Water Nutrient Dynamics
- Forest Ecology and Biodiversity Studies
- Forest Management and Policy
- Soil erosion and sediment transport
- Soil and Unsaturated Flow
- Groundwater flow and contamination studies
- Fire effects on ecosystems
- Heavy metals in environment
- Clay minerals and soil interactions
- Iron oxide chemistry and applications
- Forest Biomass Utilization and Management
- Radioactive element chemistry and processing
- Geology and Paleoclimatology Research
- Phosphorus and nutrient management
- Plant nutrient uptake and metabolism
- Mycorrhizal Fungi and Plant Interactions
- Nanoparticles: synthesis and applications
- Lichen and fungal ecology
- Mine drainage and remediation techniques
- Ecology and Vegetation Dynamics Studies
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Fecal contamination and water quality
University of Freiburg
2016-2025
University Medical Center Freiburg
2020-2024
Universitätsklinik für Hals-, Nasen- und Ohrenheilkunde
2020-2023
World Economic Forum
2022
Amt für Umwelt
2022
GeoInformation (United Kingdom)
2022
Institute of Forest Science
2021
Technische Universität Berlin
2003-2012
Fraunhofer Institute for Production Systems and Design Technology
2012
Charité - Universitätsmedizin Berlin
2008-2010
Phosphorus (P) is an important macronutrient for all biota on earth but similarly a finite resource. Microorganisms play both sides of the fence as they effectively mineralize organic and solubilize precipitated forms soil phosphorus conversely also take up immobilize P. Therefore, we analysed role microbes in two beech forest soils with high low P content by direct sequencing metagenomic deoxyribonucleic acid. For inorganic solubilization, significantly higher microbial potential was...
Abstract Phosphorus is one of the major limiting factors primary productivity in terrestrial ecosystems and, thus, P demand plants might be among most important drivers soil and ecosystem development. The cycling forest seems an ideal example to illustrate concept nutrition. Ecosystem nutrition combines extents traditional concepts nutrient ecology. extension consider also loading unloading cycles impact acquiring recycling processes on overall properties. aims integrate related aspects at...
Phosphorus availability may shape plant–microorganism–soil interactions in forest ecosystems. Our aim was to quantify the between soil P and nutrition strategies of European beech (Fagus sylvatica) forests. We assumed that plants microorganisms P-rich forests carry over mineral-bound into biogeochemical cycle (acquiring strategy). In contrast, P-poor ecosystems establish tight cycles sustain their demand (recycling tested if this conceptual model on supply-controlled consistent with data...
Abstract Understanding and quantification of phosphorus (P) fluxes are key requirements for predictions future forest ecosystems changes as well transferring lessons learned from natural to croplands plantations. This review summarizes evaluates the recent knowledge on mechanisms, magnitude, relevance by which dissolved colloidal inorganic organic P forms can be translocated within or exported ecosystems. Attention is paid hydrological pathways losses at soil profile landscape scales,...
Nanoparticles enter soils through various pathways. In the soil, they undergo interactions with solution and solid phase. We tested following hypotheses using batch experiments: i) colloidal stability of Ag NP increases sorption soil-borne dissolved organic matter (DOM) thus inhibits aggregation; ii) presence DOM suppresses oxidation; iii) surface charge governs onto soil particles. Citrate-stabilized bare NPs were equilibrated (colloid-free) extracted from a floodplain for 24h. removed...
Agroforestry is often discussed as a strategy that can be used both for the adaptation to and mitigation of climate change effects. The southern Africa predicted severely affected by such changes. With agriculture noted continent’s largest economic sector, issues food security land degradation are in forefront. In light concerns we review current literature investigate if agroforestry systems (AFS) suitable response challenges besetting traditional agricultural caused changing climate....
We review the state‐of‐the‐art of cross‐disciplinary knowledge on phosphorus (P) cycling in temperate forest ecosystems, focused at studies from hydrology, biology, biogeochemistry, soil‐, and geosciences. Changes soil P stocks during long‐term ecosystem development are addressed briefly; general ranges specific pools fluxes within presumed underlying processes covered more depth. Wherever possible, we differentiate between coniferous deciduous forests. As most important pools, mineral soil,...
Reduced carbon assimilation by trees is often considered to lower the overall sink function of drought-stressed forests. However, soil organic (SOC) stocks may respond differently drought than ecosystem flux dynamics, leading imprecise predictions sequestration when one value inferred from other. As a major component matter, SOC largest actively cycling terrestrial reservoir, and thus fulfills various important services. Yet, there uncertainty about how quantity quality in temperate This...
Summary Trees are known to be atmospheric methane (CH 4 ) emitters. Little is about seasonal dynamics of tree CH fluxes and relationships environmental conditions. That prevents the correct estimation net annual forest exchange. We aimed explore contribution stem emissions determined mature European beech ( Fagus sylvatica stems adjacent soil in a typical temperate White Carpathians with high spatial heterogeneity moisture. The were sources, whereas was sink. High emitters showed clear...
Summary Loss of phosphorus (P) from agriculture contributes to the eutrophication surface waters. We have assessed magnitude and controls P leaching risk colloid‐facilitated transport sandy soils in Münster. Concentrations soluble reactive drainage water groundwater were monitored 0.9 35 m depth. Total concentrations, saturation, sorption isotherms soil samples determined. dispersible colloidal investigated. The concentrations close background (< 20 µg l −1 ). Median excess 100 found down...
Liming is a common technique suggested for the stabilization of shooting range sites. We investigated effect an increase in pH on mobilization soluble and dispersible (colloidal) Pb, As, Sb. Our hypothesis was that addition divalent cations counteracts pH-induced colloidal metal(loid)s. determined (operationally defined as fraction < 10 nm obtained after centrifugation) (filter cut-off 1200 nm) Sb, Fe, C(org) concentrations filtered suspensions batch extracts topsoil samples (C(org): 8%)...
Abstract Riparian forests are assumed to play a crucial role in the global carbon cycle. However, little data available on C stocks of floodplains comparison other terrestrial ecosystems. In this study, we quantified aboveground biomass and soils riparian vegetation types at 76 sampling sites Donau‐Auen National Park Austria. Based our results remotely sensed map, estimated total stocks. Carbon (up 354 t ha –1 within 1 m below surface) were huge compared As expected, different showed texture...
Abstract Quantifying and understanding fluxes of methane (CH 4 ) carbon dioxide (CO 2 in natural soil–plant–atmosphere systems are crucial to predict global climate change. Wetland herbaceous species or tree at waterlogged sites known emit large amounts CH . Upland forest soils regarded as sinks like upland beech not significantly Yet, data scarce this assumption needs be tested. We combined measurements soil–atmosphere stem–atmosphere CO 4, soil gas profiles assess the contribution...
Long-term irrigation with untreated wastewater can lead to an accumulation of antibiotic substances and resistance genes in soil. However, little is known so far about effects wastewater, applied for decades, on the abundance IncP-1 plasmids class 1 integrons which may contribute spread environment, their correlation heavy metal concentrations. Therefore, a chronosequence soils that were irrigated from 0 100 years was sampled Mezquital Valley Mexico dry season. The total community DNA...
Sustainable forest management requires understanding of ecosystem phosphorus (P) cycling. Lang et al. (2017) [Biogeochemistry, https://doi.org/10.1007/s10533-017-0375-0] introduced the concept P-acquiring vs. P-recycling nutrition strategies for European beech (Fagus sylvatica L.) forests on silicate parent material, and demonstrated a change from to P-rich P-poor sites. The present study extends this rock-based assessment sites with soils formed carbonate bedrock. For all sites, it presents...
Summary Chloropyromorphite, CPM, Pb 5 (PO 4 ) 3 Cl, is one of the most insoluble lead minerals. Inducing formation CPM by application phosphate to soil has been suggested for immobilizing at contaminated sites. We have examined effect organic matter on completeness and rate precipitation particle size mobility crystals. did experiments pH 3–7 with varying content dissolved C, 0–72 mg C l −1 , mixing Pb(NO 2 (0.5 mmol (2 solutions. The was extracted from samples a forest floor. precipitates...