A5004330813- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Microbial Community Ecology and Physiology
- Isotope Analysis in Ecology
- Geochemistry and Geologic Mapping
- Plant Ecology and Soil Science
- Geology and Paleoclimatology Research
- Peatlands and Wetlands Ecology
- Pesticide and Herbicide Environmental Studies
- Gut microbiota and health
- Phosphorus and nutrient management
- Land Use and Ecosystem Services
- Ecology and Vegetation Dynamics Studies
- Soil and Environmental Studies
- Indigenous Studies and Ecology
- Conservation, Biodiversity, and Resource Management
- Pharmaceutical and Antibiotic Environmental Impacts
- Chromium effects and bioremediation
- Agriculture and Rural Development Research
- Climate change and permafrost
- Wastewater Treatment and Nitrogen Removal
- Botany and Plant Ecology Studies
- Polar Research and Ecology
- Soil Geostatistics and Mapping
- Heavy metals in environment
ETH Zurich
2020-2025
University of Vienna
2019-2023
Laboratoire des Sciences du Climat et de l'Environnement
2023
Ghent University Hospital
2023
Terrestrial Ecosystem Research Network
2019
Abstract Organic matter accumulation in soil is understood as the result of dynamics between mineral‐associated (more decomposed, microbial derived) organic and free particulate (less plant matter. However, from regional to global scales, patterns drivers behind main carbon (SOC) fractions are not well remain poorly linked pedogenetic variation across types. Here, we separated SOC associated with silt‐ clay‐sized particles (S + C), stable aggregates (>63 μm, SA) (POM) a diverse range...
Abstract. A central question in carbon research is how stabilization mechanisms soil change over time with development and this reflected qualitative changes organic matter (SOM). To address matter, we assessed the influence of geochemistry on bulk SOM composition along a chronosequence California, USA, spanning 3 million years. This was done by combining data mineralogy texture from previous studies additional measurements total (C), stable isotope values (δ13C δ15N), spectral information...
Soil microbial traits and functions play a central role in soil organic carbon (SOC) dynamics. However, at the macroscale (regional to global) it is still unresolved whether (i) specific environmental attributes (e.g., climate, geology, types) or (ii) community composition drive key directly. To address this knowledge gap, we used 33 grassland topsoils (0-10 cm) from geoclimatic gradient Chile. First, incubated soils for 1 week favorable standardized conditions quantified wide range of such...
Soil organic matter (SOM) quantity drives soil bacterial community composition from the regional to global scale. Qualitative characteristics of SOM are known affect communities in manipulation experiments. However, it remains unresolved how strongly at macroscale. Here, we investigated versus qualitative shape along a biogeochemical gradient grassland soils. We assessed relative abundance patterns bacteria and characterised based on scalable methods. Soils with higher content (along...
Climate change rapidly alters the conditions which govern differentiation of soils, with implications for wide range indispensable ecosystem functions that soils provide. The ability to perform these in future will depend on how quickly soil physicochemical and biotic properties respond warming. On one hand, development is a process takes millennia. other processes are mediated by chemical microbial reactions can be very rapid, potentially altering functioning over period months years. In...
Introduction Organic phosphorus (Po) compounds constitute an important pool in soil P cycling, but their decomposition dynamics are poorly understood. Further, it has never been directly tested whether low molecular weight Po taken up by microbes intact form, which reduces the dependence of acquisition on extracellular phosphatases. Methods We investigated short-term fate (24 h) five 33P-labelled (teichoic acids, phospholipids, DNA, RNA and soluble organophosphates) inorganic (Pi) two soils....
Abstract. Efforts to understand and model the current future behavior of global phosphorus (P) cycle are limited by availability data on rates soil P processes, as well their environmental controls. Here, we present a novel isotope pool dilution approach using 33P labeling live sterile soils, which allows for high-quality gross fluxes inorganic (Pi) sorption desorption, organic mineralization microbial Pi uptake be obtained. At same time, net immobilization 33Pi microbes abiotic can easily...
Carbon dynamics Partial least-squares regression Random forestThe role of soil in the global carbon cycle and carbon-climate feedback mechanisms has attracted considerable interest recent decades.Consequently, development simple, rapid, inexpensive methods to support studies on is interest.Near-infrared spectroscopy (NIRS) emerged as a rapid cost-effective method for measurements properties.The aim this study was develop validate predictive model δ 13 C values using NIRS various profiles...
Abstract. Efforts to understand and model the current future behavior of global phosphorus (P) cycle are limited by availability data on gross rates soil P processes, as well its environmental controls. We here present a novel isotope pool dilution approach using 33P labelling live sterile soils, which allows obtain high quality fluxes inorganic (Pi) sorption desorption, organic mineralization microbial Pi uptake. At same time, net immobilization 33Pi microbes abiotic can be easily derived...
Soil microbes perform important functions in the soil organic carbon (SOC) cycle and microbial decomposition activity is a major determinant of budget soil. It well-established that physiology directly affected by temperature moisture. However, it less clear to what extent environmental setting (i.e. long-term climatic conditions, physicochemistry) vs. actors bacterial fungal community composition) control cycling SOC absence strong direct physiological constraints such as moisture...
Deforestation for cropland expansion in the sloping landscapes along East African Rift system causes severe soil erosion and thus loss of fertile, organic rich topsoil. However, varying effect land degradation region on soils developed from different parent material - which may influence fertility carbon stabilization are still largely unknown. To examine these factors, we compared (SOC) indicators undisturbed forest topsoils with hillslope a chronosequence after deforestation...
ABSTRACT Soil microorganisms carry out many processes that are fundamental to soil functions. Among the millions of microbial cells present in a gram soil, however, less than 2% commonly estimated be active at any point time. Because respiratory response bulk carbon substrate addition would expected reflect number cells, we hypothesized positive correlation between and respiration rates during substrate-induced (SIR) assays. To test this, monitored cell counts 24-h incubations agricultural...
Abstract. A central question in carbon research is how stabilization mechanisms soil change over time with development and this reflected qualitative changes of organic matter (SOM). To address matter, we assessed the influence geochemistry on bulk SOM composition along a chronosequence California, USA spanning 3 million years. This was done by combining data mineralogy texture from previous studies additional measurements total (C), stable isotope values (δ13C δ15N), spectral information...
Abstract Organic matter accumulation in soil is understood as the result of dynamics between mineral-associated (often more decomposed, microbial derived) organic and free particulate less plant matter. However, at global scales, patterns drivers behind main SOC reservoirs are not well remain poorly linked to pedogenetic variation across types that may impact stabilization. Here, we separated carbon (SOC) associated with silt- clay-sized particles (S + C), stable microaggregates (> 63 µm,...