A5088669137- Soil Carbon and Nitrogen Dynamics
- Coastal wetland ecosystem dynamics
- Geology and Paleoclimatology Research
- Soil Geostatistics and Mapping
- Soil erosion and sediment transport
- Soil and Water Nutrient Dynamics
- Peatlands and Wetlands Ecology
- Rangeland Management and Livestock Ecology
- Microbial Community Ecology and Physiology
- Crop Yield and Soil Fertility
- Hydrology and Sediment Transport Processes
- Geological and Geophysical Studies
- Geochemistry and Geologic Mapping
- Isotope Analysis in Ecology
- Climate change impacts on agriculture
- Atmospheric and Environmental Gas Dynamics
- Bioenergy crop production and management
- Methane Hydrates and Related Phenomena
- Aquatic Ecosystems and Phytoplankton Dynamics
- Climate change and permafrost
- Aeolian processes and effects
- Agronomic Practices and Intercropping Systems
- Coastal and Marine Dynamics
- Soil and Unsaturated Flow
- Hydrology and Watershed Management Studies
ETH Zurich
2018-2024
University of Zurich
2024
École Polytechnique Fédérale de Lausanne
2020-2022
KU Leuven
2015-2019
Abstract Tidal marshes are vegetated coastal ecosystems that often considered as hotspots of atmospheric CO 2 sequestration. Although large amounts organic carbon ( OC ) indeed being deposited on tidal marshes, there is no direct link between high deposition rates and sequestration due to two main reasons. First, the may become rapidly decomposed once it buried and, second, a significant part preserved be allochthonous has been sequestered elsewhere. In this study we aimed identify...
Tidal marshes store large amounts of organic carbon in their soils. Field data quantifying soil (SOC) stocks provide an important resource for researchers, natural managers, and policy-makers working towards the protection, restoration, valuation these ecosystems. We collated a global dataset tidal marsh (MarSOC) from 99 studies that includes location, depth, site name, dry bulk density, SOC, and/or matter (SOM). The MarSOC 17,454 points 2,329 unique locations, 29 countries. generated...
Abstract. The concept of soil organic carbon (SOC) saturation emerged a bit more than 2 decades ago as our mechanistic understanding SOC stabilization increased. Recently, the further testing across wide range types and environments has led some people to challenge fundamentals C saturation. Here, we argue that, test this concept, one should pay attention six fundamental principles or “rights” (R's): right measures, units, dispersive energy application, type, clay level. Once take care those...
Abstract. Tidal marshes are sedimentary environments and among the most productive ecosystems on Earth. As a consequence they have potential to reduce atmospheric greenhouse gas concentrations by sequestering organic carbon (OC). In past decades, research soil (SOC) storage in marsh has focused salt marshes, leaving dynamics brackish freshwater largely understudied neglecting diversity tidal marshes. We therefore conducted an extensive sampling campaign quantify characterize SOC stock along...
Agricultural decision support systems (DSS) are mostly focused on increasing the supply of individual soil functions such as e.g. primary productivity or nutrient cycling, while neglecting other important functions, water purification and regulation, climate regulation carbon sequestration, biodiversity habitat provision. Making right management decisions for long-term sustainability is therefore challenging, farmers farm advisors would greatly benefit from an evidence-based DSS targeted...
Abstract With increasing societal demands for food security and environmental sustainability on land, the question arises: to what extent do synergies trade‐offs exist between soil functions how can they be measured across Europe? To address this challenge, we followed functional land management approach assessed five functions: primary productivity, water regulation purification, climate regulation, biodiversity nutrient cycling. Soil, data were collected from 94 sites covering 13...
Abstract. Mangroves are widely recognised as key ecosystems for climate change mitigation they capture and store significant amounts of sediment organic carbon (SOC). Yet, there is incomplete knowledge on how sources SOC their differential preservation vary between mangrove sites in relation to environmental gradients. To address this, depth profiles were sampled from ranging river-dominated marine-dominated including old young the Guayas delta (Ecuador). The stable isotope ratios (δ13C)...
Abstract. In sub-Saharan Africa, maize is one of the most important staple crops, but long-term cropping with low external inputs has been associated loss soil fertility. While adding high-quality organic resources combined mineral fertilizer proposed to counteract this fertility loss, effectiveness and interactions site properties still require more understanding. This study used repeated measurements over time assess effect different quantities qualities resource addition nitrogen (N) on...
Abstract. Over the past years, microbially driven models have been developed to improve simulations of soil organic carbon (SOC) and put forward as an improvement assess fate SOC stocks under environmental change. While these include a better mechanistic representation cycling compared cascading-reservoir-based approaches, complexity implies that data on are insufficient constrain additional model parameters. In this study, we constructed novel depth-explicit (SOILcarb – Simulation Organic...
Crop productivity in sub-Saharan Africa cannot be substantially improved without simultaneously addressing short-term crop nutrient demand and long-term soil fertility. Integrated fertility management tackles both by the combined application of mineral fertilizers organic resource inputs but few studies examined its' effectiveness. To address this knowledge gap, study analysed maize yield trends four (31–37 cropping seasons) field experiments Kenya with contrasting textures under different...
Abstract Tidal marshes are threatened coastal ecosystems known for their capacity to store large amounts of carbon in water-logged soils. Accurate quantification and mapping global tidal soil organic (SOC) stocks is considerable value conservation efforts. Here, we used training data from 3710 unique locations, landscape-level environmental drivers a marsh extent map produce global, spatially explicit SOC storage at 30 m resolution. Here show the total stock 1 be 1.44 Pg C, with third this...
Abstract. Over the past decades, average global wheat yields have increased by about 250 %, mainly due to cultivation of high-yielding cultivars. This selection process not only affected aboveground parts plants, but in some cases also reduced root biomass, with potentially large consequences for amount organic carbon (OC) transferred soil. To study effect breeding cultivars on subsoil OC dynamics, two old and new from Swiss program were grown one growing season 1.5 m deep lysimeters pulse...
Abstract Tidal marshes are threatened coastal ecosystems known for their capacity to store large amounts of carbon in water-logged soils. Accurate quantification and mapping global tidal soil organic (SOC) stocks is considerable value conservation efforts. Here, we used training data from 3,710 unique locations, landscape-level environmental drivers a newly developed marsh extent map produce the first global, spatially-explicit SOC storage at 30 m resolution. We estimate total stock 1 be...
Abstract. The concept of soil organic carbon (SOC) saturation emerged a bit more than 2 decades ago as our mechanistic understanding SOC stabilization increased. Recently, the further testing across wide range types and environments has led some people to challenge fundamentals C saturation. Here, we argue that test concept, one should pay attention 6 fundamental principles or rights (R’s): right measures, units, fractionation method, type, mineralogy, level. Once take care those studies,...
Soils perform many functions that are vital to societies, among which their capability regulate global climate has received much attention over the past decades. An assessment of extent soils a specific function is not only important appropriately value current capacity, but also make well-informed decisions about how and where change soil management align delivered with societal demands. To obtain an overview capacity different functions, accurate easy-to-use models necessary. A problem...
Summary Tidal marshes are coastal and estuarine ecosystems that store large amounts of sedimentary organic carbon (OC). Despite the valuable ecosystem services they deliver, tidal have been converted to other land‐use types over past centuries. Although previous studies reported decreases in soil (SOC) stocks after marsh embankment, knowledge on magnitude rate OC losses is still limited. Here, we studied effect stepwise embankments brackish salt subsequent progradation SOC Scheldt estuary...
Abstract Take‐Home Message Climate warming is transforming the Arctic at an unprecedented rate with previously barren and sparsely vegetated landscapes undergoing “greening”. We postulate that observed vegetation changes throughout are not only tied to warming, but in soil properties their impacts on plants microbial communities. A key understanding extent patterns of greening formerly environments will be unravel interactions between biosphere role genesis.
Abstract. Maintaining soil organic matter (SOM) is crucial for healthy and productive agricultural soils requires understanding at the process level, including role of SOM protection by aggregates connection between microbial growth aggregate formation. We developed Soil Aggregation through Microbial Mediation (SAMM) model, to represent this important connection. The pools SAMM are fully measurable, we calibrated evaluated it against data from a long-term bare fallow experiment in tropical...
Abstract. Predicting the quantity of soil organic carbon (SOC) requires understanding how different factors control amount SOC. Land use has a major influence on function as sink, shown by substantial (OC) losses from upon deforestation. However, predicting degree to which land change affects OC content in soils and depth down this occurs context-specific information related to, for example, climate, geochemistry, history. In study, 266 samples forests agricultural fields were collected 94...
Abstract. Sustainable intensification schemes such as integrated soil fertility management (ISFM) are a proposed strategy to close yield gaps, increase fertility, and achieve food security in sub-Saharan Africa. Biogeochemical models DayCent can assess their potential at larger scales, but these need be calibrated new environments rigorously tested for accuracy. Here, we present Bayesian calibration of DayCent, using data from four long-term field experiments Kenya leave-one-site-out...
Abstract. Elevated phosphate (PO4) concentrations can harm the ecological status in water by eutrophication. In majority of surface waters lowland regions such as Flanders (Belgium), local PO4 levels exceed limits defined environmental policy and fail to decrease, despite decreasing total phosphorus (P) emissions. order underpin definition current limits, this study was set up identify pre-industrial background concentration Scheldt River, a tidal river Flanders. We used sedimentary records...