A5079382416- Hydrology and Watershed Management Studies
- Flood Risk Assessment and Management
- Climate variability and models
- Soil erosion and sediment transport
- Geophysics and Gravity Measurements
- Land Use and Ecosystem Services
- Climate change impacts on agriculture
- Groundwater and Watershed Analysis
- Water resources management and optimization
- Hydrology and Drought Analysis
- Economic Growth and Fiscal Policies
- Agricultural Economics and Policy
- Plant Water Relations and Carbon Dynamics
- Soil and Unsaturated Flow
- Soil Moisture and Remote Sensing
- Agricultural risk and resilience
- Hydrological Forecasting Using AI
- Geological and Geophysical Studies
- Sustainable Agricultural Systems Analysis
- Hydropower, Displacement, Environmental Impact
- Environmental Conservation and Management
- GNSS positioning and interference
- Agricultural Innovations and Practices
- Coastal Management and Development
- Plant Growth and Agriculture Techniques
University of Bonn
2009-2018
University of Göttingen
2007-2008
Joint Research Centre
2001
Analyzing the spatial and temporal distribution of soil moisture is critical for ecohydrological processes sustainable water management studies in wetlands. The characterization dynamics its influencing factors agriculturally used wetlands pose a challenge data-scarce regions such as East Africa. High resolution good-quality time series data are rarely available gaps frequent due to measurement constraints device malfunctioning. Soil models that integrate meteorological conditions storage...
Land Use Cover Change (LULCC) has a significant impact on water resources and ecosystems in sub-Saharan Africa (SSA). On the basis of three research projects we aim to describe discuss potential, uncertainties, synergies science-policy interfaces satellite-based integrated for Kilombero catchment, comprising one major agricultural utilized floodplains Tanzania. LULCC was quantified at floodplain catchment scale analyzing Landsat 5 Sentinel 2 satellite imagery applying different adapted...
Deterioration of upland soils, demographic growth, and climate change all lead to an increased utilization wetlands in East Africa. This considerable pressure on wetland resources results trade-offs between those their related ecosystem services. Furthermore, relationships catchment attributes available water are one the key drivers that might degradation. To investigate impacts these developments catchment-wetland resources, Soil Water Assessment Tool (SWAT) was applied Kilombero Catchment...
This article illustrates the impact of potential future climate scenarios on water quantity in time and space for an East African floodplain catchment surrounded by mountainous areas. In Africa, agricultural intensification is shifting from upland cultivation into wetlands due to year-round availability fertile soils. These advantageous conditions might be hampered through change impacts. Additionally, water-related risks, like droughts flooding events, are likely increase. Hence, this study...
Abstract. In the Volta Basin, infrastructure watershed development with respect to impact of climate conditions is hotly debated due lack adequate tools model consequences such development. There an ongoing debate on further small and medium scale reservoirs water level Lake Volta, which essential for hydropower generation at Akosombo power plant. The GLOWA Project (GVP) has developed a Basin Water Allocation System (VB-WAS), decision support tool that allows assessing in basin availability...
Abstract Inadequate knowledge exists on the distribution of soil moisture and shallow groundwater in intensively cultivated inland valley wetlands tropical environments, which are required for determining hydrological regime. This study investigated spatial temporal variability along 4 positions segmented as riparian zone, bottom, fringe, slope an agriculturally used wetland Central Uganda. The determined regimes defined based deficit calculated from depth to table. For that, accuracy...
The impact of climate and land use/land cover (LULC) change continues to threaten water resources availability for the agriculturally used inland valley wetlands their catchments in East Africa. This study assessed LULC impacts on hydrological processes a tropical headwater catchment Uganda. model Soil Water Assessment Tool (SWAT) was applied analyze processes. An ensemble six regional models (RCMs) from Coordinated Regional Downscaling Experiment two Representative Concentration Pathways...
Abstract. Wetlands cover an area of approx. 18 Mio ha in the East African countries Kenya, Rwanda, Uganda and Tanzania, with still a relative small share being used for food production. Current upland agricultural use intensification these due to demographic growth, climate change globalization effects are leading over-exploitation resource base, followed by wetland use. We aim on translating, transferring upscaling knowledge experimental test-site properties, small-scale hydrological...
Analysis and interpretation of soil properties dynamics is a keystone in understanding the hydrologic responses yield potential floodplain wetlands. This study characterizes distribution spatial trends selected physical Kilombero floodplain, Tanzania. A total 76 composite samples were taken from 0 to 20 cm 40 depth regular grid design across three hydrological zones, related flooding intensity defined as fringe, middle, riparian during rainy season 2015. The analyzed for texture, bulk...
CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 38:155-169 (2009) - DOI: https://doi.org/10.3354/cr00778 Vulnerability of smallholder farmers ENSO-related drought in Indonesia Alwin Keil1,*, Nils Teufel2, Dodo Gunawan3, Constanze Leemhuis4 1Department Agricultural Economics and Social Sciences Tropics Subtropics, Universität Hohenheim (490a), 70593 Stuttgart, Germany...
Abstract An understanding of hydrology is a prerequisite for ensuring the successful management, conservation and restoration wetland environments. Frequently, however, little known about historical hydrological conditions, such as water levels, within wetlands. Moreover, many channel ditch systems in wetlands are not routinely monitored, except perhaps research purposes. A methodology presented herein which makes use satellite imagery to indirectly provide remotely sensed observations...
Summary: The present land cover of humid tropical catchment areas mainly regulates the flow vapour to atmosphere.Therefore use decisions play an important role for water balance a catchment. Studies that relate coverchanges with river discharge changes at mesoscale level are rare. This article applies anintegrated remote sensing and hydrological modelling approach analyse impact on resources First, change detection analysis Landsat/ ETM + satellite images wascarried out quantify Gumbasa...
Abstract. Precipitation anomalies caused by the warm phase (El Niño) of ENSO cycle lead to a strong decrease water resources in South-East Asia. The aim this work is study impact precipitation on balance mesoscale tropical catchment Central Sulawesi, Indonesia using scenario analysis. We applied statistically generated events validated hydrological model Palu River (2694 km2) investigate implications scenarios total annual balance, discharge regime and variability. Moreover we analysed...
Crop production in the tropics is subject to considerable climate variability caused by El Nino-Southern Oscillation (ENSO) phenomenon. In Southeast Asia, Nino causes comparatively dry conditions leading substantial declines of crop yields with severe consequences for welfare local farm households. Using a modelling approach that combines regression analysis linear programming and stochastic simulation, integrates climatic hydrologic results, objective this paper assess impact on...