A5049604539- Soil erosion and sediment transport
- Hydrology and Sediment Transport Processes
- Hydrology and Watershed Management Studies
- Land Use and Ecosystem Services
- Fish Ecology and Management Studies
- Remote-Sensing Image Classification
- Remote Sensing in Agriculture
- Geology and Paleoclimatology Research
- Geological formations and processes
- Agriculture and Rural Development Research
- Landslides and related hazards
- Remote Sensing and LiDAR Applications
- Groundwater and Watershed Analysis
- Water management and technologies
- Soil and Water Nutrient Dynamics
- Fish Biology and Ecology Studies
- 3D Surveying and Cultural Heritage
- Freshwater macroinvertebrate diversity and ecology
- Remote Sensing and Land Use
- French Urban and Social Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Geological and Geophysical Studies Worldwide
- Urban Heat Island Mitigation
- Tree Root and Stability Studies
- Flood Risk Assessment and Management
Institut Scientifique de Service Public
2016-2025
University of Liège
2010-2021
Laboratoire de Géographie Physique
2008-2020
In Cameroon, like in other African countries, infusions of Artemisia afra and annua are widely used for the management health-related problems, including malaria. The secondary metabolite contents medicinal plants vary between different geographical regions seasons, directly influencing their effectiveness treating ailments. This study explores phytochemical diversity anti-plasmodial potential A. from distinct locations within aiming to define optimal chemical composition terms activity....
ABSTRACT Several methods were employed in the Ardennian rivers (Belgium) to determine depth of active layer mobilized during floods and evaluate bedload discharge associated with these events. The use scour chains has shown that is systematically less than b ‐axis average particle size ( D 50 ) elements which compose surface riffles. This indicates only a partial transport exists low magnitude floods. been evaluated by combining data obtained using technique distance covered tracers....
Earth observation technologies offer non-intrusive solutions for monitoring complex and risky sites, such as landfills. In particular, unmanned aerial vehicles (UAVs) the ability to acquire data at very high spatial resolution, with full control of temporality required desired application. The versatility UAVs, both in terms flight characteristics on-board sensors, makes it possible generate relevant geodata a wide range landfill activities. This study aims propose robust tool provide...
Over the last few decades, small-scale irrigation has been implemented in Burkina Faso as a strategy to mitigate impacts of adverse climate conditions. However, development irrigated perimeters around small and medium water reservoirs put resources under significant pressure, given uncontrolled exploitation lack efficacious management plan. Insights into changes areas these are therefore crucial for their sustainable while meeting different agricultural needs. They will help center policy...
Abstract In Belgium, most flood events occur in winter as a result of intense precipitation but also through the abrupt melting snowpack that covers Ardennes summits. These conditions favourable to floods exhibit decreasing trend over 1959–2010 resulting from reduction snow accumulation, although extreme show positive, albeit non‐significant signal. this study, evolution these trends warmer climates is investigated by using future projections performed with regional climate model MAR...
Due to its cost-effectiveness and repeatability of observations, high resolution optical satellite remote sensing has become a major technology for land use cover mapping. However, inventory compilers the Land Use, Use Change, Forestry (LULUCF) sector are still mostly relying on annual census periodic surveys such inventories. This study proposes new approach based per-pixel supervised classification using Sentinel-2 imagery from 2016 mapping greenhouse gas emissions removals associated with...
Land Use/Cover changes are crucial for the use of sustainable resources and delivery ecosystem services. They play an important contribution in climate change mitigation due to their ability emit remove greenhouse gas from atmosphere. These emissions/removals subject inventory which must be reported annually under United Nations Framework Convention on Climate Change. This study investigates Sentinel-2 data analysing lands conversion associated Use, Use Change Forestry sector Wallonia region...
Flash floods and muddy may cause severe human material damage despite their small spatial extent low occurrence. In late May 2008, a major event has affected the area of Liège. This paper describes methodology used to reconstruct hydrosedimentological parameters flood from geomorphological evidences observed in field. Bed load suspended transport rates estimated during this extreme were compared average values other Walloon rivers more specifically Ardennes Massif. The distribution temporal...
Abstract Much research has been devoted to the development of numerical models river incision. In settings where bedrock channel erosion prevails, numerous studies have used field data calibrate widely acknowledged stream power model incision and discuss impact variables that do not appear explicitly in model's simplest form. However, most conducted areas active tectonics, displaying a clear geomorphic response tectonic signal. Here, we analyze traces left drainage network 0.7 My after...
Abstract It is still debated whether the primary control on middle Pleistocene denudation of uplifted Ardennes massif (western Europe) tectonic or climatic. Here, based geomorphological observations, we calculate amount river incision and interfluve in Meuse basin upstream Maastricht since 0·7 Ma show that main response to forcing was incision. This allows us provide first‐order estimates climatic contributions Ardennes. From a dataset 71 remnants terrace level dated ∼0·7 Ma, first derive...
Abstract The variables commonly used to describe the physical habitat of Atlantic salmon Salmo salar parr are average velocity, water depth, and substrate. A variety micro‐ mesohabitat models have been developed using these assess quality. However, live in highly turbulent streams rivers which intense fluctuations velocity occur. Laboratory experiments shown that turbulence affects behavior energetics fish. Nevertheless, use relation strong temporal variability natural environments has...
L’analyse du transport de la charge fond plusieurs rivières massif ardennais (Belgique) par différentes techniques marquage galets (peinture, métallique, émetteurs radio) a permis d’identifier le débit critique où débute charriage. Pour les plus importantes (plus 500 km 2 ), mise en mouvement se produit à des débits légèrement inférieurs au plein bord (0,7 1 Q b qui présentent moyenne 5 11 jours an. taille intermédiaire (entre 100 et charriage un avoisinant 0,5 fois bord, avec une récurrence...
This study performed in the Patapédia River (Québec, Gaspésie) was designed to examine space utilization and mobility patterns of individual Atlantic salmon parr over short time scales with frequent detections position. In August 2004, n = 7 radio-tagged were located every 20 min during 10 tracking periods chosen take into account dawn, day, dusk night periods. Parr showed important inter variability patterns, occupying large home ranges (123 5602 m2) sometimes migrating 2 km upstream river....
Abstract. Simulating population distribution and land use changes in space time offer opportunities for smart city planning. It provides a holistic dynamic vision of fast changing urban environment to policy makers. Impacts, such as environmental health risks or mobility issues, policies can be assessed adapted consequently. In this paper, we suppose that “Smart” developments should sustainable, participative. This paper addresses these three objectives the context risk assessment Wallonia,...
Un ensemble de dix-neuf ouvrages protection berges en génie végétal a fait l'objet d'un suivi à court et long termes sur plusieurs rivières Wallonie. Les aménagements, dont la mise place remonte pour certains 20 ans, ont dans l'ensemble bien rempli leur rôle stabilisation berge, même si d'entre eux sont aujourd'hui partiellement détruits. Dans cas, l'endommagement des aménagements conduit une reprise l'érosion berge protéger. Le facteur principal dégradation est l'énergie crue destructrice....
Land cover maps contribute to a large diversity of geospatial applications, including but not limited land management, hydrology, use planning, climate modeling and biodiversity monitoring. In densely populated highly fragmented landscapes as observed in the Walloon region (Belgium), very high spatial resolution is required depict all infrastructures, buildings most structural elements semi-natural (like hedges small water bodies). Because resolution, vertical dimension needs explicit...
Urban planning is a challenge, especially when it comes to limiting land take. In former industrial regions such as Wallonia, the presence of large number brownfields, here called “redevelopment sites”, opens up new opportunities for sustainable urban through their revalorization. The Walloon authorities are currently managing an inventory more than 2200 sites, which requires significant amount time and resources update. this context, Sentinel satellites Terrascope platform, Collaborative...
The exploitation of urban-material spectral properties is increasing importance for a broad range applications, such as urban climate-change modeling and mitigation or specific/dangerous roof-material detection inventory. A new library dedicated to the roof material was created reflect regional diversity materials employed in Wallonia, Belgium. Walloon Roof Material (WaRM) accounts 26 spectra 350–2500 nm. Spectra were acquired using an ASD FieldSpec3 Hi-Res spectrometer laboratory...
Landfill managers are subject to obligations which include the regular monitoring of topographical and land cover (LC) evolution site. This research aims at developing a cost-effective non-intrusive methodology for mapping landfill LC features. To this end, state-of-the-art OBIA open-source workflow based on an integration GRASS GIS Python programming environment was adapted applied 3-cm optical UAV image acquired over site Hallembaye (Belgium). The results 8-class supervised classification...