A5019861231- Hydrology and Watershed Management Studies
- Soil and Water Nutrient Dynamics
- Groundwater flow and contamination studies
- Soil erosion and sediment transport
- Fish Ecology and Management Studies
- Hydrological Forecasting Using AI
- Hydrology and Sediment Transport Processes
- Water Quality and Pollution Assessment
- Groundwater and Isotope Geochemistry
- Aquatic Ecosystems and Phytoplankton Dynamics
- Flood Risk Assessment and Management
- Marine and coastal ecosystems
- Hydraulic flow and structures
- Water Quality Monitoring Technologies
- Wastewater Treatment and Nitrogen Removal
- Agriculture and Rural Development Research
- Water Quality Monitoring and Analysis
- Hydrology and Drought Analysis
- Geological formations and processes
- Environmental Science and Water Management
- Peatlands and Wetlands Ecology
- Aquatic and Environmental Studies
- Water Systems and Optimization
- Freshwater macroinvertebrate diversity and ecology
- Case Reports on Hematomas
Soil Agro and Hydrosystems Spatialization
2016-2025
L'Institut Agro
2020-2025
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2014-2025
Institut Agro Rennes-Angers
2015-2024
Indian Institute of Science Bangalore
2023
Centre for Expertise in the Treatment and Management of Water
2017
Japan External Trade Organization
2015
Institut National de la Recherche Agronomique
2014-2015
St. Thomas Hospital
2014
UK Centre for Ecology & Hydrology
2014
In spite of trying to understand processes in the same spatial domain, catchment hydrology and water quality scientific communities are relatively disconnected so their respective models. This is emphasized by an inadequate representation transport processes, both catchment‐scale hydrological While many models at scale only account for pressure propagation not mass transfer, typically limited overly simplistic representations flow processes. With objective raising awareness this issue...
Core Ideas OZCAR is a network of sites studying the critical zone. covers various disciplines. will help disciplines to work together for better representation and modeling The French zone initiative, called (Observatoires de la Zone Critique–Application et Recherche or Critical Observatories–Application Research) National Research Infrastructure (RI). OZCAR‐RI instrumented sites, bringing 21 pre‐existing research observatories monitoring different compartments situated between “the rock...
Abstract Hydrological models frequently suffer from limited predictive power despite adequate calibration performances. This can indicate insufficient representations of the underlying processes. Thus, ways are sought to increase model consistency while satisfying contrasting priorities increased complexity and equifinality. In this study, value a systematic use hydrological signatures expert knowledge for increasing was tested. It found that simple conceptual model, constrained by four...
Understanding how water and solutes enter propagate through freshwater landscapes in the Anthropocene is critical to protecting restoring aquatic ecosystems ensuring human security. However, high hydrochemical variability headwater streams, where most carbon nutrients river networks, has hindered effective modelling management. We developed an analytical framework informed by landscape ecology catchment hydrology quantify spatiotemporal across scales, which we tested 56 catchments, sampled...
Abstract In spite of recent progress, hydrological processes underlying observed water quality response patterns, such as the emergence near‐chemostatic conditions and fractal 1/f α scaling stream chemistry, are not completely understood. Analysing Cl − tracer data for two intensely managed, hydrologically contrasting yet biogeochemically similar catchments we tested if (1) a semi‐distributed, conceptual model can simultaneously reproduce catchment scale biogeochemical responses, (2) legacy...
Abstract Intermittent rivers and ephemeral streams (IRES) are now recognized to support specific freshwater biodiversity ecosystem services represent approximately half of the global river network, a fraction that is likely increase in context changes. Despite large research efforts on IRES during past few decades, there need for developing systemic approach considers their hydrological, hydrogeological, hydraulic, ecological, biogeochemical properties processes, as well interactions with...
Abstract. While most hydrological models reproduce the general flow dynamics, they frequently fail to adequately mimic system-internal processes. In particular, relationship between storage and discharge, which often follows annual hysteretic patterns in shallow hard-rock aquifers, is rarely considered modelling studies. One main reason that catchment difficult measure, another one objective functions are usually based on individual variables time series (e.g. discharge). This reduces...
Management of agricultural diffuse pollution to water remains a challenge and is influenced by the complex interactions rainfall-runoff pathways, soil nutrient management, landscape heterogeneity biogeochemical cycling in receiving bodies. Amplified cycles weather can also influence loss although they are less considered policy reviews. Here, we present development climate-chemical indicators highly monitored catchments Western Europe. Specifically, investigated influences relationships...
Quantifying nutrient attenuation at watershed scales requires long-term water chemistry data, discharge, and detailed input chronicles. Consequently, estimates are largely limited to research areas or modeling studies, constraining understanding of the ecological characteristics controlling complicating efforts protect restore quality in developed developing regions. Here, we combined data a broad suite biogeochemical parameters from 49 watersheds northwestern France test how well...
Abstract Despite extensive research on nitrate export and removal, nutrient contamination remains a major threat to water bodies worldwide. At the local scale, removal is governed by biogeochemical conditions that vary in space time, making integration entire landscapes critical. Water transit times have often been used describe solute transport, but relation between age at catchment scale still poorly understood. We test hypothesis peaks when fraction of young discharge its minimum, because...
The profound influence of climate change on the hydrological cycle raises concerns about its potential impacts water quality, particularly in agricultural catchments. Here, we analysed 200 storm events monitored for nitrate and total phosphorus (TP) at sub-hourly intervals from 2016 to 2023 Kervidy-Naizin catchment (north-western France). Using Extreme Value theory, identified with extreme concentrations compared their hydroclimatic characteristics those non-extreme events. We hypothesised...
Core Ideas AgrHyS is a long‐term observatory of the agroecosystem. supports strongly interdisciplinary environmental research. offers an original experimental setup to explore soil–groundwater–water–plants–atmosphere continuum. and innovative techniques for monitoring. The agro‐hydrological dedicated studying processes controlling hydro‐chemical fluxes in headwater catchments response effects agricultural. composed instrumented located western France temperate oceanic climate that are...
Abstract Elevated nitrogen (N) concentrations have detrimental effects on aquatic ecosystems worldwide, calling for effective management practices. However, catchment-scale annual mass-balance estimates often exhibit N deficits and time lags between the trajectory of net inputs that riverine export. Here, we analyzed 40-year series surplus nitrate-N loads in 16 mesoscale catchments (104–10 135 km 2 ) a temperate agricultural region, with aim to (1) investigate fate ‘missing N’, either still...
Abstract We tested an empirical modeling approach using relatively low‐cost continuous records of turbidity and discharge as proxies to estimate phosphorus (P) concentrations at a subhourly time step for estimating loads. The method takes into account nonlinearity hysteresis effects during storm events, hydrological conditions variability. High‐frequency total P reactive originating from four contrasting European agricultural catchments in terms loads were used test the method. models...
Abstract Phosphorus (P) transfer during storm events represents a significant part of annual P loads in streams and contributes to eutrophication downstream water bodies. To improve understanding dynamics, automated or semiautomated methods are needed extract meaningful information from ever‐growing quality measurement data sets. In this paper, seasonal patterns dynamics identified two contrasting watersheds (arable grassland) through Dynamic Time Warping (DTW) combined with k‐means...
Excess nutrients from agriculture have caused persistent eutrophication in aquatic ecosystems worldwide. Here, we present a conceptual framework for landscape management to achieve one or several water quality targets along the river continuum headwaters estuaries. Based on monitoring of representative and downstream reaches, divide catchments into elementary units defined by physicalecological properties anthropogenic land use. We use theoretical simulation evaluate our hypothesis that...
Abstract. The consistency of hydrological models, i.e. their ability to reproduce observed system dynamics, needs be improved increase predictive power. As using streamflow data alone calibrate models is not sufficient constrain them and render consistent, other strategies must considered, in particular additional types data. aim this study was test whether simultaneous calibration dissolved organic carbon (DOC) nitrate (NO3-) concentrations along with the a parsimonious solute-transport...
Abstract As a phenomenon integrating climate conditions and hydrological control of the connection between streams terrestrial dissolved organic carbon (DOC) sources, groundwater dynamics patterns stream DOC characteristics (concentrations fluxes). Influence intra‐annual variations in level, discharge climatic factors on concentrations fluxes were assessed over 13 years at headwater watershed Kervidy‐Naizin (5 km 2 ) western France. Four seasonal periods delineated within each year according...
Abstract. Exchanges between groundwater and surface water play a key role for ecosystem preservation, especially in headwater catchments where discharge into streams highly contributes to streamflow generation maintenance. Despite several decades of research, investigating the spatial variability still remains challenging mainly because groundwater/surface interactions are controlled by multi-scale processes. In this context, we evaluated potential using FO-DTS (fibre optic distributed...