Nicolas Surdyk

Nicolas Surdyk
French Geological Survey | BRGM · Direction Eau, Environnement, et Ecotechnologies

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41
Publications
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494
Citations

Publications

Publications (41)
Article
Full-text available
The FAIRWAY project reviewed approaches for protecting drinking water from nitrate and pesticide pollution. A comprehensive assessment of decision support tools (DSTs) used by farmers, advisors, water managers and policy makers across the European Union as an aid to meeting CAP objectives and targets was undertaken, encompassing paper-based guideli...
Article
Full-text available
Pollution of ground-and surface waters with nitrates from agricultural sources poses a risk to drinking water quality and has negative impacts on the environment. At the national scale, the gross nitrogen budget (GNB) is accepted as an indicator of pollution caused by nitrates. There is, however, little common EU-wide knowledge on the budget applic...
Article
Full-text available
Diffuse nitrogen (N) pollution from agriculture in groundwater and surface water is a major challenge in terms of meeting drinking water targets in many parts of Europe. A bottom-up approach involving local stakeholders may be more effective than national- or European-level approaches for addressing local drinking water issues. Common understanding...
Article
Groundwater nitrate contamination requires implementation of measures to reduce the impact of agricultural sources. Models appear as a way to understand the nitrate transfer and its temporal trend as well as a forecasting tool useful for decision making. Given their ease of implementation compared to discretized models, lumped models seem appropria...
Article
Contaminants in groundwater are a major issue worldwide. Temporal trends of such occurrences in French groundwaters were evaluated for several active substances of pesticides belonging to different chemical classes, to identify key factors explaining groundwater contamination. Our study relied on exploitation of a French national database (ADES, cr...
Article
Full-text available
The Water Framework Directive (WFD) aims to protect and improve water quality across Europe through an integrative and multi-level water governance approach. The goal is to ensure that water quality in Europe meets good ecological status by 2027. Whilst the WFD has been hailed as a cornerstone for governance innovation in water management, most EU...
Article
Full-text available
The MétéEAU Nappes water-resource-management tool is presented. It is usable on the aquifer or part-of-aquifer scale for real-time observation of the state of the groundwater resource, and it is already operating in France. This online decision support tool is also able to predict the state of the resource in the short- and mid-terms. The paper exp...
Article
Free access until 3 June 2022: https://authors.elsevier.com/c/1evVE14Z6tlBN1 Highlights • We propose a method to identify cost-effective actions to reduce groundwater nitrate concentration. • Actions deemed promising and achievable by stakeholders can prove ineffective. • The method raises awareness on hydrosystem inertia and helps envision effect...
Article
Since the 1980s, nitrate has been shown to be present in soils and the vadose zone of various types of geological materials years after fertiliser application. In chalk where the vadose zone is thick, nitrate storage can be considerable and its transport time toward groundwater can be lengthy. In this context, evaluation of the impact of changes in...
Article
Full-text available
The FAIRWAY project reviewed approaches for protecting drinking water from nitrate and pesticide pollution. A comprehensive assessment of decision support tools (DSTs) used by farmers, advisors, water managers and policy makers across the European Union as an aid to meeting CAP objectives and targets was undertaken, encompassing paper-based guideli...
Conference Paper
Full-text available
Modelación global del transfiero de nitrato en una cuenca cárstica. Impacto de las medidas agroambientales. Alexis Gutierrez; Nicolas Surdyk. BRGM (Servicio Geológico Nacional de Francia). BP6009. 45060 Orléans Cedex 2. FRANCE Resumen La Unión Europea (UE) ha adoptado directivas que requieren que los Estados miembros tomen medidas para bajar las co...
Article
The understanding of parameters controlling mobility of trace contaminants is a key topic in a world where groundwater resources for water supply are strongly exploited and consequently greater exposed to contamination risks. In the context of wastewater reuse as water saving option for irrigation, distribution coefficients for the partitioning of...
Article
Full-text available
To fight against sanitary risks due to the use of raw or insufficiently treated wastewaters, an irrigation system combining a farm-scale decentralized wastewater treatment and an improved drip irrigation management was developed. The whole soil-water-plant system was monitored on an experimental tomato field in Crete to assess the potential element...
Article
Full-text available
In the context of artificial groundwater recharge, a reactive soil column at pilot-scale (4.5 m deep and 3 m in diameter) fed by treated wastewater was designed to evaluate soil filtration ability. Here, as a part of this project, the impact of treated wastewater filtration on soil bacterial communities and the soil's biological ability for wastewa...
Conference Paper
Full-text available
La modélisation globale des concentrations en nitrate peut être utilisée avec succès pour simuler les tendances observées et les extrapoler dans le futur. Elle est réalisée au BRGM à l’aide du modèle BICHE, basé sur la simulation globale des écoulements à l’échelle du bassin versant selon un modèle à réservoir, et sur le transport de nitrates que c...
Article
Full-text available
Solutions such as agri-environmental measures, land management, afforestation and grasslands are used to protect groundwater, especially when used for human water supply, against persistent chemical contaminants, such as nitrates and pesticides. The cost of such measures, which can be very important if considering the whole catchment area, requires...
Article
Le modèle BICHE (Bilan CHimique des Eaux), développé au BRGM, est un exemple de modèle global permettant de simuler les flux d'eau et de nitrates d'une nappe à l'échelle du bassin versant à partir de chroniques de pluie, d'ETP, de données agronomiques et de chroniques de calage (concentrations et débits ou niveaux de nappe). Une étude menée sur le...
Article
Full-text available
Une étude hydrogéologique complète, intégrant les paramètres dynamiques et qualitatif de l'état de la masse d'eau a permis de construire un modèle de transfert des nitrates des sols vers la nappe tenant compte d'une certaine variabilité spatiale des pratiques agricoles et des caractéristiques hydrogéologiques. Le modèle, une fois calibré, peut être...
Article
Water availability for irrigation is a limiting factor for agriculture in Mediterranean countries. An upcoming strategy for increasing water supply is to use treated wastewater for irrigation. A principal drawback of irrigating with wastewater is the potential heavy metal accumulation in soil and foodstuff. Accumulation of heavy metals in soil and...
Conference Paper
Full-text available
A major objective of the EU FP6 project SAFIR was to overcome certain drawbacks of wastewater reuse through the development of a new irrigation technology combining small-scale modular water treatment plants on farm level and improved irrigation hardware, in the aim to lower the risks related to low quality water and to increase water use efficienc...
Article
Calibration by inverse modelling was performed with the MACRO transport and fate model using long-term (>10 years) drainflow and isoproturon (IPU) data from western France. Two lack-of-fit (LOF) indices were used to control the inverse modelling: sum of squares (SS) and an alternative statistic called the vertical-horizontal distance integrator (VH...
Article
Full-text available
Land use changes and the intensification of agriculture since the 1950s have resulted in a deterioration of groundwater quality in many European countries. For the protection of groundwater quality, it is necessary to (1) assess the current groundwater quality status, (2) detect changes or trends in groundwater quality, (3) assess the threat of det...
Article
Key climatic factors influencing the transport of pesticides to drains and to depth were identified. Climatic characteristics such as the timing of rainfall in relation to pesticide application may be more critical than average annual temperature and rainfall. The fate of three pesticides was simulated in nine contrasting soil types for two seasons...
Article
Full-text available
A repeatable procedure for studying the effects of internal and external factors on acrylamide content in yeast-leavened wheat bread has been developed. The dough contained wheat endosperm flour with a low content of precursors for acrylamide formation (asparagine and reducing sugars), dry yeast, salt, and water. The effects of asparagine and fruct...

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Projects

Projects (2)
Project
Project title FAIRWAY: Farm systems management and governance for producing good water quality for drinking water supplies Project Goal Safe drinking water is vital for human health and the economy. Throughout the EU, diffuse pollution by nitrogen and pesticides from agriculture is one of the main obstacles to meeting drinking water quality targets. Policies to protect drinking water resources are not achieving a consistent level of implementation and effectiveness across all member states. FAIRWAY's objectives: To review approaches for the protection of drinking water resources from pollution by nitrogen and pesticides. To identify and further develop cost-effective and innovative measures and governance approaches that will protect drinking water supplies while increasing agricultural sustainability. Case Studies: FAIRWAY uses a multi-actor approach to facilitate effective cooperation between actors from different sectors and levels, including farmers, advisors, drinking water companies, scientists and policy makers. Successful practices have been identified in 13 case studies in 12 countries. The practical experience generated within the case studies are being analysed in multi-actor platforms and different thematic work packages to identify the barriers and success factors associated with achieving water quality targets. Expected results: i) recommendations for innovative measures and governance approaches to protect drinking water resources from nitrogen and pesticide pollution; ii) Scientific understanding of the relationship between agriculture and drinking water quality; iii) Identification of barriers to the practical implementation of measures; iv) Harmonized monitoring protocols and data-sets for monitoring water quality and key farming practices. v) Increased awareness and involvement of farmers and other citizens. FAIRWAY has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 727984 Coordinator contact: Gerard Velthof, Wageningen Research fairway@wur.nl Websites: www.fairway-project.eu and www.fairway-is.eu