See the home page of this site.
Modelling water flow and pesticide fate in soils;
Estimating the risks of diffuse pesticide losses at the regional scale;
Programming techniques (R) for data management and analysis, including geographical datasets;
See also this description of my current "research and development" and teaching activities.
01/2011 - Now: Research Engineer at SLU (Uppsala), department of Soil and Environment, Biogeophysics and water quality division. Building tools and geographic datasets for regional scale modelling of pesticide leaching risks (MACRO-SE). Work financed by the Centre for Chemical Pesticides (CKB), at SLU. With Pr. Nick Jarvis.
01/2009 - 01/2011: Postdoc at SLU (Uppsala), department of Soil and Environment, Biogeophysics and water quality division. Building tools for regional scale modelling of pesticide leaching risks (MACRO-SE). Work financed by the Centre for Chemical Pesticides (CKB), at SLU. With Pr. Nick Jarvis.
01/2008 - 01/2009: Postdoc at SLU (Uppsala), department of Soil and Environment, Biogeophysics and water quality division. FOOTPRINT EU FP6 project. Validation of FOOTPRINT sets of pedotransfer functions for water and solute transport in soils. With Pr. Nick Jarvis.
09/2003 - 12/2007: Ph.D. student at AgroParisTech (Grignon, France), department of Environment and Arable Crops (EGC) (INRA / AgroParisTech joint research unit). "Spatial variability and agro-pedological determinisms of an herbicide fate in the surface horizon : an application to isoproturon in an agricultural catchment of the Beauce chartraine region, France". With Pr. Yves Coquet.
2003 - 2007. ESHEL project (during my PhD). "Charactersing the risk of contamination of the Beauce aquifer by pesticides. Understanding the mechanisms of transport by preferential flow and risk analysis at the watershed scale". Project led by Pr. Yves Coquet (AgroParisTech).
2013 - 2016. PERFORM. "Modelling approaches to evaluate and compare the environmental performance of innovative cropping systems designed to pesticide usage: spatio-temporal integration and treatment of uncertainties". Project led by Laure Mamy (EGC, INRA) and funded by ONEMA and the French Ministry of Agriculture Agrifood and Forestry, in the context of its Écophyto program.
See my publication list on this page.
Teaches some computer based modelling exercises for Soil science for water and environment (MV0192), since 2011.
Teaches some computer based modelling exercises for Water and solute transport in the soil-plant-system (MV0198), since 2010.
Practical field-exercise on soil profile description. Two times 3 hours, 2005 and 2006. Fisrt year students of Cergy-Pontoise College of International Agro-Development (ISTOM).
R programming language for statistical computing:
Web development: I have a small experience in PHP, HTML and CSS programming (see my project ssld). I have recently started using the site generator Jekyll. See also the paragraph on content management systems below.
I have some basic knowledge on how to install and maintain a Linux (Ubuntu) web-server and how to write bash scripts for automatic tasks (including cron tasks). I have maintained the web server of the French Soil Science Association for more than three years (see below).
Content Management Systems (CMS): I now use Jekyll site generator (not a CMS, but contrary to most CMS, Jekyll websites do not require time consuming security upgrades), but I have used several content management systems, like DokuWiki (wiki system), Piwigo (picture galleries), and Spip, and tested quite a few others.
Creator & maintainer of the R package easylegend (on GitHub), a package for generating plot aesthetics and legends for categorical and continuous data, with a focus on variables spanning across several orders of magnitudes (such as maps of pesticide concentrations), that require custom, non-linear legends.
Creator & maintainer of the R package soiltexture ("The Soil Texture Wizard"; on CRAN), a package for plotting soil texture triangle and classifying soil texture data, providing 16 texture classification systems from around the world. See also this gallery of texture triangles.
Creator & maintainer of the R packages soilwaterfun and soilwaterptf (on r-forge) implementing commonly used functions for soil water retention, soil hydraulic conductivity and some pedotransfer functions for parametrising them from easily available soil properties.
Creator & maintainer of the project easydb ("Easy database interface"), a collection of R packages making it easier to read and write data from various database system (MySQL, SQLite, MS Access and MS Excel). It is build on lower level R packages RODBC, DBI and RSQlite;
Creator & maintainer of the R package macroutils,
a collection of utility functions for the pesticide fate model
macroutils provides functions for importing and
exporting MACRO binary input/output data files, for visualising
their content and for converting them.
simple text-based interfaces for fast and efficient
Creator of a geographical directory of soil science research groups around the world (ssld). Geo-reference more than 350 groups in 67 countries. Not maintained any longer.
See also this page on my software development.
Between 2011 and 2013 (and a a bit before that) I was webmaster and member of the board of the French Soil Science Association (AFES).
Between 2012 and 2014 I was member of the board of the Uppsala-based association Families for International Friendship (FIF). This non-political and non-relegious association (founded in 1965) organises cultural and social activities for Uppsala foreign students and researchers, and aims at broadening mutual cultural understanding.