• 2003 dr. in Sciences - Ghent University. Title: Studies in opal phytoliths. Methods and identification criteria. Promotors: Prof. Dr. A. Gautier and M. De Dapper.
• 2001 Physical environment and development Prof. dr. M. De Dapper – Ghent University. Doctoraatsopleiding in de Wetenschappen Ghent University.
• 1999 Guidelines for Soil Thin Section description. (International Training Centre for Post-Graduate Soil Scientist. Prof. Dr. G. Stoops - Ghent University).
• 1996 Quaternary palynology of the intertropical regions Prof. dr. E. Roche – Université de Liège Quaternary palynology of the Mediterranean regions dr. F. Damblon – Belgian Royal Institute of Nature Sciences Diatoms dr. C. Cornet-FUNP, Facultés Universitaires Notre Dame de Namur
• 1994 Plant ecology and tropical systematic Prof. dr. Lejoly – Free University of Brussels
• 1992 Soils as a source of information about the (paleo)environment Prof. dr. R. Langhor – Ghent University
• 1989 International Certificate in African Archaeology Project Erasmus Special Degree in African Civilisation Free University of Brussels
• 1987 Degree in Philosophy of sciences opt. biology Free University of Brussels
• 2006– in run Chairman of the International Committee for Phytolih Nomenclature
• 2003 – in run Scientific collaborator of the Belgian Royal Institute for Nature Sciences.
• 2000 - 2005 Phytolith specialist associated to the GIEP - ULB (Groupe d’Etudes Interdisciplinaires du Paléoenvironnement - ULB)
• 1996 Phytolith specialist of the UIAP 28 detached to the Zoological Department of the RMCA (project responsible: dr. W. Van Neer).
• 1995 – 2005 Scientific collaborator of the RMCA
• 1991-1994 Phytolith specialist associated to the Palynological Laboratory of the RMCA (head: Prof. dr. E. Roche)
• 1990 – 1991 Archaeological and prehistoric section Royal Museum of Central Africa (RMCA) (head: Prof aggr. dr. J. Moeyersons)
• 2008 Member of the Scientific Committee of the 7th International Meeting on Phytolith Research – Mar del Plata, Argentina decembre 10th-14th.
In collaboration with E. De Langhe (Lab of Tropical Crop Improvement – KUL) and T. Denham (Monash University., Australia) organisation of a session of the 6th World Archaeological Congress entitled: “Banana: the neglected history”. (Dublin, Ireland. June 29th – 4th July).
• 2007 – in run President elected of the Society for Phytolith Research
• 2006 Founding president of the Research Team in Archaeo- and Palaeosciences.
• 2004 Member of the Scientific Committee of the 5th International Meeting on Phytolith Research – Moscow, Russia. October 13th-16th, 2004.
Member of the EARTH program (Early Agricultural Remnants and Technical Heritage). The dynamics of non-industrial agriculture 8,000 years of resilience and innovation. Co-chairs: Anderson, P.C. (CEPAM - CNRS – France) and Given, M. (Dept. of Archaeology - University of Glasgow, Scotland). A Scientific Program of the European Science Foundation.
• 2003 In collaboration with T. Denham (Flinders University. Adelaide, Australie) and J. Irarté (University of Kentucky, Lexington, USA) organisation of a session of the 5th World Archaeological Congress entitled: “Inherited Models and the Denial of Prehistory: Challenging Existing Concepts of Agriculture”. (Washington DC, USA. June 21th – 26th).
• 2001-2004 1st non American member of the Society for Phytolith Research board
Member of the organisation Committee of the 4rth International Meeting on Phytolith Research)
• 2000 President of the organisation Committee of the 3rd International Meeting on Phytolith Research)
• 1990 Laureate of the ‘Concours des Bourses de Voyage de la Communauté Française de Belgique’
• 2006 El Khidr, Failaka Island (Kuweit). The Failaka Kuweit Slovak Archaeological Mission (Head: L. Benedikova, Slovak Academy of Sciences).
• 1999 Tel Yarmouth, Israel (Archaeology - head: Prof. dr. P. de Miroschedji, CNRS).
• 1995 Akhtamir, Voskevaz. Armenia (Archaeology - head: dr. H. Gasche - UG).
• 1993 IRD (ex ORSTOM) South-west Cameroon. (Palaeoenvironment - head: dr. J. Maley).
• 1992 Soleto, Lecce. Italy. (Archaeology - head: dr. T. Van Coppernolle - CNRS).
• 1991-1992 Campaigns of the CEDARC, Belgium
• since 1991 Archaeological and Pedological prospections. Belgium
• Journal of Archaeological Sciences
• Plant Genetic Ressources
• The Phytolitarian
microscopy - transdisciplinarity