| Name | 
  Role | 
  Start | 
  End | 
  | Application of the hydromorphologic quality's global assessment methodology to the walloon water bodies | 
  promotor | 
   | 
   | 
  | Biodiversity conservation, especially in NW-Europe, with emphasis on the network "Natura 2000" and the management of protected sites | 
  promotor | 
   | 
   | 
  | Taxonomy and ecogeography of lichenised and lichenicolous Fungi in Belgium, G.-D. Luxembourg and neighbouring regions, with emphasis on the ecology of the species of heavy metal rich sites, old forests and chalky soils | 
  promotor | 
   | 
   | 
  | Taxonomy and ecogeography of lichenised and lichenicolous Fungi in the Lesser Antilles, mainly Dominica and Guadeloupe | 
  promotor | 
   | 
   | 
  | Systematic, ecology and chronology of lichenized and lichenicolous fungi in Belgium and surrounding areas | 
  promotor | 
   | 
   | 
  | Herbarium LG of lichens and lichenicolous fungi | 
  promotor | 
   | 
   | 
  | Plateform of phylogenetic study of biodiversity | 
  promotor | 
   | 
   | 
  | Revision of the genus Strigula (Lichenes) in W-Europe and Macaronesia | 
  promotor | 
   | 
   | 
  | Taxonomy and ecogeography of lichenised and lichenicolous Fungi in Papua New Guinea, especially Gomphillaceae, Ectolechiaceae, Pilocarpaceae, Peltigeraceae and Strigulaceae | 
  promotor | 
   | 
   | 
  | Taxonomy and ecogeography of lichenised and lichenicolous Fungi of central Africa, especially the Kivu region of Congo-Kinshasa, Rwanda, Burundi and Cameroon | 
  promotor | 
   | 
   | 
  | Taxonomy and ecogeography of lichenized fungi of forests in tropical regions | 
  promotor | 
   | 
   | 
  | Morphological and molecular studies on the order Arthoniales, in particular on the genus Opegrapha (ARTHON) | 
  promotor | 
  2002-01-01 | 
   | 
  | Contribution to the study of lichens and lichenicolous fungi in Belgium and neighbouring areas (LICBEL) | 
  member | 
  2002-01-01 | 
   | 
  | Lichenized fungi of tropics (LICTRO) | 
  member | 
  2006-01-01 | 
   | 
  | Lichenized and non-lichenized fungi in four hot spots of subsaharian Africa: taxonomical surveys, ecogeographical and phylogenetical studies. | 
  member | 
  2006-01-01 | 
  2011-12-01 |