Special groups of interest are Poaceae, Cyperaceae and certain succulent families such as Cactaceae and Agavaceae. I am particularly interested in Far Eastern Artemisia sect. Artemisia, an exceedingly complex assemblage of morphologically similar species, several of which showing incipient invasive behavior in Europe.
I have written numerous scientific publications in national and international, peer-reviewed journals (see publication list). I compiled an extensive catalogue of all non-native vascular plants recorded in Belgium since 1800 and wrote a detailed account of recently naturalized plants in Flanders. Since 2006 I have been working on a website that gathers all information that is available on alien plants in Belgium (http://alienplantsbelgium.be). This work in progress also includes a thoroughly illustrated online guide for the identification of all non-native vascular plants in Belgium. I am also co-author of the Belgian Flora ("Nouvelle Flore de la Belgique (...)", Lambinon & Verloove 2012) and am working on a completely revised and updated Belgian flora with my co-author Fabienne Van Rossum.
I am a member of the editorial board of the scientific journals Bouteloua, Management of Biological Invasions, Ukrainian Botanical Journal and Dumortiera. I did peer reviews for several different international scientific journals (including Candollea, Collectanea Botanica, Serbian Journal of Botany, Willdenowia, Feddes Repertorium, Nordic Journal of Botany, Acta Botanica Gallica, Plant Ecology and Evolution, etc.). I am curator for Belgium of Q-bank, Comprehensive Databases On Quarantine Plant Pests and Diseases (now integrated in EPPO, European and Mediterranean Plant Protection Organization).
Publications: see ResearchGate and FRIS.