Mediterranean terrestrial biodiversity ;
Vascular plants ;
Orchids / Orchidinae ;
Amaryllidaceae / Allium ;
Asparagaceae / Hyacinthoideae ;
Pteridophyta ;
flora of France ;
flora of Algeria and Tunisia ;
flora of northern Iraq ;
Pomatiidae (snails).
Research profile :
https://scholar.google.fr/citations?user=WH-DIWAAAAAJ&hl=fr
https://www.researchgate.net/profile/Errol-Vela