- Global Invasive Species Database
http://www.issg.org/database/welcome/
- Invasive and Noxious Plants Database
http://plants.usda.gov/cgi_bin/topics.cgi?earl=noxious.cgi
- Weeds Australia
http://www.weeds.org.au
- Hawaïan Ecosystems at Risk Project (HEAR)
http://www.hear.org
- Organisme : Center for aquatic and invasive plants
http://aquat1.ifas.ufl.edu/welcome.html
- Invaders Database System
http://invader.dbs.umt.edu
- Portail américain
http://www.invasivespecies.gov/databases/apdb.shtml
- Forum des Marais Atlantiques
www.forum-marais-atl.com
 Oponces ou Figuiers de Barbarie (Opuntia spp.). |