Savanna
trees over 5 metres are uprooted completely.
Exotic plant species
A number of exotic plants species have been introduced
to the savannas around the world. Amongst the woody
plant species are serious environmental weeds such as
Prickly Acacia (Acacia nilotica), Rubbervine
(Cryptostegia grandiflora), Mesquite (Prosopis spp.),
Lantana (Lantana camara and L. montevidensis) and
Prickly Pear (Opuntia spp.) A range of herbaceous
species have also been introduced to these woodlands,
either deliberately or accidentally including Rhodes grass
and other Chloris species, Buffel grass (Cenchrus
annaabi.ee 
