Table 1 Number of introduced species observed in the natural evergreen forests in South Africa and their invasive status, as adapted from Geldenhuys et al. (1986) and updated with current information
From: Facilitating the recovery of natural evergreen forests in South Africa via invader plant stands
a) Species occurring only along forest margins and in large forest gaps | b) Species occurring along forest margins, in small and large gaps |
|---|---|
1) 25 tree species (for some genera, individual species were not counted): Mostly passive invaders, or just being seen. More active invaders include Acacia decurrens, A. saligna*, Albizia lophantha*, Eucalyptus spp.*, Melia azedarach, Morus alba*, Pinus spp.*, Populus spp., Psidium cattleianum & Schinus terebinthifolius 2) 28 Woody shrub and liana species: Mostly passive invaders, or just being seen. More active invaders include Acacia cyclops, Caesalpinia decapetala*, Chromolaena odorata*, Lantana camara*, Rubus niveus & Solanum mauritianum* 3) 10 Herb & soft shrub species: All passive invaders, or just being seen | 1) 14 tree species: Active invaders, only in large gaps and forest margins, include Acacia longifolia, A. mearnsii*, A. melanoxylon* & Psidium guajava* Active invaders, also under the forest canopy, include Cestrum laevigatum*, Cinnamomum camphora, Ligustrum japonicum* & Pittosporum undulatum 2) 7 Woody shrub and liana species: Mostly passive invaders. Rubus cuneifolius* is an active invader, but only in large gaps and forest margins. Dolichandra unguis-cati & Pereskia aculeata* are active invaders also on trees under the canopy 3) 1 soft shrub species: Just being seen |