Table 13.2
(continued)
Biome
Fire regime
Examples of invasive taxa
Whose spread is promoted by
fire That are resistant to
fire
That are excluded by
fire
Savanna Regular
fires at intervals of 2–
5 years in the dry winter
months. Fires are more frequent
in areas with higher and more
regular rainfall, while at more
arid sites there is a large interannual variation in rainfall, and
fires are less frequent (van
Wilgen et al. 2004). Fire intensities of up to 21,000 kW m
À1
measured in experimental
fires;
intensities in wildfires can be
considerably higher (Govender
et al. 2006).
High-intensity
fires can be used to
retard invasion by
Chromolaena odorata
(te Beest et al. 2012).
372
J. R. Wilson et al.