Impacts of invasion of island rain
forest by the yellow crazy ant, Anoplolepis
gracilipes. (a) Uninvaded site (Winifred Track)
with open understorey maintained largely by
the foraging activities of the red land crab,
Gecarcoidea natalis. (b) Invaded site (Dales)
1–2 years after ant invasion with a dense and
diverse seedling cover and thick litter layer.
Photographs by Peter Green.