Modelling climatic change impacts on sleeper and alert weeds.
Changes in climate will also change the status of existing and potential weeds depending on where they are found in Australia. Two examples are presented showing the predicted distributions of alert species, Acacia catechu and Cynoglossum creticum, threats to northern and southern Australia respectively. Models forecasting the suitability for the plant's growth under two climate predictions for 2070 were generated by using CLIMEX with OzClim overlays. Acacia catechu shows the potential for considerable southern spread following climate change, while C. creticum retracts further to the south, but with a higher level of potential threat on the southern coast of Victoria. In both cases the models indicate a considerable change in the regions most threatened by the weeds.