We present a new stage-structured model activated in Excel to project potential impacts of grazing and rainfall (drought) over up to 500 years on population numbers of trees and shrubs in the Australian chenopod rangelands. The model is based on functional types rather than species so that it can be used on any species of tree or shrub, and includes the effects of grazing pressure of four herbivore species: sheep, rabbits, goats or kangaroos. Rainfall (either modelled or real rainfall records) is then included as another variable. The model can be set to run in stages with different herbivore intensities to model the effects of management interventions such as spelling of paddocks and control of feral herbivores. Users may also create various climate-change scenarios by editing the rainfall file.
Renmark, South Australia
ISSN 1323 660
Full-text publications from the Australian Rangelands Society (ARS) Biennial Conference Proceedings (1997-), Rangeland Journal (ARS/CSIRO; 1976-), plus videos and other resources about the rangelands of Australia.