Weed surveillance strategies using models of weed dispersal in landscapes

Once an incursion of a serious weed is detected, it is important to map its potential extent and undertake surveillance as part of early planning for eradication or containment. This paper describes landscape models for seed generation and seed dispersal from wind and water transport. Integrated models provide predictive maps of potential outbreaks from which an optimal search route is derived. The models answer questions on the most effective survey method for weed detection. The landscape models and optimal search are implemented in GIS to provide decision support tools to environmental managers.