The role of geographic information systems in pest risk analysis
2001
Baker, R. (Central Science Laboratory, Sand Hutton, York (United Kingdom))
Pest risk analyses (PRAs) are conducted to assess and manage the risks posed by alien pests. Many of the datasets used in PRA contain data with a spatial reference. This makes it possible to place the data on a map to assist analysis. For example, when assessing whether a pest can enter and establish in a new area, the current distribution of the pest is taken into account and the extent to which the new area contains suitable host plants, climate and the other key factors for successful colonisation is also considered. When evaluating the impacts that might be caused to crops and the environment if establishment occurs, the location and value of vulnerable crops need to be estimated, in order to highlight the areas at greatest risk. If outbreaks occur, mapping crop location and the other key factors which may influence the spread of the pest and its management may greatly enhance the prospects for eradication. This presentation will show how mapping and analysing these datasets with computer mapping software, Geographic Information Systems (GIS), can assist throughout the pest risk analysis process and help communicate the results to those who take decisions.
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