Big Picture 2002 Geographic Information (recommended)

The Big Picture, 2002 is a geographic information system (GIS)-based landscape analysis and is a partnership between the Nature Conservancy of Canada and the Ministry of Natural Resources (Natural Heritage Information Centre). Numerous digital layers covering southern Ontario plus a portion of the Canadian Shield were compiled for this analysis. These layers included evaluated wetlands, forest cover, old growth forest, rare species and communities, waterbodies and watercourses, parks and protected areas, Areas of Natural and Scientific Interest (ANSIs) and others. The data layers were overlain in a GIS system and points assigned to the features in each layer according to their conservation value. Core natural areas were identified by a combination of minimum size and a minimum point score per pixel. Potential linkages between these cores were computed by assigning scores to the landscape surrounding the cores based on the probable resistance to wildlife movement.