A mesoscale (100 to 1,000,000 ha) study was conducted on three Southern National Forests (Homochitto MS, Kisatchie LA, and Bankhead AL) to evaluate the impact of Dendroctonus frontalis (SPB) outbreaks on the habitat of common wildlife species. Tabular data on stand conditions for the National Forests was obtained from the Forest Inventory and Analysis Database (FIAD). Data for the SPB outbreaks was taken from the Southern Pine Beetle Information System (SPBIS). Both databases are maintained by the USDA Forests Service. Forest growth subsequent to SPB outbreaks was simulated using the Forest Vegetation Simulator (FVS) and results were visualized using the Stand Visualization System (SVS). Habitat Suitability Indices (HSI) published by US Fish and Wildlife Service were used to evaluate the impacted habitats. We found that SPB herbivory perforates, dissects, and fragments the forest landscape destroying and creating critical habitat needed by the wildlife species. The degree of impact is a function of the size and duration of the outbreak, which varied for each National Forest