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This dataset represents an approximate index of sudden oak death (Phytophthora ramorum) infestation based on the amount of area in 1/4 mile buffer around all confirmations (as of 6/5/2008) that is contained within roughly 1,067 hectare hexagons. Infestations are confirmed by pathologists from U.C. Davis, U.C. Berkeley, and California Department of Forestry. This dataset likely underestimates the real amount of sudden oak death present in California because the underlying data represent only confirmed samples (not all areas have been sampled). The data used to create this dataset were obtained by the Conservation Biology Institute (CBI) from the Sudden Oak Death Project (Geospatial Imaging and Informatics Facility)...
    map background search result map search result map Phytophthora ramorum (Sudden Oak Death Infestation Areas in California) USGS 1:62500-scale Quadrangle for Quarantine, LA 1892 USGS 1:62500-scale Quadrangle for Quarantine, LA 1892 USGS 1:62500-scale Quadrangle for Quarantine, LA 1892 USGS 1:62500-scale Quadrangle for Quarantine, LA 1892 USGS 1:62500-scale Quadrangle for Quarantine, LA 1892 USGS 1:62500-scale Quadrangle for Quarantine, LA 1892 Phytophthora ramorum (Sudden Oak Death Infestation Areas in California)