Fig. 1
Location of 62 survey sites across the full range of marri (C. calophylla) in southwest Western Australia. Dots indicate the proportion of canker incidence at each site (trees: n = 50) and if pathogenic Phytophthora spp. were present. The line indicates the inland boundary of the marri range. The different shades of grey across the range are the indicative probability of marri trees being infected by canker disease based on the multivariate (quasibinomial) logistic regression model including average annual rainfall and temperature (i.e. Canker probability = Exp (0.8798 + (0.002721 × annual average rainfall 1951–1980) + (−0.2627 × annual average temperature 1951–1980)) / (1 + (Exp(0.8798 + (0.002721 × annual average rainfall 1951–1980) + (−0.2627 × annual average temperature 1951–1980)))); R 2 = 0.40). Map based on 30-year average climate raster files with 5 × 5 km pixels