Figure 2From: Modeling the distribution of the West Nile and Rift Valley Fever vector Culex pipiens in arid and semi-arid regions of the Middle East and North AfricaMaxent Pop. Probability of Culex pipiens presence based on a species distribution model generated using maximum entropy and a set of environmental predictors (N = 9) including human population density. Habitat suitability has been converted to probability of presence, assuming a prevalence of 0.5. Bottom: Enlarged to show population centers.Back to article page