Fig. 4
From: Modelling the persistence of mosquito vectors of malaria in Burkina Faso
The effect of proximity to a persistent population and the local density of settlements on settlement status. With dispersal d = 10−5 (and aestivation, migration, and small permanent larval habitat all turned off), the model predicts that 25% of settlements are regularly colonised in the wet season (red), and 31% are not (blue). The x-axis plots distance to the nearest of the remaining 44% of sites that are permanently occupied (even with no dispersal), and the y-axis plots the total number of sites within 10 km from the focal site