Fig 6.

Observed pre- and post-war aerial survey data (red points) plotted against logistic-growth curves for (a) waterbuck and, (b) hartebeest. Vertical axes (number of individuals per km² surveyed) intersects horizontal axes (year) in 1994, coinciding with the first post-war survey. For waterbuck, logistic curves are plotted using an intermediate K estimate (red line) along with plausible upper- and lower-bound K estimates (green lines and shaded interval). For hartebeest, logistic curves are plotted using the observed initial post-war density estimate (red line) ± 50% (blue lines and shaded interval), assuming the intermediate K value.