Schematic representation of the main vegetation associations across the topographic gradients represented by the transects in Figure 2. The altitude (y-axis) has been exaggerated for visualisation purposes, i.e. is not to scale. (a) Transect 1 from SW to NE. (b) Detail of the last 30 km of transect 1 (NE point), to show details regarding the mosaicking of vegetation associations around the Omuramba Ovambo. (c) Transect 2 from SE to NW. Note the Hoab Valley (ca 60 km from the start of the transect) is completely cleared and tilled for crop production, thus no associations are indicated there.