In June and July 1978, 584 agonistic encounters of Oryx gazella were recorded in Etosha National Park. Generally, the fighting techniques and the displays were the same as in Oryx beisa (Walther 1958, 1978a); however, a particular display, the ""symbolic stab over the shoulder"", seemed to be unique in Oryx gazella. AIl the lights were horn-to-horn contacts. Body attacks were rare. Among adult bulls, one-sided displays decided many of the encounters.
Klipspringer, Oreotrogus oreotragus, were observed for 17 months (1976-78) in the Kuiseb River Canyon of the Namib Desert. The typical social group is a monogamously mated adult pair and one to two offspring. Daily activities of the Family group are highly synchronised, and individuals maintain spatial proximity throughout the day. Adult females initiate and Iead most group travel, including flight from potential danger.
In the vicinity of Gobabeb both north and south of the Kuiseb River, well developed vegetation polygons have been noted. Previous workers have concentrated their efforts on the patterned ground features in the interdune valleys south of the Kuiseb. Two other areas of patterned ground development are descriptionbed and it is proposed that all three types are genetically similar. Desiccation of gypsum rich sediments in the soil horizons and / or the partially weathered bedrock horizon appears to have produced the polygonal fissure networks.
The withdrawal of water from the lower Kuiseb River for mining and industrial purposes may influence the vegetation along the river. The maintenance of this vegetation is not only essential to the Kuiseb River ecosystem as a whole, but the vegetation acts as a barrier checking the northwards movement of the Namib dune-sea. Physiognomic-structural areas were distinguished on aerial photographs and these areas were investigated in the field for homogeneity and woody species composition.
As an adjunct to a study on the ecology of water-pools in the Kuiseb River Canyon of South West Africa we noted the presence of a small, and perhaps resident, storks population of black storks, Ciconia nigra, wading in pools that were being monitored on a monthly basis.