When carrying out our research work on the Quaternary landform evolution of the CentraI River, South West Africa Namib Desert 1972, we visited the middle part of Kuiseb river between Hudaob and Gobabeb. 1). From Hudaob downstream to its delta at Walvis Bay the river separates the Dune Namib in the south from the Namib flats in the north.
Experiments were carried out to determine the effects of removal of the cuticle on loss af water from the leaves of Welwitschia mirabilis, a longlived gymnosperm-like vascular plant endemic to the Namib Desert.
The very noticeable decIine of the Jackass Penguin Spheniscus demersus (Linnaeusj on the Southern African coastline is a cause for serious concern. For this reason a census of the total penguin population was undertaken on Halifax lsland near Luderitz, South West Africa.
The occurrence of the bream Tilapia mossambica Peters from pools in the Namib Desert is documented. The aquatic vertebrates Cyprinus carpio, Barbus anoplus, Hepsetia breviceps and Pyxicephalus delalandei are also listed. The origin and dispersal of T. mossambica stock in South West Africa is discussed. Amongst established freshwater fish populations many individuals show signs of malnutrition.