Search
Now showing items 21-30 of 33
Rehabilitation as a method of understanding vegetation change in Paulshoek, Namaqualand
(University of the Western Cape, 2005)
Heavy grazing of rangelands in the succulent karoo has placed the biodiversity of these areas at risk. In Paulshoek, overgrazing has resulted in the removal of much of the palatable vegetation from low lying areas. The ...
Monitoring of heavy metals in the Bottelary River using Typha capensis and Phragmites australis
(University of the Western Cape, 2005)
The aim of this study was to use plants to determine the degree of heavy metal contamination in water and sediments in order to effectively monitor and provide possible recommendation to improve the water quality in the ...
Species-level phylogenetic reconstruction of the African cycad genus Encephalartos (Zamiaceae)
(University of the Western Cape, 2007)
This thesis explores species-level phylogenetic relationships of the African cycad genus
Encephalartos, which is one of the eleven genera of cycads. The genus is confined to
Africa and comprises approximately 65 species, ...
Chytridiomycosis in amphibian populations in the Western Cape, South Africa
(University of the Western Cape, 2002)
There have been many cases reported of amphibian populations declining. These are often due to anthropogenic factors such as habitat destruction and pollution. However, some declines have not had an obvious cause and many ...
The distribution of the desert rain frog ( Breviceps macrops) in South Africa
(University of the Western Cape, 2009)
The desert rain frog (Breviceps macrops) is an arid adapted anuran found on the west coast of southern Africa occurring within the Sandveld of the Succulent Karoo Biome. It is associated with white aeolian sand deposits, ...
Specias delimitation and assessment of genetic variability in Carpobrotus (Alzoaceae): evidence from amplified fragment length polymorphisms
(University of the Western Cape, 2004)
Species of Carpobrotus (Aizoaceae: Ruschioideae) are widely spread throughout South Africa and are commonly used for their medicinal properties. The genus consists of 13 species of which seven occur in South Africa, five ...
Genetic analysis of resistance to powdery mildew (podosphaeara leucotricha) in apple (Malus x dornestica Borkh.)
(University of the Western Cape, 2008)
Apple powdery mildew, caused by Podosphaera leucotricha, is one of the major diseases
of the cultivated apple in the Western Cape, causing severe losses in yield and affecting
fruit quality. This affects the deciduous ...
Studies of foraminifera associated with gelidium pristoides (turner) keutzing (gelidiales: rhodophyta)
(University of the Western Cape, 2002)
Our understanding of the macrofauna of hard intertidal substrata around South
Africa is fairly comprehensive, and we have a good understanding of the environmental
factors responsible for structuring macrofaunal communities ...
The effect of copper on the growth, development and chemical composition of some dryland wheat cultivars
(University of the Western Cape, 2005)
Heavy metal accumulation in arable land as a result of mining activities, pesticides and fertilisers has become a global concern. Steinkopf and Concordia in the Northern Cape are well-known for subsistence farming, but ...
Re-descriptions of some southern African Scyphozoa: out with the old and in with the new
(University of the Western Cape, 2009)
Two species of Chrysaora are described from the northern Benguela ecosystem: C. fulgida and C. africana. These species can be diagnosed by a combination of morphological features including lappet and tentacle number, shape ...