Browse Results

Showing results 162041 to 162050 of 165390

  1. Phosphorous uptake rate in two low phosphorous updated species, Aspalathus linearis and Podalyria calyptrata
    Basic, Dunja, 2017-08-08T06:48:47Z, University of Cape Town
    Due to the low P nature of soils within the fynbos biome of the Cape Floristic Region, plants have developed numerous mechanisms which enable them to better acquire phosphorous. A number of species have been reported to have specialised root morphologies (root clusters, mycorrhizae) that enhance P u ...
  2. Nipping the bud hypothesis : a comparison of savannah and forest tree responses to canopy scorch
    Beckett, Heath, 2017-08-08T06:48:54Z, University of Cape Town
    Tree mortality, following surfaces fires, is much greater in forests than in savannas, despite similarities in the bark thickness of tree trunks. This difference is thought to influence the distributions of forest and savanna biomes. There is no consensus and very little research on how fires actual ...
  3. The evolution of the Afrotemperate-endemic genus Macowania (Asteraceae) in the Drakensberg region of South Africa
    Bentley, Joanne, 2017-08-08T06:48:58Z, University of Cape Town
    The cosmopolitan Asteraceae tribe Gnaphalieae, or paper daisies or everlastings, form a significant component of both the dry and cool temperate floras of southern Africa. Within this tribe exists a small Afrotemperate genus, Macowania, endemic to the grassland biome of South Africa and occurring al ...
  4. A preliminary study of Gelidium capense in culture
    Bentley, Joanne, 2017-08-08T06:49:02Z, University of Cape Town
    Some preliminary investigations of the effects of temperature, light intensity, salinity and to a lesser extent, water movement, were performed under controlled laboratory culture conditions on the subtidal red alga Gelidium capense, with regards to its potential for aquaculture for its use in the a ...
  5. Princess Vlei : what diatoms can tell us about spatial and temporal heterogeneity in an urban wetland
    Cowan, Oliver, 2017-08-08T06:49:03Z, University of Cape Town
    Globally, wetlands are being degraded and destroyed largely as a result of anthropogenic activity. Monitoring and assessment are required to maintain functional ecosystems and the valuable services they provide. Surface sediment cores were taken from 4 points around an urban wetland (Princess Vlei) ...
  6. Co-occurrence and phenological niche separation in rodent pollinated Proteaceae
    Cowan, Oliver, 2017-08-08T06:49:07Z, University of Cape Town
    Despite the numerous studies regarding rodent pollination in the Cape Floristic Region in the last few decades, little or no work has been done on patterns of co-occurrence and flowering phenology. The presence of three potentially rodent-pollinated Protea species at Fernkloof Nature Reserve, two of ...
  7. The burning questions about Hluhluwe : causes and consequences of a severe wildfire
    Browne, Catherine, 2017-08-08T06:49:08Z, University of Cape Town
    The biophysical drivers of fire; ignition, fire weather conditions, fuel biomass, and flammability, differ in varying ecosystems. The rates of occurrence of these factors influence fire regimes. This study investigated the causes and consequences of a severe wildfire that swept through the Hluhluwe ...
  8. A principled engagement?: non-collaboration and the Teachers" League of South Africa in the Western Cape, 1990-2003
    Hendricks, Paul Ross, 2017-08-08T06:49:42Z, University of Cape Town
    This thesis investigates the Teachers" League of South Africa"s (TLSA, League or Teachers" League) ideas and practice of non-collaboration. It seeks to ascertain whether these ideas and practices continued after the organisation merged with several public sector unions in the National Union of Publi ...
  9. Data acquisition system for pilot mill
    Molepo, Isaih Kgabe, 2017-08-08T05:58:25Z
    This dissertation describes the development, design, implementation and evaluation of a data acquisition system, with the main aim of using it for data collection on a laboratory pilot ball mill. An open-source prototype hardware platform was utilised in the implementation of the data acquisition ...
  10. The management and preservation of indigenous knowledge in Dlangubo village in Kwazulu-Natal, South Africa
    Zimu-Biyela, Acquinatta Nomusa, 2017-08-08T09:37:54Z
    The objectives of this study were to establish various practices of indigenous knowledge (IK) commonly used in the Dlangubo village, and methods and tools used in managing IK; to determine ownership protocols and what they know about the South African (SA) intellectual property (IP) laws; to expl ...