Now showing items 11-19 of 19
The influence of root chilling on the hydraulic characteristics of selected Eucalyptus taxa.
The hydraulic conductance of a plant is a significant factor in determining the
Resprouting and multi-stemming and the role of the persistence niche in the structure and dynamics of subtropical coastal dune forest in KwaZulu-Natal province, South Africa.
Resprouting is an important means of plant regeneration especially under conditions that do not favour regeneration through seeding such as frequent disturbances, low productivity, unfavourable soil conditions, extreme ...
Behaviour of bottlenose dolphins : inference for dolphin tourism off Durban, South Africa.
During long-term studies of dolphins, the number of individuals in the population being studied are constantly monitored using the technique of photo-identification. This constant monitoring makes use of different ...
The effect of elevated atmospheric CO2 on the growth and physiology of Chromolaena odorata.
Rising atmospheric CO2 (Ca) concentrations have generated concern among scientists, mainly because of CO2’s role as a greenhouse gas and its influence on plant growth and development. Previous research has suggested that ...
The physiology of pinus patula seedlings in response to water stress and the implications for plantation regeneration in South Africa.
Pinus patula Schiede ex Schlect. & Cham. is the most widely planted softwood species for both pulpwood and saw timber in the South African forestry industry. High mortality of this species, often in excess of 20%, following ...
Environmental stochasticity and African elephant population dynamics : investigating limitation through juvenile mortality.
The successful conservation management of African elephants depends largely on understanding the fundamental processes driving the population regulation of this species. Southern Africa’s increasing populations have raised ...
Characterization and control of micropropagation problems in aloe, devil's claw and banana.
The development of the science of micropropagation from the very initial concept of totipotency to the modern day advancement and sophistication has been affected by a wide range of problems such as hyperhydricity, ...
The spatial ecology of lion (Panthera leo) and spotted hyaena (Crocuta crocuta) in Hluhluwe-iMfolozi Park : implications for the African wild dog (Lycaon pictus.
The ecological role of apex predators in ecosystems is increasingly recognized not only as a result of their affects on prey species, but also on the numbers and behaviour of other predator species within their guilds. In ...
Warning vocalisations and predator information transfer in social birds.
Alarm or warning vocalizations are produced by many animals when they detect a potential predator. However little is known about the information contained in these vocalizations. This study investigated the warning ...