M.Phil. / In order for developers to provide reasonable engineering services as well as a liveable dwelling unit within the existing housing subsidy, a substantial increase in residential density is required. Increased urban densities will decrease engineering services costs due to a greater sharing ability. This study was undertaken in order to quantify the benefits of urban densification on engineering services. The financial problems of Local Authorities in South Africa due to the entrenched culture of non-payment for services, is causing a rapid decline in the sustainability of engineering services due also to low, or non-existent maintenance. The "housing" currently delivered, its nature and continued sustainability are being severely criticized. Few differences exist between the housing currently being delivered and those provided under the previous government. Houses are provided in areas on affordable land normally far from the work place. The type of housing being constructed consists mostly of the single storey, free standing units on separate erven. These types of developments encourage urban sprawl, require very expensive engineering services and discourage the establishment of an economic public transport system. Possible solutions to the workforce/job opportunity problem include mixed land use and residential densification.

A population survey was conducted on Galago moholi along the road system at Loskop Dam Nature Reserve, Mpumalanga province, South Africa. The data were analyzed using the maximum perpendicular distance, mean perpendicular distance, and maximum reliable perpendicular distance methods. Vegetation sample plots were constructed at the location of each individual sighted in order to analyze the species’ habitat use. The results indicate that the species density of G. moholi is significantly lower at Loskop Dam Nature Reserve than previously reported at other sites within South Africa. G. moholi was found to prefer areas with high concentrations of Dichrostachys sp., Combretum sp., or Acacia sp. One individual was observed consuming vegetative matter, which may indicate that the population within the reserve is utilizing available resources in a different way than populations in other parts of southern Africa. / Department of Anthropology

Thesis (M. Town and regional planning)--Stellenbosch University , 2000. / ENGLISH ABSTRACT: An ever increasing segment of the population in the current low density category contributes to the sprawling South African city as we know it today. To provide for the housing needs o f people, precious agricultural land is being used, and the historic character o f towns is being destroyed. Densification of the city structure has been put forward as a solution to this problem. In this way, different components of the city may be connected and existing infrastructure may be optimally utilised. The concept of densification is gaining popularity in all spheres o f planning. The implementation of densification requires suitable policy, as well as the strict application of the aforesaid. A densification policy must include consultation with all parties involved with a view to finding a balance between the need for land for development purposes, the conservation of agricultural land, the conservation of the historic character o f towns and cities, as well as being in the public interest. A theoretical investigation was done in which all aspects regarding densification, and its implementation in the South African context were studied. Attention was also given to policy formulation. This was followed by an empirical study, based on the Paarl municipal region as an example, in an attempt to reconcile theory and practice. It was found that although densification enjoys great support, the perception held by professional planners as to appropriate methods for the achievement o f higher densities did not correspond wholly with theoretical arguments in this regard. It was also found that it is important to view densification in relation to the environment in which it is applied, and to create an executable policy for a specifically designated area. / AFRIKAANSE OPSOMMING: Snelgroeiende bevolkingsgetalle in ‘n lae-digtheidsmilieu dra by tot die uitgebreide Suid- Afrikaanse stad soos ons dit vandag ken. In die proses word kosbare landbougrond gebruik om in die behuisingsbehoefte van die mens te voorsien en die historiese karakter van dorpe word vernietig. As oplossing vir hierdie probleem word verdigting van die stad voorgestel, om sodoende verskillende komponente van die stad te verbind en reeds bestaande infrastruktuur tot die optimum te benut. Die konsep van verdigting geniet toenemende gewildheid in alle sfere van beplanning. Implementering van verdigting kan slegs deur die daarstelling van geskikte beleid en die toepassing daarvan geskied. By die formulering van ‘n verdigtingsbeleid moet alle rolspelers in die proses geraadpleeg word en ‘n middeweg tussen die behoefte aan grond vir ontwikkeling, die bewaring van kosbare landbougrond, die bewaring van die historiese karakter van ‘n stad en die publiek se belange gevind word. ‘n Deeglike teoretiese ondersoek is geloods, wat teoretiese aspekte omtrent verdigting en die implementering van verdigting binne die Suid-Afrikaanse konteks ondersoek het. Daar is ook aandag aan beleidsformulering gegee. Dit is opgevolg deur ‘n empiriese studie wat binne Paarl se munisipale gebied uitgevoer is en teoretiese inligting met die praktyk probeer versoen. In hierdie studie is bevind dat alhoewel verdigting van die stad groot ondersteuning geniet, die persepsie van professionele persone in die beplanningsprofessie oor metodes om hoër digthede te bereik, nie heeltemal met die voorgestelde metodes vervat in teoretiese bronne ooreenstem nie. Daar is ook bevind dat dit belangrik is om verdigting binne die konteks van die omgewing waarin dit toegepas word, te beskou en sodoende ‘n uitvoerbare beleid vir ‘n spesifieke omgewing op te stel.

This study presents an investigation into the population dynamics and social structure of a small, closed elephant population. Specifically, it examined population growth rates for evidence of density-dependent regulation. It also quantified the association patterns of female elephants groups, and male elephants groups. Social structure was examined using Hamilton’s kinship theories of inclusive fitness, and age. Male-female patterns of association were also examined for inbreeding avoidance behaviours. The study population was located in Addo Elephant National Park, South Africa. Density-dependence was assessed using a long-term data set. Densities were considerably higher than estimated carrying capacities. Population growth rate was positively correlated with increasing density. No relationship between birth rate, the age of first calving or calf sex ratio and elephant density was detected but there was a positive relationship between birth rate and rainfall during conception year. Mortality rates, particularly for juveniles, were low, and mean inter-calf interval was 3.3 years. There is no evidence of density dependent regulation in this population. These findings indicate that density dependence should not be considered as an option in the control of elephant numbers in this Park, or where elephant resources are not seasonally limited. Examination of association patterns of the adult female component revealed that associations were not random at the population, family or individual scale. This is the second study on African elephants to confirm previous behavioural studies that predicted that preferred associates were close maternal relatives. This supports many studies showing that social species preferentially associate with their kin. The adult males in this population were found to have a well differentiated society with non-random associations. Generally, males were found to have weak associations with most other males and strong associations with only a few males. This association pattern was found to be persistent over the time frame of the study, as indicated by the time lag analysis. Males returned to their natal family, even when maternally related females were in oestrus. Oestrous females directed positive behaviours towards musth males. It appears that behavioural inbreeding avoidance mechanisms in this small, closed population are inhibited: musth status seems to override inbreeding avoidance. General principles from this case study were interpreted in terms of their applicability to other small, closed populations.