Thesis (MTech. degree in Nature Conservation ) - Tshwane University of Technology, 2007. / The tendency for male and female buffaloes to live separately outside the breeding season is termed sexual segregation. A number of hypotheses have being proposed to explain this behavior. This study, in an area with an intact predator community, strongly support the predation-risk hypothesis and attempts to clarify the function of sexual segregation in buffalo in southern Africa. It also contributes to understanding the possible consequences of selective removal of males for hunting or culling purposes.

Thesis (M.Sc.(Zoology))--University of Pretoria, 2000. / Abstract in English. Includes bibliographical references.

The objective of this project is to link the statistical theory used in the ecological sciences with an actual project that was developed for the South African National Parks Scientific Services. It investigates the changes that have occurred in the herbaceous and woody structure due to the closure of artificial waterpoints; including the impacts that elephants and other herbivores have on the vegetation of the Kruger National Park. This project was designed in conjunction with South African National Parks (SANP) Scientific Services and it is a registered project with this department. The results of this project will be submitted to Scientific Services in accordance with the terms and conditions of a SANP research project. A major concern within the KNP is the declining numbers of rare antelope and numerous projects have been developed to investigate possible ways of halting this decline and thus protecting the heterogeneity of the Kruger National Park. Three different datasets were investigated, covering three aspects of vegetation structure and composition within the KNP. The first investigated the changes that have occurred since the N'washitsumbe enclosure in the Far Northern KNP was fenced off from the rest of the park. The results show that over the 40 years since the enclosure was built, changes have occurred which have resulted in a significant difference in the abundance of Increaser 2 and Decreaser grass species between the inside and the outside of the enclosure. Increaser 2 and Decreaser categories are the result of a grass species classification depending on whether the species thrives or is depressed by heavy grazing. The difference in grass species composition and structure between the inside and the outside of the enclosure indicates that the grazing animals within the KNP have influenced the grass composition in a way that favours the dominant animals. This has resulted in a declining roan antelope population - one of the species that is considered as a 'rare antelope'. Many artificial waterpoints (boreholes and dams) have also been closed throughout the KNP in the hope of resulting in a change in vegetation structure and composition in favour of the roan. Veld condition assessment data for 87 boreholes throughout the Park was analyzed to determine whether the veld in the vicinity is beginning to change towards a more Decreaser dominated sward which would favour the roan. The results were analyzed for the different regions of the Park; and they indicate that changes are becoming evident; however, the results are not particularly conclusive, yet. The majority of the boreholes were closed between 1994 and 1998 which means that not a lot of data were available to be analyzed. A similar study conducted in another 10 years time might reveal more meaningful results. However the results are moving in the direction hoped for by the management of the KNP. The results show that the grass composition has a higher proportion of Decreaser grasses since the closure of the waterpoints, and the grass biomass around these areas has also improved. The results were analyzed on an individual basis; and then on a regional basis as the minimal data meant that the individual analyses did not provide any significant results. A third study was then done on the impact that the rapidly increasing elephant population on the vegetation within the Riparian zone along three rivers in the Far Northern region of the KNP. The riparian zone is an important part of the landscape, in terms of providing food for many animals as well as shade. The elephant population has increased substantially since the termination of the culling program and this means that the feeding requirements of the population has increased which could result in severe damage upon the vegetation, as elephants can be very destructive feeders. The results show surprising differences between the three years of data that were analyzed; however the results indicate that the elephants are targeting specific height ranges of trees when feeding; however they do not seem to consistently target specific tree species. This is positive for the diversity of the Riparian zone as this region is very important both ecologically and aesthetically for the tourists who visit the Park.

M.Ed. / Wildlife areas are considered by many to be "wilderness" islands, which do not have anything to do with the local communities surrounding them. These areas are seen as elitist. The Kruger National Park is no exception to these thoughts. Due to its immense size, many neighbours of the park have over the years been ignored. A questionnaire was given to 127 of the neighbours along the southern boundary of the park to determine the environmental literacy of these neighbours. The neighbours sampled were from informal and formal settlements and tourist destinations such as lodges and hotels. From the results it was found that there was very little difference between these neighbours in terms of their environmental literacy. An environmental education model was proposed in order to address the lack of knowledge or misconceptions that the neighbours held about the environment.

MESHWR / Department of Hydrology and Water Resources / See the attached abstract below

The need for the study was prompted by discussions with my fellow photographers and friends that fewer people visited the Kruger National Park the last few years. Various reasons were given for it. I discussed it with Professors G. Puth and A. N. Schreuder, and members of the National Parks Board. Initially it was decided that a study should be done of why there was a decrease in the demand for accommodation in the Park, and how it could possibly be improved. Mr. P. Fearnhead and Professor A. N. Schreuder suggested that it would be better if a price sensitivity study should be done with a new computer program, namely conjoint analysis. This type of study has not been done in South Africa before. One of the major purposes of a conjoint analysis is to measure consumer preferences among competitive products and services. Basically it measures preferences of tourists by making trade-offs between five attributes and seventeen levels, and that consumers make complex decisions not on one factor alone but on several factors "jointly". Thus it was named conjoint analysis. Ranking a number of different combinations of attribute levels on a nine-point rating scale indicated their preferences. The results were then processed by a computer program, Conjoint Value Analysis (CVA), Version 2.0 system. They indicated their preferences by ranking a number of different combinations of attribute levels to give utility values for the attributes. Six representative camps (three large and three small ones) were used for a stratified sample of 428 respondents. The findings will give recommendations that can be used. AFRIKAANS : Die behoefte vir die studie is aangespoor deur gesprekke met my medefotograwe en vriende dat minder mense die Nasionale Kruger Wildtuin die laaste aantal jare besoek het. Veskeie redes is daarvoor gegee. Ek het dit met Professore G. Puth en A. N. Schreuder, en lede van die Nasionale Parkeraad bespreek. Oorspronklik is besluit dat 'n studie gedoen behoort te word oar hoekom daar 'n afname in die vraag vir akkommodasie in die Wildtuin was, en hoe dit moontlik verbeter kon word. Mnr. P. Fearnhead en Professor A. N. Schreuder het voorgestel dat dit beter sou wees indien 'n prysssensitiwiteit-studie met 'n nuwe rekenaarprogram, nl. gesamentlike analise ("conjoint analysis"), gedoen sou word. Hierdie tipe studie was nag nie voorheen in Suid-Afrika gedoen nie. Een van die hoof oogmerke van 'n gesamentlike analise is om verbruiksvoorkeure tussen mededingende produkte en dienste te meet. Basies meet dit voorkeure van toeriste deur kompromiee ("trade-offs") tussen vyf eienskappe en sewentien vlakke te maak, en dat verbruikers komplekse besluite maak nie oar een eienskap aileen nie, maar verskeie eienskappe gesamentlik ("jointly"). Daarom is dit gesamentlike analise ("conjoint analysis") genoem. Hulle voorkeure word gewys deur die toekenning van 'n rangorde aan 'n aantal veskillende kombinasies van eienskap-vlakke op 'n nege-punt skattingskaal. Die resultate is daarna deur 'n rekenaarprogram, Conjoint Value Analysis (CVA), Version 2.0 sisteem, verwerk. Hulle wys hulle voorkeure deur die toekenning van 'n rangorde van 'n aantal van verskillende kombinasies van eienskap-vlakke om nuttigheidswaardes vir die eienskappe te gee. Ses verteenwoordigende kampe (drie grates en drie kleintjies) is gebruik vir 'n gestratifiseerde steekproef van 428 respondente. Die bevindings sal aanbevelings gee wat gebruik kan word. / Dissertation (MCom)--University of Pretoria, 1999. / Marketing Management / MCom / Unrestricted

Termites are considered to be major ecosystem engineers in tropical and sub-tropical environments, and fire in savanna systems is regarded as a major and necessary disturbance for the maintenance of biodiversity. However, most fire ecology studies have focused on vegetation dynamics with little attention given to other taxa, especially invertebrates. This thesis has addressed several aspects of savanna termite ecology. First, based on a review of studies examining the relationship between fire ecology and termites, I found that few broad conclusions can be made based on the published literature. Hence little is known on the interactions between termites and ecological processes such as fire. Leading on from this, several recommendations are provided in the thesis for future research to improve ecological understanding of savannas and the dynamics that structure these systems. Second, savanna termite responses to long-term burning regimes were investigated across four distinct savanna types along a rainfall gradient in South Africa using comprehensive sampling protocols. This was achieved using experimental burning plots which have been in place in the Kruger National Park (KNP) since 1954 as well as sites in Hluhluwe-iMfolozi Park. Termite communities were found to differ significantly between these savannas with higher diversity at Pretoriuskop, a mesic savanna but not the wettest. Termite diversity was lowest at the most arid site (Mopani) but certain feeding groups peaked at Satara, a savanna with intermediate rainfall. Differences between these savannas are attributed to broad underlying changes in net primary productivity, temperature and soil type, with the role of mammalian herbivores also being considered. Seasonality was also examined and it was found that termite activity peaks in the wet and transitional seasons and is significantly lower in the dry season. Considering different fire regimes, termites, in general, were found to be highly resistant to burning, but assemblage composition was affected, this being more pronounced at the mesic savanna where fire has more effect on vegetation. These assemblage changes are linked to changes in vegetation structure caused by fire. Finally, termite ecology is often constrained by sampling difficulties and a lack of sampling protocols in savannas. A comparison of two often used sampling methods, baiting and active searching, was conducted across the savanna types studied. The efficiency of sampling method varied along the rainfall gradient and a single method was not the best for all savanna types. In mesic savannas, active searching (an often neglected sampling method in savannas) was most effective at sampling termite diversity while baiting was more effective in arid savannas, although this method is biased toward wood-feeding termites from feeding group II. Baiting also provides a better measure of termite activity than active searching. I demonstrate that termite communities differ significantly with savanna habitat and their responses to long-term burning regimes differ between these habitat types. Although termite communities were found to be quite resistant to burning, the degree of resistance differed with savanna type and management policies in protected areas and elsewhere need to take this into account when formulating conservation policies. Similarly, sampling methods differ in their efficiency at different sites which needs to be considered when designing sampling protocols in order to accurately reflect the biodiversity present. / Dissertation (MSc)--University of Pretoria, 2010. / Zoology and Entomology / unrestricted

The African buffalo (Syncerus caffer) is a member of one of Africa’s most well known tourist attractions and unique grouping of mammals – the ‘big five’. Historical records indicate that during the 19th century approximately 3 million African buffaloes inhabited almost the whole of sub-Saharan Africa. Several factors such as disease, habitat fragmentation, over-hunting and drought reduced the buffalo population to approximately 400 000 by 1990. The African buffalo is host to a variety of sub-acute diseases, such as bovine tuberculosis (BTB), foot-and-mouth disease (FMD) and corridor disease (CD). Disease is an important factor which influenced African buffalo populations throughout the continent and more specifically the Kruger National Park (KNP) and is largely responsible for the fact that buffaloes are restricted to enclosed areas with strict regulations imposed on their movement. The social organization of animals influences the distribution and spread of a disease - especially in the case of the African buffalo in the KNP. The emergence of BTB in the largest conservation area in South Africa (the KNP), threatens wild and domestic animals and humans who are in close proximity to the Park. The potential economic losses associated with this disease are excessive. The results presented in this thesis provide baseline information into the genetic status of sampled African buffaloes in the KNP, genetic relatedness between sampled individuals as well as BTB associations between sampled African buffaloes in the KNP, based on a limited dataset of 181 animals. Twelve microsatellite markers were used to evaluate 181 samples which were collected from 39 locations dispersed throughout the KNP. Specific population genetic parameters revealed information based on the intra and inter - relationships at the ‘per population’ level as well as at the ‘per prevalence group’ level. Evidence indicates a medium to high level of genetic diversity, a low to medium level of inbreeding (inbreeding coefficient (Fis) for each group ranges between 0.143 and 0.147) and a relatively high level of migration for buffaloes associated with each prevalence group. Pairwise relatedness estimates were determined between individuals, to reveal their level of relatedness (unrelated, full siblings, parent-offspring or half siblings), based on Queller and Goodnight’s (1989) coefficient of relatedness. Relatedness was determined on different levels, intra and interpopulation level, BTB infected and BTB uninfected group level as well as prevalence group levels. Evaluation of data based on these different levels and between different groups, painted an overall picture of the disease condition and genetic relatedness within and between sampled BTB infected and BTB uninfected buffaloes. Evidence indicated that the greater majority of our sampled African buffaloes (BTB infected or uninfected), were genetically unrelated (in terms of sibling and parent-offspring relationships), irrespective of their disease status. M. bovis infected buffaloes sampled and used in our study are not more closely related to each other than to uninfected buffaloes in the same population or prevalence group. / Dissertation (MSc)--University of Pretoria, 2010. / Production Animal Studies / unrestricted