Thesis (MScBosb)--University of Stellenbosch, 2005. / Bibliography. Also available via the Internet.

Please read the abstract in the section 00front of this document / Dissertation (MSc (Botany))--University of Pretoria, 2006. / Plant Science / unrestricted

Thesis (MSc. Agriculture (Remote Sensing)) -- University of Limpopo, 2015 / Savannas are the most important ecosystems for raising livestock in Africa. In the past 50 years, evidence has shown that savannas throughout the world are being altered by bush encroachment. This is an ecological succession process where perennial plants such as shrubs and trees replace annual vegetation. This reduces the amount of palatable fodder and directly threatens livestock productivity in many localities. This study evaluated long-term bush encroachment using multi-date Landsat Thematic Mapper (TM) images 1989, 1990, 1993, 1995, 1999, 2004 and 2008 to reconstruct changes in spatial distribution of trees and shrubs at the Towoomba Reseach Station over a period of 19 years, from 1989 to 2008. Grasses and woody species were classified using unsupervised classification and Normalised Difference Vegetation Index was used to assess forage productivity and change in vegetation with years. The study was carried out at Towoomba Research Station in Bela Bela, Limpopo Province, South Africa. The study revealed that bush encroachment is a natural process and is independent of the grazing patterns. The results show that if not monitored encroaching species will make it difficult for grazers to get underneath the trees and also disturb the photosynthetic process of grass thereby replacing the grass. The study further showed that satellite remote sensing has the potential for monitoring rangeland quality. Keywords: Bush encroachment, remote sensing, classification and Normalised Difference Vegetation Index

Published Article / The central regions of South Africa experienced an abnormally high precipitation during the first quarter of 2009, thus resulting in an unusually high probability of veld fires due to the excessive amounts of fuel / grass available. In South Africa the process of land redistribution was recently drastically accelerated. This implies that many newly settled black farmers are fanning but still need to be trained in various aspects of farm management. Unfortunately, in most cases this training did not include environmental management, which among others, implies managing and preparing for veld fires. The Department of Water Affairs and Forestry also does not have sufficient funding to cover all these aspects and a regional collaborative plan must therefore be developed. In addition to this, in an attempt to alleviate poverty, many other previously disadvantaged people in South Africa must be assisted in establishing small business enterprises. This paper will highlight a process to be followed to train and coordinate all farmers and simultaneously establish business opportunities that will remove some of the fuel (grasses and shrubs) in order to reduce the risk and intensity of winter and spring veld fires.

Research into the psychological consequences of natural disasters in South Africa remains largely unexplored. This is surprising, given the devastating economical and psychological ramifications that result from major catastrophic events. No research has been done relating specifically to the experiences and coping strategies of fanners who have experienced a veld fire disaster in South Africa. Farmers constitute an important sub-group for study as they may be psychologically at risk to the effects of disasters. In the international research arena exploration of the long-term consequences of disasters is lacking. In considering the question of coping following a disaster, few studies have focused on the influence of temporal dynan1ics, which would seem to be crucial to the outcomes of coping strategies. This study aims to address these gaps in the literature by exploring the experiences and coping strategies of farmers who have experienced a veld fire disaster which occurred in the North West Province of South Africa on 23 August 2011. The total financial loss as a result of the fire amounted to R42 276 I 71. The fires were allegedly caused by damaged power lines, which produced sparks and ignited the nearby veld. This study used a qualitative design. This methodological approach was adopted for its ability to capture the complex and time-sensitive dynamics of coping strategies. This was combined with a case study approach, based on the experiences and coping strategies of eight farmers who had experienced a veld fire disaster within the boundaries of one geographical area. Semi-structured interviews were conducted with the farmers in their homes and were recorded, transcribed and thematically analysed. The results of the analysis showed that the farmers progressed through three time periods with distinct patterns of experience and corresponding coping strategies. The person environment relationship, as well as transitioning situational demands inherent in this relationship, were found to be crucial in determining the outcomes of the fanners• experiences and coping strategies. The results also suggest that successful coping is reliant on the individual’s ability to continually adapt their coping strategies in a context-appropriate manner. It is recommended that psychological debriefing should be avoided and that crisis intervention teams (CIT) should focus on the long-term consequences of the veld fire. Future coping research needs to take the temporal aspects of coping into account. / MA (Research Psychology), North-West University, Potchefstroom Campus, 2014

Thesis (M. Environmental Science)--North-West University, Potchefstroom Campus, 2008.

Research into the psychological consequences of natural disasters in South Africa remains largely unexplored. This is surprising, given the devastating economical and psychological ramifications that result from major catastrophic events. No research has been done relating specifically to the experiences and coping strategies of fanners who have experienced a veld fire disaster in South Africa. Farmers constitute an important sub-group for study as they may be psychologically at risk to the effects of disasters. In the international research arena exploration of the long-term consequences of disasters is lacking. In considering the question of coping following a disaster, few studies have focused on the influence of temporal dynan1ics, which would seem to be crucial to the outcomes of coping strategies. This study aims to address these gaps in the literature by exploring the experiences and coping strategies of farmers who have experienced a veld fire disaster which occurred in the North West Province of South Africa on 23 August 2011. The total financial loss as a result of the fire amounted to R42 276 I 71. The fires were allegedly caused by damaged power lines, which produced sparks and ignited the nearby veld. This study used a qualitative design. This methodological approach was adopted for its ability to capture the complex and time-sensitive dynamics of coping strategies. This was combined with a case study approach, based on the experiences and coping strategies of eight farmers who had experienced a veld fire disaster within the boundaries of one geographical area. Semi-structured interviews were conducted with the farmers in their homes and were recorded, transcribed and thematically analysed. The results of the analysis showed that the farmers progressed through three time periods with distinct patterns of experience and corresponding coping strategies. The person environment relationship, as well as transitioning situational demands inherent in this relationship, were found to be crucial in determining the outcomes of the fanners• experiences and coping strategies. The results also suggest that successful coping is reliant on the individual’s ability to continually adapt their coping strategies in a context-appropriate manner. It is recommended that psychological debriefing should be avoided and that crisis intervention teams (CIT) should focus on the long-term consequences of the veld fire. Future coping research needs to take the temporal aspects of coping into account. / MA (Research Psychology), North-West University, Potchefstroom Campus, 2014

Thesis (M. Environmental Science)--North-West University, Potchefstroom Campus, 2008.

Thesis (M. Environmental Science)--North-West University, Potchefstroom Campus, 2008.

M.Sc. / Mabula Game Reserve initiated an extensive grass-monitoring programme ten years ago. At the same time, management kept records of factors such as rainfall, burning, game numbers and game composition that might have an influence on grass production. They also conducted an extensive mapping programme over a number of years to familiarise themselves with the physical phenomena of Mabula, namely geology, soils, slope and aspect, that influence grass growth. The most important aspect of their mapping programme was to divide the reserve into different vegetation communities. The objective of the study is to supply Mabula Game Reserve with clear-cut evidence of the condition of the grazing resources at Mabula. The aim of the study is to assist the management of Mabula with future guidelines in the veld management of the reserve. The overall purpose of this study was to investigate the veld management efficiency of Mabula Game Reserve by establishing whether the ecological status of the grazing had been degraded or improved over the study period. This researcher analysed the grass monitoring data to determine veld condition indices, grazing values, perenniality and to establish the amount of climax and pioneer grass. He sequenced his research by: • classifying grass species in terms of the ecological index method to determine whether grass had been utilised in a sustainable manner or over-utilised;. • calculating the grazing capacity for each vegetation community over the past ten years; • highlighting those grass species in the analyses that showed abnormal growth or decline over the ten years; and • interpreting the results in terms of the ecological status of the relevant area.. The study was conducted firstly by categorising the grass monitoring stations into different vegetation communities. Ecological indices for each vegetation community was determined. The grass species that showed the biggest increase/decrease in the ten years of monitoring were seperated to determine the ecological significance of the increase/decrease. The ecoloical indices of the different vegetation communities were compared with each other to determine the overall improvement or deterioration of the veld quality. By re-calculating the game numbers for every year, this researcher was able to determine the Game Livestock Unit for the area. With this figure, he was able to differentiate between the grass utilisers, comparing them from year to year in terms of their grazing capacity. The study revealed that in order to obtain an objective view of the condition of the veld, it is necessary to evaluate the condition of the veld in terms of each vegetation community, as well as the total area. Such an approach would enable the manager to plan according to a specific vegetation community. The study also made it clear that it is necessary to reduce the number of game, but that this must be done by culling the appropriate group of utilisers. The necessity of introducing a browsing monitoring programme soon became evident. The study showed how the grass and game monitoring analyses for the area can be applied in association with the rainfall figures in forward planning in order to manage the sustainable utilisation of biological resources and to minimise the effects of drought conditions. The researcher concluded this study by highlighting the shortfalls of the ecological index method in determining the condition of the veld, and recommended other methods i.e. the Benchmark Method, Key Species Method, and the Weighted Key Species Method to supplement the present method. Another recommendation was to collect two different sets of data during monitoring to avoid conflicting results, as was the case with the 2004 survey. One data set should include herbs and forbs while the other set should only contain grass species.