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21 April 2023 | Story Leonie Bolleurs | Photo Supplied
Striving to make a difference in the field of biodiversity conservation, Dr Katlego Mashiane decided to pursue a PhD in Geography, focusing on the spatial modelling of grassland diversity and nutrients in subalpine environments. He received his PhD during the recent April graduation ceremonies on the Qwaqwa Campus.

In the small village of Ga-Mabotia about 25 km outside of Polokwane, Dr Katlego Mashiane grew up, surrounded by rocky mountains characterised by boulder outcrops, where he interacted with nature from an early age. 

He recently obtained his PhD, majoring in Geography, from the University of the Free State (UFS), which was conferred on him during the April graduation ceremonies that took place on the UFS Qwaqwa Campus. The title of his dissertation is Grass nutrients estimation as an Indicator of rangeland quality using satellite remote.

Predicting the presence of biodiversity and nutrients in an area

Based on the principle that diverse grasslands tend to perform better, environmental changes threaten the resilience and services these grassland ecosystems provide. The study examined how many different types of plants and animals can be found at a particular place to enhance our understanding of the ecosystem’s value to humans, and that biodiversity loss will reduce these ecosystem services. Focusing on spatial modelling of grassland diversity, Dr Mashiane specifically investigated the influence of topography and remotely sensed satellite data on species richness and diversity in subalpine environments, and how they are affected by the availability of grass species. To determine this, he used a random forest machine-learning algorithm to find the best information in the data that could be used to estimate the levels of species richness, diversity, and nitrogen in a protected national conservation park. 

His study discovered that some data types – such as the near-infrared variable and certain vegetation data (EVI and SAVI) – were especially useful for determining the number and variety of species in a certain area. With this information, scientists can create models that predict the presence of different types of biodiversity and nutrients in an area.

Playing a key role in protecting our natural assets

Equipped with this knowledge, one will be able to understand how to protect and preserve different types of biodiversity and promote the nutritional value of both plants and animals in the environment. “Land managers could use this information for conservation strategies,” states Dr Mashiane, who decided to pursue this study because he was curious about how environmental changes will affect species.

“Grasslands provide important ecosystem services underpinning human well-being, and therefore warrant our protection; I would like to play a role in protecting our natural assets and contribute to understanding our biomes, especially in the context of global change,” he says.

In the next five years, Dr Mashiane plans to pursue further research and mentor other students in his field of study.

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Top PhD graduates hailed for excellent research in development and historical studies
2017-07-11

 Description: Top PhD graduates hailed for excellent research  Tags: Top PhD graduates hailed for excellent research  

Prof Melanie Walker and Prof Ian Phimister

The Centre for Research on Higher Education and Development and the International Studies Group celebrated its PhD graduates on 26 June 2017. The four graduates were joined by their PhD promoters Prof Ian Phimister and Prof Melanie Walker, the Dean of the Faculty of Economic and Management Sciences, and their families, who came from far and wide, as well as various faculty academics and staff. Their areas of study ranged between Development Studies and Africa Studies, exploring issues that make a significant impact on the Southern African region and the continent as a whole.

In the Faculty of Economic and Management Sciences, specialising in Development Studies, Dr Faith Mkwananzi, promoted by Prof Merridy Wilson-Strydom, explored the lives and educational aspirations of marginalised migrant youth, a case study in Johannesburg. She focused on the complex nature of the daily lives and experiences of marginalised migrant youth and the complexities that influence the formation and achievement of educational aspirations in contexts of vulnerability and disadvantage. The study provides compelling evidence for policy and practice that can make the lives of marginalised young migrants better.

A focus on teaching and learning in Zimbabwean universities with a focus on quality as a human development, was what Dr Patience Mukwambo, put her research efforts into. Her work makes an original contribution to national, continental, and international debates on conceptualising and operationalising the quality of teaching and learning in higher education. She successfully developed a significant alternative approach to understanding what quality in higher education teaching and learning entails, the factors that influence the realisation of quality as she theorises it, and the overall importance for human development and human well-being in universities and society.

Dr Bothwell Manyonga, who also specialised in Development Studies, examined the broader debates on the purposes and practices of teaching and learning in higher education with a case study at two South African universities, with an emphasis on principles of social justice and equity. In the thesis, he developed a model that proposes grounds for (re)thinking sociology teaching and learning to address how the capabilities approach and dominant human capital theory might complement each other in higher education and curriculum development. This takes into account both the instrumental aim of employment, which is of concern to students, as well as the intrinsic goods of critical discourse and personal development.

In the Faculty of the Humanities, with a specialisation in Africa Studies, Dr Abraham Mlombo’s doctoral research explored the relationship between Southern Rhodesia and South Africa 1923-1953, examining the ‘special relationship’ between the two countries from the former’s perspective, highlighting the complexity of the ties between them by examining (high) political relations, economic links and social and cultural ties. “It is through Abraham’s research that for the first time, black experiences of both sides of the colonial border are detailed,” said Prof Phimister.

In congratulating the graduates, Prof Melanie Walker expressed that a lot of hard work was put into training the PhD candidates and they had without a doubt produced work that was of the highest level, at international standards.

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