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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.

News Archive

Postgraduate success rewarded during winter graduation ceremony
2012-06-06

The university is celebrating an increase in postgraduate success with a record number of master’s degrees and doctorates to be awarded during the winter graduation ceremony on 14 June 2012.

A total of 481 master’s degrees and 82 doctorates will be awarded in two ceremonies in the Callie Human Centre on the Bloemfontein Campus. This is the most postgraduate qualifications to be awarded at a single graduation ceremony. 

The university will also award an honorary doctorate in Literature to the author, Etienne van Heerden. Van Heerden, the author of Dertig Nagte in Amsterdam and Toorberg, among others, will be honoured with a D. Litt degree. Van Heerden, currently Hofmeyr professor and Head of the Department of Afrikaans and Dutch studies at the University of Cape Town, is one of the most acclaimed Afrikaans writers. His novels have been translated into eleven languages and his contributions are included in anthologies worldwide. One of his most important contributions to South African society is his creation of LitNet and the development of this powerful digital website that now also includes two accredited journals.

Ms Nicky Abdinor, a clinical psychologist of Cape Town, who was born without arms and with shortened legs, will be the guest speaker at the graduation ceremony.

The programme for the two ceremonies is: 

  • At 10:15, the Faculty of Natural and Agricultural Sciences will award 231 master’s degrees and confer 43 doctorates. The Faculty of Health Sciences will award 52 master’s degrees and confer seven doctorates. 
  • At 14:15, the Faculty of Economic and Management Sciences will award 62 master’s degrees and confer seven doctorates. The Faculty of the Humanities will confer one honorary doctorate, award 47 master’s degrees and confer 13 doctorates. In the Faculty of Education, 22 master’s degrees will be awarded and nine doctorates conferred. In the Faculty of Law, 34 master’s degrees will be awarded and one doctorate conferred. The Faculty of Theology will award 33 master’s degrees, and confer two doctorates.
     

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