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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

Nadine Gordimer lauds university for transformation
2012-11-09

Nadine Gordimer
Photo: Sonia Small
09 November 2012

Lecture (Pdf format)

Renowned writer and Nobel Prize winner Nadine Gordimer has lauded the university for its efforts at reconciliation, highlighting several initiatives the university has put in place over the last few years.

She delivered the inaugural Reconciliation Lecture on the Bloemfontein Campus, and was introduced as a “champion of human oneness” by Prof. Pumla Gobodo-Madikizela, Senior Research Professor on Trauma, Forgiveness and Reconciliation, who also referred to Gordimer as “the living expression of the power of critical consciousness”.

Gordimer praised the university by saying it was doing things in South Africa differently from what had been done during the country’s shameful past. In a message addressed at students, her lecture touched on topics of race, reconciliation, freedom of expression, education, inequality and poverty.

“Black and white – we have been conditioned; no, brain-washed, by legal and cultural and even religious, demeaning distinctions between race and colour. This university has discarded; is tackling these: an image breaking of false consciousness. We await your generation’s entry to public life, when you come out of the University of the Free State equipped to bring to us, along with your professional degrees, the way to function in a population as the human beings you have learnt to be at this university.”

The Nobel laureate also warned students of threats facing South Africa’s future.

“What is your reaction, then, to the Protection of State Information Act, the Secrecy Act that has been drop on our heads? The Secrecy Act means that we the people are not allowed to know the facts about our own country. Know how our society, our population is manoeuvred by those entrusted and empowered by our votes.”

The inaugural lecture was hosted by the Vice-Chancellor and Rector, prof. Jonathan Jansen, and the Rectorate, with the support of the Institute for Reconciliation and Social Justice and Prof. Gobodo-Madikizela.

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