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21 April 2023 | Story Leonie Bolleurs | Photo Supplied
Dr Katlego Mashiane
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

University grooms future leaders
2013-02-28

Nangamso Koza, volunteers and learners who participated in the RCL training programme.
Photo: Linda Fekisi
28 February 2013

The UFS recently hosted a group of Representative Council of Learners (RCL) from 24 high schools in the Free State. The learners participated in a RCL training programme, the first of its kind, which will take place on a quarterly basis.

The learners were welcomed by Prof Jonathan Jansen, Vice-Chancellor and Rector of the university. Prof Jansen emphasised the need for academic excellence in his welcoming speech, telling learners not to settle for a pass rate of 30%. He motivated them to study hard in order to reap rewards, regardless of their disadvantaged backgrounds. He told them about first-year student, Zandile Kwela and others, who excelled in the 2012 matric exams despite disadvantaged backgrounds.

Nangamso Koza, Research Assistant in the office of the Vice-Rector: External Relations, who helped to coordinate the programme, said leadership development is vital, as early as the basic education phase. “The objective was to offer the RCL some of the skills and knowledge we have, to enable them to dream out of the box."

Mr Pura Mgolombane, Assistant-Dean of Student Affairs, shared what student leadership is all about, the values that a leader needs to have and the relevant constitutional documentation and acts they need to know.

Madineo Mofokeng, an RCL member from Excelsior Combined School, describes her experience as a great one. “I learnt many things that will help me improve my school. I also learnt that by believing in yourself, you can do anything you put your mind to,” she added.


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