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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

UFS academic appointed as team doctor for SA Olympic Team
2012-03-22

 

Dr Holtzhausen’s appointment reflects well on the quality of exercise and sports medicine presented at the university.
20 March 2012

Dr Louis Holtzhausen, Head of the university’s Department of Sports and Exercise Medicine, has been selected by the South African Sports Confederation and Olympic Committee (Sascoc) as team doctor for the more than 300 athletes that will represent South Africa at this year’s Olympic Games in London.

“This is definitely one of the most important highlights of my career, in which I’ve worked with professional athletes and top sporting people,” says Dr Holtzhausen, a recognised South African academic in Sports Medicine.

“It is not only an honour to be appointed as team doctor for the South African Olympic Team. It is also a privilege to represent the UFS. The fact that Sascoc approached me reflects well on the quality of exercise and sports medicine that we present here at the university,” says Dr Holtzhausen.

Dr Holtzhausen says he has already worked with some of the athletes in the Olympic Team. These include members of the South African boxing team, the hockey team, as well as track and field athletes that have been preparing for the Olympic Games at the university’s High Performance Unit.

There is, however, hard work ahead for Dr Holtzhausen. His work will start before the team leaves for London in July. “I have to ensure that all the athletes are healthy and that everyone’s immunisation programmes are up to date. We also have to ensure that no athlete takes banned substances,” he says.

During the Games, Dr Holtzhausen will keep an eye on the optimal functioning of every athlete. “Anything that could hamper them medically will be sorted – whether it’s a broken ankle or a cold,” he says.

He will also see to it that medical services are available during the competition. Immediate medical assistance will be available, especially at high contact sports like boxing.

Dr Holtzhausen has also been team doctor for Team South Africa at the All Africa Games, the biggest sporting event in Africa. He was recently appointed as a member of the International Committee and Coordinator for Africa of the worldwide Exercise is Medicine project. This project proposes that exercise be used in the prevention of chronic disease in the general population, as well as in the treatment of people with existing chronic diseases. Dr Holtzhausen is also an honorary member of the South African Sports Medicine Association (SASMA). This membership is awarded to members of the medical and scientific community who make significant contributions to the advancement of sports medicine.

Dr Holtzhausen is a member of the Vice-Chancellor’s Prestige Scholars Programme.
The goal with the Prestige Scholars Programme is to select no more than 100 of the most promising young scholars (typically holding lecturer status) and to make substantial investments in their development towards the professoriate. A tailored, intensive programme of support has been designed which combines international placement working alongside leading scholars in the discipline of the prestige scholar, with intensive mentorship and support from within the university.

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