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Curiosity about environmental changes drives Dr Katlego Mashiane’s PhD research

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

Wayde, Karla crowned as KovsieSport’s best

2015-10-21

The pride of KovsieSport. From the left, are: Ox Nche
(UFS Junior Sportman of the Year), Karla Mostert
(Senior Sportswoman of the Year), Wayde van Niekerk
(Senior Sportsman of the Year), and Brett Walraven
(on behalf of his sister, Nicole Walraven – Junior Sportswoman of the Year).
Photo: Hannes Naude

The journey does not belong to him alone, but to everyone at KovsieSport.

These were the words of University of the Free State’s (UFS) Wayde van Niekerk, after being named as KovsieSport’s Senior Sportsman of the Year on Wednesday 21 October 2015.

The South African sports star walked away with the award for the third consecutive year, while the Protea netball defender, Karla Mostert, was crowned Senior Sportswoman for the first time.

The Junior Bok, Ox Nche, and the Protea hockey player, Nicole Walraven, were named as Junior Sportsman and Junior Sportswoman of the Year respectively.

Nche represented South Africa’s U20 rugby team this year at the Junior World Championships, played for the Shimlas, and was named the UFS Rugby Club’s best junior player.

Walraven made her debut for South Africa in 2015. She was crowned jointly as the best player at the Provincial U21 tournament, and was also Hockey South Africa’s U21 Player of the Year.

Van Niekerk won gold in the 400 metres at the World Championships in Beijing, becoming only the fourth athlete in history to run the 400 m in less than 44 seconds, and the 200 metres in less than 20 seconds.

“This is precious, and something I will cherish as an athlete: being part of KovsieSport,” he said.

“I arrived at the UFS as a high school boy, started as a junior, and was accepted immediately.”

“I really appreciate everybody who played such a huge part in my life.”

Mostert was named as Player of the Series in the Brutal Fruit series, as well as the Varsity series this year. She was also a star for the Proteas at the World Cup.

“This (the award) is definitely a good way to end my time at Kovsies. This is something one is trying to achieve for years, so it really is a highlight.”

She said it was difficult to describe how much KovsieSport is doing for its athletes, and this was the reason why the UFS achieves so many successes in sport.

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