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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

USSA cross country 2008
2008-10-16

The student cross country championships of 2008 took place on the 29 and 30 September 2008 at the University of Kwazulu Natal.

‘n Total of 109 athletes took part. The Kovsies men`s team was Boy Soke, Johan Cronje, Michael Tlhoro, Dirk Gouws, Ben Smit and Antonie Peens. The womens team was represented by Este de Jager, Abongile Lerotholi, Thandi Malindi, Rone Reynecke en Maryna Swanepoel.

The women’s team took the honours by winning the team competition in the 4km race. They finished as follows: De Jager 3rd, Lerotholi 5th, Malindi 6th, Reynecke 7th and Swanepoel 16th.

The men’s team also did well under circumstances – Our number 2 and 3 runners were injured and Antonie Peens, our number 5, was diagnosed with measles on the morning of the race. They finished 3rd in the men`s 4km race. However the men can kept their heads high. They finished as follow: Soke 2nd, Cronje 12th, Tlhoro 17th, Gouws 29th and Smit 39 th.

In the road relay race our womens team again did us proud by winning the race by a huge margin. Our team was Thandi Malindi, Abongile Lerotholi and Este de Jager.

The men`s team perform well under difficult circumstances by finishing 4th.  The team was Dirk Gouws, Johan Cronje, Michael Tlhoro en Boy Soke.

Este de Jager

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