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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

Trading innovative ideas for academic bursaries worth R275 000

2015-11-09

The top three individual bursary winners with TATA and UFS representatives. From Left: Naquita Fernandes, Henrike Prinsloo, Lebohang Motsisi, Stefan Strampe, Dr. Johan van Zyl, Jehan van Vuuren, Sanjeeb Lahiri and Salomien Boshoff.
Photo: Lize Van Den Berg

Learning from industry experts is essential for students’ development. When that learning eases the financial burden of tuition fees, it is even better. TATA Africa has ensured that students from the University of the Free State (UFS) earn academic currency for displaying leadership and business skills.

Jehan Van Vuuren walked away with R40 000 in his student account, Hendrike Prinsloo earned herself R30 000, Stephan Strampe has R25 000 less to worry about when the 2016 academic year arrives, and seven other students managed to save their parents R20 000 each.

These top 10 Strategic Marketing students from the UFS Department of Business Management and Department of Communication Science took up the challenge of devising strategic concepts to be implemented by the Africa branch of TATA Group companies.

TATA Group is a multinational conglomerate which specialises in a wide range of products and services, such as automobile manufacturing, hotel accommodation, construction, textiles, food and beverages, amongst other enterprises operating under its banner. On 15 October 2015, the company’s Head Office representatives signed a cheque for R275 000 to reward the creative input of our students.

Lesle-Ann George won an academic bursary worth R20 000 for her individual effort, and was also part of one of the best four groups that won R10 000 each. She said the competition was an opportunity of a lifetime. The financial aid will be channeled towards the BCom Marketing Honours degree she intends pursuing next year.

The students’ ideas included market research for TATA motors, the development of a mobile application for the Taj Hotel, as well as innovative student-oriented social media, and guerrilla marketing strategies.

“This collaborative partnership between TATA Africa and UFS has provided the students with an opportunity to learn from key role-players in the industry and, in turn, to gain practical exposure to real-life industry happenings,” said Naquita Fernandes, a Business Management lecturer and the competition’s co-organiser.

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