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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

Prototype film degree introduced for Kovsies

2015-06-11

As of 2015, the university’s postgraduate prospectus was modified to include a new Bachelor of Arts Honours in Film and Visual Media course in the Faculty of the Humanities.

A group of eight pilot students are being exposed to basics studies in film history, research, and practical production exercises. The programme’s prototypical nature lies in its inter-disciplinary approach, which means students will integrate film history and theory with individual short film production.

According to the Programme Committee, “the two parts enrich each other, so students’ practical work is conceptually much stronger, and their written work is more balanced.”

“While other universities locally and abroad do offer film qualifications, the emphasis usually falls on either the history and theory of film, or the making of films. Our programme is the only one in South Africa (that we know of) that offers this specific kind of integration.”

Chris Vorster, Dr Anthea van Jaarveld, Prof Helene Strauss, and Johanet Kriel are responsible for lecturing, and providing personalised supervision to students. These lecturers form part of a Programme Committee, which also includes Prof Annie van den Oever, Cloete DeBeer, and Martin Rossouw.

The university has built a multi-camera studio, equipped with state-of-the-art equipment, editing facilities, and an intimate movie theatre to facilitate a thorough teaching and learning process.

Rethabile Radebe, one of the students, says she values the teaching approach of the lecturers, highlighting the positive impact of constructive criticism they offer. “My self-confidence is much better so I think, even though they help you academically for you to get your grades correctly, they also help you as a person. When you’ve done well, they don’t forget to tell you.”

This student’s views run parallel to Kriel’s, which are to “help students to perform at their best, and to develop and align our curriculum better for next year,” when an additional seven students are to be accommodated. The university, in collaboration with the University of Groningen in the Netherlands, is modelling the curriculum to ensure holistic film education.

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