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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

Centre for Universal Access and Disability Support HOD selected as prestigious Fulbright scholar

2015-06-24

Hetsie Veitch and Gabriela Schroder
Photo: Valentino Ndaba

Hetsie Veitch, who has served as the Head of the Centre for Universal Access and Disability Support at the university for the past seven years, recently won the prestigious Fulbright Scholarship for studies in the USA. Hetsie has been placed at the renowned Syracuse University in Upstate New York, where she will read for a PhD in Disability Studies in the School of Education.

By focusing on matters of social justice in the pedagogy of higher education, Hetsie will explore the creation of universally accessible learning spaces for students so that she can apply these ideas on her return to South Africa in four years.

Under her leadership, the Unit for Students with Disabilities (USD) was transformed into the Centre for Universal Access and Disability Support (CUADS) in order to reflect new approaches to universal access and universal design.“It is my ultimate goal,” says Hetsie, “to create an institutional culture that includes and welcomes all students with disabilities.”

It is difficult to fully capture the enormous contribution Hetsie has made to the UFS in disability justice, by establishing platforms for students with disabilities that enable them to be appreciated as individuals, and to excel in academic studies.

One of our star students, Gabriela Schröder, also won the prestigious Fulbright Scholarship. Gaby, as she’s called, will be taking up doctoral studies in Biochemistry at a leading university in her field, namely North Carolina State University in Raleigh, North Carolina.

Gaby earned her BSc Honours degree in Biochemistry at the University of the Free State, after also completing her undergraduate studies in Chemistry and Biochemistry at Kovsies.

She participated in the F1 Leadership for Change Programme (Class of 2011) as part of the first-year cohort that went to the University of Vermont. In 2012, she was selected to participate in the elite Stanford Sophomore College Programme with students from Oxford University (UK) and Stanford University in California.

In 2014, Gaby was awarded the Dean's Medal, a distinction which is presented to the best final-year student studying towards a Bachelor’s degree in the Faculty of Natural and Agricultural Sciences. She was also the proud recipient of the Senate Medal, awarded for academic excellence in the achievement of a Bachelor’s degree at the university.

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