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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

“Leisure can be of great geographical importance”
2013-09-26

 

Prof Gustav Etienne Visser
Photo: Supplied
26 September 2013
 

Prof Gustav Etienne Visser (43) is Professor in Human Geography at the University of the Free State. He has been with the university’s Geography Department since January 2002 and became a full professor in 2009.
Visser completed his MA in Geographical Research at the Stellenbosch University in 1996 and finished his PhD in Geography at the London School of Economics and Political Science in 2000. His thesis was titled: Spatialities of social justice: reflections on South African Cities.

Visser was a Post-doctoral Fellow at the School of Geography, Archaeology and Environmental Studies at the University of the Witwatersrand before his appointment at the UFS. He now teaches Urban Geography to third-year students and Tourism and Development to MA students.

His research interests so far have been Identity-based consumption and urban morphological change, Tourism and development nexus and Critical reflections on South African Geographical Research.

Visser’s publications summary is as follows:

- Four books – edited collections
- 28 book chapters
- 71 refereed articles
- Nine academic commentaries and research notes
- 14 research reports
- and 38 conference papers

His latest research on how people’s leisure time influences our urban spaces, is fundamentally relevant to everyday life.

“We tend to forget to think about it, but how people spend their leisure time is part of their lifestyle,” says Visser.“ And our urban surroundings are influenced by the lifestyles of its inhabitants.”

When asked about his own leisure time and activities, Visser humorously responds “There is no such thing.”

However, he is passionate about eating, cooking and wine.
“I must also watch a series every day – Dexter is definitely my favourite.
“Furthermore, I also travel abroad for about three months of the year, which is mainly for my research concerning urban spaces.”

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