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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

Teachers from America attend SAFEFE conference
2009-08-07

 
At the conference were, from the left: Ms Zandile Gxwati, Director: General Education and Training, Free State Department of Education, Prof. Klopper Oosthuizen, Director of SAFEFE and associated with the Department of Agricultural Economics at the UFS, Prof. John Brock, Director: Centre for Economic Education, University of Colorado, USA and Prof. Herman van Schalkwyk, Dean: Faculty of Natural and Agricultural Sciences, UFS.
Photo: Lacea Loader


A delegation of 12 teachers from 12 different states in the United States of America (USA) visited Bloemfontein this week to attend a conference at Bain’s Game Lodge presented by the University of the Free State’s (UFS) South African Foundation for Economic and Financial Education (SAFEFE). Amongst others, the conference aimed to inform the teachers about education in the province and the importance of the ongoing involvement of universities in the R-12 school system. The conference was also attended by representatives from the Free State Department of Education.

The group of teachers form part of a larger delegation of 28 teachers from the USA who are currently visiting South Africa. The delegation is part of the Council for Economic Education (CEE) in the USA’s Economics International Programme that is presented at the UFS in cooperation with SAFEFE. The teachers are visiting several schools in the country to gain experience about the South African school system.

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