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21 April 2023 | Story Leonie Bolleurs | Photo Supplied
Dr Katlego Mashiane
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

Research grant holder first to be graded at UFS in NRF’s Thuthuka Programme
2007-11-17

 

In the picture, from the left are: Ms Gudrun Schirge (National Research Foundation), Mr Nico Benson (Directorate Research Development at the UFS), Prof Heidi Hudson (Department of Political Science at the UFS) and Dr Annelize Venter (Co-ordinator of the Thuthuka Programme at the UFS)
Photo: Mangaliso Radebe

 

Research grant holder first to be graded at UFS in NRF’s Thuthuka Programme

Prof. Heidi Hudson, Departmental Chairperson at the University of the Free State's (UFS) Department of Political Science, recently received a C1 grading from the National Research Foundation (NRF).

With this grading she became the first researcher and grant holder in the Thuthuka Programme for young researchers at the UFS to be graded by the NRF.

“The Thuthuka Programme is a capacity building initiative from the NRF which prepares young researchers for grading and provides them with a good grounding for research,” said Dr Annelize Venter, researcher at the UFS Research Development Directorate and co-ordinator of the Thuthuka Programme.

According to Dr Venter, the UFS currently has 44 researchers who receive funding from the Thuthuka Programme for their postgraduate studies. The results of possible entrants to the programme in 2008 are awaited.

”The UFS also received ten researchers additional to the current 69 who have a valid evaluation status. The results of an additional 11 applications are also awaited. Some of these are first applications,” said Dr Venter.

Over and above the grant holders in the Thuthuka Programme, any researcher can apply to be evaluated by the NRF’s Evaluation Centre. The evaluation status of a researcher serves as the norm determinator and the quality of research at a university is measured according to this.

Ms Gudrun Schirge from the NRF presented a workshop today at the UFS to researchers who wanted to apply for grading and evaluation.
Researchers who wished to apply for the re-evaluation of their current evaluation status also attended the workshop.

Ms Schirge was one of the founders of the evaluation system and has been a manager at the Evaluation Centre for the past 20 years. She will be retiring this year and will be involved with the centre on a part-time basis.

Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za  
16 November 2007
 

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