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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

UFS honours many during Autumn Diploma and Graduation Ceremony

2006-04-06

The University of the Free State (UFS) will award 857 diplomas and 2 579 degrees on 21 April 2006 and from 24-26 April 2006 during this year’s autumn diploma and graduation ceremony. Students from the Main Campus and Vista Campus will take part in the ceremony.

Altogether 35 doctorates and two honorary doctorates will be awarded. The honorary doctorandi are Mr Pieter Cox (Ph D (hc)) and Mr Terry Moss (Ph D (hc)). Mr Cox is the non-executive chairperson of Sasol Limited and Mr Moss is General Manager: Generation Business Enhancement at Eskom.

On 21 April 2006 at 08:30 altogether 347 diplomas in all the faculties (except the upgrading programmes in the School of Education) will be awarded. On the same day at 14:30 altogether 361 degrees in the Faculty of Economic and Management Sciences (excluding B Acc, B Admin, B Pub and related honours, master’s and doctor’s degrees) will be awarded.

On 24 April 2006 at 08:30 altogether 510 diplomas will be awarded in the School of Education (ACE, NPDE and CE). That same day at 14:30 altogether 314 degrees, one doctorate and one honorary doctorate will be awarded in the Faculty of Economic and Management Sciences (i.e. B Acc, B Admin, B Pub and related honours, master’s and doctor’s degrees). The honorary doctorate will be awarded to Mr Pieter Cox during this ceremony.

Mr Cox will be honoured for being the driving force behind Sasol’s global expansion and the subsequent listing of Sasol on the New York Stock Exchange. His passion and focus ensure that Sasol as a national asset is constantly making history, despite the sometimes hostile economic and environmental influences.

On 25 April at 08:30 altogether 325 degrees and 9 doctorates will be awarded in the faculties of Health Sciences, Law and Theology. That same day at 14:30 altogether 554 degrees, 13 doctorates and one honorary doctorate will be awarded in the Faculty of Natural and Agricultural Sciences. The honorary doctorate will be awarded to Mr Terry Moss during this ceremony.

Mr Moss is regarded as a modern-day South African industrialist. He will be honoured for his dedication to the provision of sustainable renewable energy to the citizens of South Africa and Southern Africa through the development and promotion of the hydroelectric power industry and other sources of renewable electrical energy.

On 26 April at 08:30 altogether 427 degrees and 5 doctorates will be awarded in the Faculty of the Humanities and that same afternoon at 14:30 altogether 598 degrees and 7 doctorates will be awarded in the School of Education.

Both the diploma and degree ceremonies will be held in the Callie Human Centre on the Main Campus in Bloemfontein.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
5 April 2006

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