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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

Kovsies to celebrate excellence at 2014 December Graduation Ceremony

2014-12-02

Live streaming: http://apps.ufs.ac.za/ufslivestreaming/

On Thursday 11 December 2014, the University of the Free State (UFS) will award degrees and qualifications during our Summer Graduation Ceremony at the Bloemfontein Campus.

The graduation will take place during two ceremonies in the Callie Human Centre, where master’s and PhD degrees will be awarded during the first ceremony at 09:30. Diplomas, certificates and undergraduate qualifications will be awarded to students from the School of Open Learning and the Faculty of Health Sciences at 14:30.

Radio personality, Redi Thlabi, and cardiothoracic surgeon, Dr Susan Vosloo, will address the graduates.

Apart from her radio show on 702 and CapeTalk, Thlabi has also hosted local television news shows and anchored for international broadcasters like SKY and the BBC. In addition, she has presented two of her own TV shows: ‘Redi’ on Mzansi Magic and ‘South to North’ on Al-Jazeera.

Her first book, Endings and Beginnings (Jacana) received popular acclaim and is currently being turned into a screenplay for a movie.

Dr Susan Vosloo, a Kovsie alumnus, graduated in 1980. She completed her internship in Pretoria and spent the following year in Critical Care Medicine at Universitas Hospital, Bloemfontein, before starting her surgical training in Johannesburg.

She is currently in independent private practice at the Netcare Christiaan Barnard Memorial Hospital in Cape Town, having also worked from 1998 – 2012 at the Vincent Pallotti Hospital in the same city.

Dr Vosloo maintains close ties with our university and has quite a number of addition roles to that of surgeon:

• member of the Council of the UFS;
• UFS Council Representative in the Senate;
• member of the Standing Advisory Committee of the School of Medicine, UFS;
• member of the Provincial Department of Health;
• Africa representative for the Pediatric Cardiac Intensive Care Society; and
• founding member of the World Society for Pediatric and Congenital Heart Surgery.

Prof Boelie Wessels will also be awarded his 10th academic degree from the UFS since 1974. Adding his Honorary Doctorate degree to the list, it will make this his 11th degree. Prof Wessels is 84 years old and has 18-plus academic qualifications from various institutions – a phenomenal achievement.

Furthermore, Moses Lubinga and his wife, Stellah, will be the first married couple to be awarded their PhDs at the same graduation ceremony at the UFS. Mr Lubinga will receive his Doctorate in Agricultural Economics, while Mrs Lubinga’s PhD is in the field of Economic and Management Sciences.

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