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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

A time to celebrate: Autumn graduations

2016-04-07

General graduation information
Livestreaming

The first series of graduations for the year are upon us. Graduates from all seven faculties, the Business School, and the School of Open Learning at the University of the Free State (UFS) will be celebrating their academic achievements. A total of 3681 qualifications will be conferred at ceremonies on the Bloemfontein Campus from 12 to 15 April 2016.

Sejakhumo Makhetha, daughter of our Vice-Rector: Student Affairs and External Relations, Dr Choice Makhetha, will be among the graduates receiving BA Governance and Political Transformation degrees. Coincidently, Dr Makhetha obtained her PhD in Political Science in 2003 at the UFS. Sejakhumo Makhetha is currently busy with her postgraduate diploma in the same field.

The four-day celebration symbolises the UFS prerogative as an institution to transform lives by producing leaders of tomorrow. Dr Muavia Gallie, Dr Sello Hatang, Dawie Roodt, and Nikiwe Bikitsha are expected to address these future leaders and guests at these ceremonies.

Addressed by the best

On the guest speaker line-up, we have Dr Gallie, a School and District Turnaround Strategist and education activist, who has been identified as one of the 10 Most Impressive Public Leaders for 2015 by the UFS Vice-Chancellor and Rector, Prof Jonathan Jansen. The former Head of Operations, Human Resources and Information and Communication Technology at the South African Council for Educators (SACE) has had more than 30 years of experience in education.

Dr Gallie and Dr Hatang will address graduates of the Faculties of Education, Health Sciences, Law, and Theology on 12 April 2016. Dr Hatang is the Chief Executive of the Nelson Mandela Foundation. In addition to being a founding member of the Advisory Council of the Council for the Advancement of the South African Constitution, Hatang has had the privilege of serving as the Head of Information Communications, and spokesperson for the South African Human Rights Commission as well as Director: South African History Archive at Wits University.

Dawie Roodt, founder, director, and chief economist of the Efficient Group, will speak at the Faculty of Economic and Management Science ceremony on 14 April 2016. This nationally-renowned economist boasts 30 years of experience in monetary and fiscal policy, and is one of the most referenced authors. In 2013, he published Tax, Lies and Red Tape.

As one of South Africa’s leading journalists, Nikiwe Bikitsha will draw on her 20-year career in radio, television, and journalism to address the Faculty of the Humanities graduates on the final day of graduations. Through her passion for Africa’s economic development and women empowerment, the co-founder and CEO of Amargi Media has been a successful Programme Director for UN, IMF and AU-related events.

Details of event

Dates: 12, 13, 14, 15 April 2016

Times: 09:00 and 14:30

Venue: Callie Human Centre, Bloemfontein Campus, University of the Free State

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