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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 in top four in Global Business Challenge

2015-05-06

Photo: Mark Steenbok (Bloemfontein Courant)

Christiaan Paulsen (team leader), Sias Conradie, Jannie de Wet and Frikkie Jacobs.

Four Kovsies in the Department of Mathematical Statistics and Actuarial Sciences are one of the top four teams in the Chartered Institute of Management Accountants’ (CIMA) Global Business Challenge. 178 teams registered to participate in the competition.

Team Bernoulli from the UFS will compete against two teams: one from the University of Pretoria and one from the Chartered Accountant Training Institute in Sandton. The winning team will win a trip to Poland, Europe to represent their university and country at the 2015 global final.

This international business competition is for undergraduates around the world, designed to bring out the best in the young business leaders of tomorrow.

Team leader, Christiaan Paulsen, said: “We are overjoyed to be in the final. However, our true success is in what we learned along the way”.

The team has to present a business case study, showcasing their talent in business management. During this competition, the team has

learned to analyse and solve a real-life business case study;
-obtained first-hand experience of the skills required to be a business leader;
enhanced their team building skills; and
developed their presentation skills.

Students from Australia, Bangladesh, China, Ghana, Hong Kong SAR, India, Indonesia, Ireland, GCC, Malaysia, Myanmar, Nepal, New Zealand, Nigeria, Pakistan, Phillipines, Poland, Russia, Singapore, South Africa, Sri Lanka, Thailand, Ukraine, United Kingdom, Vietnam, and Zambia are taking part in the competition.

This competition is organised by CIMA in conjunction with Barclays.

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