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Curiosity about environmental changes drives Dr Katlego Mashiane’s PhD research

21 April 2023 | Story Leonie Bolleurs | Photo Supplied

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

SRC Consultation desk

2015-04-20

In an era where woman are consistently escalating up the echelons of power, this universal phenomenon is also making waves on the Bloemfontein Campus of the University of the Free State. As different citizens would recognise First lady Michelle Obama, Public Protector Thuli Madonsela, German Chancellor Angela Merkel and United Nations Ambassador Angelina Jolie, so it is also with Student Representative Council Secretary General, Dineo Motaung. She is among a handful of ladies within the student leadership who cherish her responsibilities diligently for the interests of human beings.

The SRC Consultation Desk is an official space created by the office of the Secretary General, aimed at being of service to students alongside the students’ academic pursuit. Inspired by Ubuntu, meaning ‘I am what I am because of who we are’ comes the task of cultivating and nurturing the essence of who we are, through constructive and honest dialogue between students and the university staff. It is by talking to one another that we will establish an environment that permeates our uniqueness and pollinates our consciousness with awareness that would cause us to act in unison in propagating the vision of the university.

Toward this end, the Secretary General has commissioned two SRC members to various stations every Monday and Wednesday, to interact with both students and staff. Please find the schedule reflected below. It is hoped that through this engagement, problems will not simply be identified, but that practical and feasible solutions will be offered.

“Through the SRC Consultation Desk I hope to see the manifestation and spirit of Ubuntu on campus by the time my term ends. With all that said, I am available for any concerns,” said Motaung.

Monday 20 April 2015, 12:00-13:00

SRC Accessibility and Student Support: Louzanne Coetzee

Station: Thakaneng Bridge

Wednesday 23 April 2015, 14:00-15:00

SRC Media, Marketing & Laison: Lethabo Maebana

Station: New Computer Labs (Entrance door)

Wednesday 29 April 2015, 14:00-15:00

SRC Student Development and Environmental Affairs: Victor Ngubeni

Station: Sasol Library (Opposite Deli)

Monday 4 May 2015, 14:00-15:00

SRC Secretary General Dineo Motaung

Station: Amphitheatre

Wednesday 6 May 2015

SRC Student Media: Masingi Sam

Station: Sasol Library (close to Deli)

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