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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

Co-architect of peace and reconciliation in Northern Ireland to present Annual Reconciliation Lecture today

2015-03-03

Colm McGivern, Director of the British Council in South Africa

To emphasise the University of the Free State’s Human Project, the UFS has positioned itself as an institution that is recognised across the world not only for excellence in academic achievement, but also in human reconciliation. The Annual Reconciliation Lecture, whose organising committee is chaired by Prof Pumla Gobodo-Madikizela, is a unique and major initiative to enhance this important vision of our university.

This year, Colm McGivern, Director of the British Council in South Africa, will present the Fourth Annual Reconciliation Lecture at the Centenary Hall on Thursday 5 March 2015.

Colm McGivern was brought up in Northern Ireland at the height of the conflict that has come to be known as the ‘Troubles.’ His early experiences of conflict, sectarianism, and living in a divided society have driven his career, and his personal commitment to peace-building and promoting reconciliation. He was a student leader at Queen’s University in Belfast during the time of the first IRA Ceasefires in the 1990s, and then worked in the Higher and Further Education sectors, and at a community level with peace-building groups across Northern Ireland and internationally. He was Director of the British Council in Northern Ireland for four years and, in that role, facilitated discussions between divided communities before and during the Ceasefires and Peace Process, with a particular focus on bringing young people together across Ireland.

In his role as Director of the British Council, McGivern has created thousands of cultural and educational connections between the UK and SA. Every year, he ensures that young South Africans can get access to educational and cultural opportunities that are life-changing while deepening their connection with the UK.

A highlight of this year’s lecture will be a performance by musicians from the Odeion School of Music, Tumi Ntantiso (soprano), Bertha Menyatso (mezzo-soprano), Malefetsane Mofokeng (baritone), and Cezarre Strydom (piano). They will be performing works from ‘Tales of Hoffmann’ by Jacques Offenbach, among others.

Members of the public and media are welcome.

RSVP: Jo-Anne Naidoo, e-mail: Naidooja@ufs.ac.za

Date: Thursday 5 March 2015
Time: 17:30 (please be seated by 17:15)
Venue: Centenary Complex, Bloemfontein Campus

The event will be streamed live on: http://livestream.ufs.ac.za/

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