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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

UFS experimental farm to be redesigned as a training facility

2004-10-25

Back fltr:
Dr Léan van der Westhuizen, Manager: UFS Sydenham Experimental Farm; Prof Herman van Schalkwyk, Dean: Faculty of Natural and Agricultural Sciences at the UFS and Councilor Thami Stander, Chairperson: Mangaung Municipal Portfolio for Agriculture and Rural Development

Front fltr:
Mr Hanz Nketu, Chairperson: Free State Legislative Committee on Agriculture and Mr Peter Frewen from the Free State Legislature

The Faculty of Natural and Agricultural Sciences of the University of the Free State will soon sign a tri-partite cooperation agreement with the National African Farmers Union (NAFU) and the Mangaung Local Municipality with the aim of providing training and mentorship to small-scale and emerging farmers, including those recently settled under the on-going land redistribution programme.

The agreement is part of the Faculty’s strategic plan to support the on-going reform process in the country, of which Black Economic Empowerment in Agriculture (Agri-BEE) is an important part. The Free State Provincial Department of Agriculture is also actively supporting this initiative.

Under the plan, the Faculty is redesigning its experimental farm, located about 12 kilometers south of Bloemfontein, as a training facility to build up skills in among others broiler and egg production, dairy farming, animal husbandry, piggery, sheep and goat production. The idea is to introduce a comprehensive package that empowers the small and emerging farmers and the local communities adjoining the farms through simultaneous investments in research, extension, and practical agricultural training.

Learnerships are also being drawn up to provide productive skills in order to contribute to addressing the national skills gap and enhancing opportunities for both self and wage employment.

The residents of the adjoining informal settlement known as Mangaung Phase II where unemployment is currently at extremely high levels are primary targets of this component of the project. The Faculty intends for this project to service the farming communities of the Free State Province and gradually spread to other Provinces in the country.

Having recognised this training programme as a potential instrument for achieving “a united and prosperous agricultural sector”, the Free State Legislature has shown considerable interest in the programme.

Following a preparatory visit to the farms by the Agriculture Committee of the Free State Legislature a request was made to the Faculty to host a larger visit by the Legislative Committees of the Free State, North West and Eastern Cape Provincial Legislatures on Monday 25 October 2004 and present details of the training programme.

The President of NAFU in the Free State Province, Mr Nox Nonkonyana, the Dean of the Faculty of Natural and Agricultural Sciences, Prof Herman van Schalkwyk, the Chair of the Mangaung Municipal Portfolio for Agriculture and Rural Development, Councilor Thami Stander, and the Chairperson of the Free State Legislative Committee on Agriculture, Mr M Nketu, will address the Legislators during the occasion.

Prof Herman van Schalkwyk

Dean: Faculty of Natural and Agricultural Sciences

University of the Free State, Bloemfontein

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
25 Oktober 2004

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