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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

Official opening: UFS earmarks R10-million to support national priorities

2006-02-06

The University of the Free State (UFS) is to align key areas of its academic and research efforts with national priorities through the introduction of five strategic clusters which would be funded by seedmoney of R10-million in 2006.

Speaking at the Official Opening of the UFS on Friday (3 February 2006), the Rector and Vice-Chancellor, Prof Frederick Fourie, said the academic and research work that will be done in the five strategic clusters would contribute to the development of Mangaung, the Free State, South Africa and Africa.

“It makes sense to concentrate the university’s human resources, our infrastructure, financial resources and intellectual expertise to ensure that the UFS makes a contribution to the country and the African continent,” Prof Fourie said.

“Strategic clusters will be organised on the basis that these areas of knowledge could become in the short term the flagships of the UFS, meaning those areas where the university currently has or in the very near future is likely to have some competitive advantage,” Prof Fourie said.

According to Prof Fourie, this strategic-cluster approach will be in line with the approach being designed by the National Research Foundation (NRF) to take national priorities into account and would enhance the quality of scholarship at the UFS.

The five strategic areas in which research and academic investment at the UFS will be clustered are the following:

Enabling technologies / Technology for the future;
Food production, quality and food security for Africa;
Development;
Social transformation;
Water resource and ecosystem management;

“Such strategic clusters are understood not only as research areas but as areas that also encompass strong undergraduate and particularly postgraduate teaching and a potentially solid scientific basis for service learning and community service research,” Prof Fourie said.

Within each of these clusters specific niche areas will be identified. Clusters could focus on one or more aspects of a particular discipline or could involve more than one discipline in researching a particular issue.

He said not all academic work and research being done at the UFS would be clustered in this way. Sufficient resources and support have been put in place for general research excellence in the past five years.

“Some of the spin-offs can have an important impact on industrial development, for example in the chemicals industry and may also create a basis for cooperation with provincial, national and international partners,” he said.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
5 February 2006

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