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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 Department of Architecture Building receives SAIA Award

2014-08-21

The South African Institute of Architects (SAIA) conferred a national merit award on renovations and additions to the DHET UFS Department of Architecture Building. The UFS is very proud of this award.

The building, which was completed in 2012, was designed by Typology Architects' director, Henry Pretorius. Pretorius is also the Head of the Department of Architecture at the UFS.

“The merit award by the South African Institute of Architects, which was presented on 1 August 2014 at the International 2014 UIA congress (held for the first time in South Africa), is a great honour. Not only does the award recognise my work as an architect, it also brings back a certain degree of pride to the Free State and especially the UFS’s Department of Architecture,” says Pretorius.

The SAIA Awards Programme runs over two years to coincide with the presidential term of office, starting with the Regional Awards for Architecture during the preceding year.

A total of forty-nine (49) entries for varying buildings were received from the regions. The project range included residential projects, new public buildings, restoration of heritage projects and an academic research project.

From these submissions, fourteen (14) projects received merit awards, of which eight (8) projects received excellence awards.

The adjudication panel comprised:
• Sandile Ngonyama: SAIA President
• Paul Kotze: Architect, planner and academic from WITS
• Malcolm Campbell: Architect from ACG Architects in Cape Town
• Annemarie Meintjies: Deputy editor of VISI magazine, representing a prominent member of the public
• Peter Kidger: representative of Corobrik, sponsor of the awards.

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