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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

Report card for UFS outlines major achievements

2005-02-04

Staff at the University of the Free State (UFS) have received above-inflation increases in remuneration averaging 18,2 percent since the year 2000, according to the Rector and Vice-Chancellor, Prof Frederick Fourie.

Delivering a keynote speech at the Official Opening of the UFS today, Prof Fourie gave a report card for the UFS which he said indicated significant progress in salaries and promotions as well as capital expenditure and infrastructure development on the campus.

“The aggregate extra earnings of staff (money in their pockets above inflation) from 2000 to 2005 amount to R75 million in salaries. This is the result of the hard work of all staff and we pay tribute to them,” he said.

Prof Fourie said that several categories of staff are better off than before the financial turn-around strategy was implemented in 2000 which aimed to make the UFS a financially sustainable campus.

The lowest paid workers and professors had received an additional structural correction, which gave professors at the UFS a 27% above-inflation increase (on total remuneration package) since 2000.

He said there had also been a dramatic increase in promotions to associate professor and full professor during the last 6 years.

From 1999 to December 2001, there were only 9 promotions to associate professor. From January 2002 to January 2005, there were 37 such promotions to associate professor, four times as many.

Regarding promotions to full professor, from 1999 to December 2001 there were 7 promotions. From January 2002 to January 2005, there were 31 promotions to full professor, more than four times as many.

“We have also created a new category of senior professor to give due recognition to the outstanding work of our leading academics in many fields,” Prof Fourie said.

The UFS has introduced numerous new and innovative learning programmes, together with an increasing number of community service modules which enhanced the UFS as a leader in service learning and helped to make it a university engaged with its surrounding community.

According to Prof Fourie the number of support staff had also grown along with the professionalisation of the support services.

He said management was aware that there still several challenges regarding staff overload and staff development but that these were being addressed

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
4 February 2005

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