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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 presents first Beyers Naudé Memorial lecture

2010-09-16

At the Beyers Naudé Memorial lecture were, from the left: Prof. Jonathan Jansen, Rector and Vice-Chancellor of the UFS; Rev. Cedric Mayson; and Mr Kgotso Schoeman, Chief Executive Officer of Kagiso Trust.
Photo: Dries Myburg

The seventh Beyers Naudé Memorial lecture was presented for the first time at the University of the Free State (UFS) this week. This lecture that is presented at a different university each year took place on the Main Campus of the UFS in Bloemfontein this year. Rev. Cedrick Mayson presented the lecture with under the theme: Crafting a legacy.

According to Rev. Mayson more deeply rooted forms of suppression came forward after the democratic elections in 1994. Liberation from apartheid was, according to Mason, very superficial. The poor were still severely suppressed at economic, political, cultural, religious and environmental level. “We have to apply Beyers Naudé’s legacy of liberation in these areas,” Rev. Mayson declared.

“The system according to which the rich become wealthier and the poor become poorer must be replaced by a system where everybody can have enough. This is only possible with the insight of the oppressed.

“The government and the opposition are dominated by people who seek advantage for their own gain. Regardless of democratic slogans and some enlightened individuals’ rules against corruption and violence, we lack the political will to engage in the transformation of the whole world for the good of all earthlings,” said Rev. Mayson.

According to him, consumer culture has become a fine-tuned instrument for keeping people incomplete, shallow and dehumanised.

“Religions are self-centred. Leaders from most of the religious groupings criticised apartheid but they never joined the struggle to assist in demolishing apartheid. It appears as if religious institutions are not able to address the causes of poverty because they themselves are too rich and too powerful,” said Rev. Mayson.

He ended with the following words: “What we need is a leap of faith. Beyers knew that. The world is waiting for people to claim their legacy and to accomplish a post-religious secular spirituality of ubuntu.”

Rev. Mayson is a former Head of Religious Affairs of the ANC. He had also been a former staff member of the Christian Institute before it was banned. Furthermore, he was the Editor of Pro Veritate. Before he retired, he had also been involved in the South African Council of Churches and the World Conference for Peace.

The memorial lecture, a collaborative effort of the UFS and Kagiso Trust, endeavours to involve South Africans in dialogue about issues that affect our nation. This year the lecture was presented at the UFS for the first time and it will take place on the Qwaqwa Campus of the UFS next year.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za
16 September 2010

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