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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

Kovsie community pledge to advance equality and eradicate racism

2015-04-15

Photo: Johan Roux

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Speech by JC van der Merwe

On Monday 13 April 2015, the University of the Free State drew a line in history. Staff and students united in a singular vision: equality.

Since March 2015, the Institute for Reconciliation and Social Justice, together with the SRC, has launched the No-to-Racism/Yes-to-Equality Campaign across all three campuses with tremendous success. This campaign has now reached a high point at which the Kovsie community pledge their commitment to entrenching a culture of equality at the university. The first pledge ceremony took place on 13 April 2015 at the Bloemfontein Campus. Kovsies thronged to place their inked thumbprints on pledge posters in an inspirational show of solidarity.

“The key to transformation,” Prof Jonathan Jansen, Vice-Chancellor and Rector of the UFS, said, “is putting yourself in the shoes of the other person.” When you look past yourself and acknowledge others’ experiences, the world starts to look different. A pledge, Prof Jansen continued, is a solemn promise – not only to stop bad behaviour, but to go forward resolutely with good behaviour. “You do not change a campus, you do not change a country, without being courageous,” Prof Jansen said.

The message from Mosa Leteane, President of the Student Representative Council (SRC), echoed the same belief. “Today,” Leteane said, “the UFS takes a bold and courageous step toward equality.” This new generation, which includes young people from all races, has started a new revolution. A generation that says no to discrimination and yes to equality. “We cannot afford to be ignorant or indifferent,” Leteane urged.

The remaining two campuses will also have an opportunity to publically pledge their support on the following days:
Qwaqwa Campus: Wednesday 15 April 2015
South Campus: Friday 17 April 2015

To enable the university to go beyond dialogues and consultation towards active decision-making, a University Assembly will be held on Tuesday 28 April 2015. The assembly will serve as a space for critical engagement among all university stakeholders to focus on issues such as symbols, policies, practices, and curriculum. Staff and students are encouraged to submit matters for discussion to JC van der Merwe (vdmjc@ufs.ac.za) before 22 April 2015.

The No-to-Racism/Yes-to-Equality Campaign is aligned with the declaration made by the UFS Council in November 2014, in which it states that “the Council of the University of the Free State believes very strongly in the human dignity, equality, and freedom of all people.”

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