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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

First-years welcomed to the Kovsie family

2017-01-30

Description: Prof Francis Petersen Tags: Prof Francis Petersen

Newly appointed Vice-Chancellor and Rector of the
University of the Free State, Prof Francis Petersen during
the first-year welcoming.
Photo: Charl Devenish

“How do you like my new blazer? Do you think these stripes suit me?” These were the words of the newly appointed Vice-Chancellor and Rector of the University of the Free State, Prof Francis Petersen, as he took to the stage in his #ProudlyKovsies blazer to welcome the 2017 first-years to the Kovsie family.

The event, which was also the start of the first-year Gateway Programme, took place on Saturday, 21 January 2017, and saw first-years and their parents make their way to the Red Square on the Bloemfontein Campus where they were formally welcomed.

UFS to produce world graduates
As newcomers, Prof Petersen wanted the fresh faces to feel welcome, to feel a sense of belonging. “You are now a Kovsie, and we want you to experience that Kovsie life until you graduate,” he told them.

During his speech, Prof Petersen reassured parents that the academic year would be completed and that the UFS would operate as an institution. He encouraged the students to absorb and gain knowledge and said the university would strive to ensure excellent knowledge. “At the UFS, we want to produce graduates for the world, and we need to ensure that we use our knowledge to uplift society,” he said.

Use differences to benefit from one another
KovsieFM presenters, Tshwaro Thothela and Gontse Choane played host to the gathering and Pura Mgolombane, Dean of Student Affairs, encouraged the first-years to use their differences to benefit from one another and to learn from this opportunity. “Make sure that the good that you do is for yourself, for others and for the university,” he said.

Prof Nicky Morgan, Acting Vice-Chancellor and Rector, welcomed Prof Petersen, his wife Cheslyn, and their two sons, Curtis and Clayton, to the UFS.

The newcomers also had an opportunity to visit their respective faculties and get to know the staff and facilities better.

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