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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

Staff, students, learners and the public opened their hearts during R5 coin-laying ceremony

2012-07-17

Photo: Sonia Small
18 July 2012

Amidst a festive atmosphere on the Red Square in front of the Main Building on the Bloemfontein Campus of the University of the Free State (UFS), students, staff, learners and members of the public came together to make their contribution to stop hunger.

In celebration of former president Nelson Mandela’s birthday, the university collected money and food in the form of a coin-laying ceremony, the packing of food parcels, and a message delivered by Emeritus Archbishop Desmond Tutu in aid of the university’s No Student Hungry (NSH) campaign and Bloemfontein Child Welfare.

Representatives from schools in Bloemfontein donated their R5 coins, together with university staff, students, members of the public, and employees of Pick n Pay Hyper. Money collected at the coin-laying ceremony will be shared between NSH and Bloemfontein Child Welfare.

According to Ms Grace Jansen and Ms Carin Buys, patrons of NSH, the more than R42 000 that was collected will be donated to Bloemfontein Child Welfare in an effort by NSH to give back to the community. “We are impressed by the number of people who showed up and by the fact that people opened their hearts and pockets to give,” said Ms Buys.

Thirty employees of Pick n Pay Hyper in Bloemfontein were also present and packed 1 833 food parcels (equivalent to 11 000 meals). This forms part of a Pick n Pay initiative in cooperation with Stop Hunger Now that is being held countrywide today.

In total, 88 000 meals will be distributed in six cities in South Africa today. The 11 000 meals in the Free State have been donated to the university and according to Ms Jansen a social worker at the UFS will distribute it to other needy students. These are students who do not receive bursaries from NSH at the moment. Every food parcel contains rice, dried vegetables, soya, and vitamin and mineral enriched powder.

The university was honoured to have Emeritus Archbishop Desmond Tutu as the speaker at the event. He attended a dialogue in the Series of Dialogue between Science and Society today at the university where he took part in a conversation with Profs. Mark Solms and Pumla Gobodo-Madikizela as part of the Global Leadership Summit.

He made a special appearance at the university’s Nelson Mandela Day festivities. His message was simple but inspiring: “Everyone has, just like Madiba, the capacity to change lives. I hope there are people present who can say that they want to improve someone else’s life. You have the chance to make South Africa a country where no one goes to bed hungry. Help us to make South Africa a country where we have compassion for each other and care for each other”.

The UFS would like to thank the following schools for their contributions:

Grey Kollege Primêre Skool
Grey Kollege
St Michael's School for Girls
Hoërskool Jim Fouché
Hoërskool Fichardtpark
Hoërskool Sentraal
Navalsig High School
HTS Louis Botha
Eunice High School

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