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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

Three OSM students selected for the 2013 World Youth Symphony Orchestra

2013-01-25

Carmi Nel	Elsabe Raath
Maja van Dyk

25 January 2013

Three students from the University of the Free State’s Odeion School of Music (OSM) have proved their mettle. Carmi Viljoen (violin), Elsabé Raath (viola) and Maja van Dyk (viola), have been accepted into the prestigious World Youth Orchestra – an orchestra known worldwide for its quality and the prix de corps itadvances between nations.

Musica Europa, an Italian cultural association, founded the World Youth Orchestra (WYO) in its present guise in 2001. It has close ties with UNICEF and its mission is to combine music with social activities from cultures all over to world in order to enrich the cultural life of all.

Rigorous auditions are held which require applicants to upload video recordings onto a website (Vimeo). An international board of adjudicators subsequently listens to these recordings and select the best.The three OSM students were good enough to make the grade.

These three musicians are also members of the Free State Symphony Orchestra, as well as the MIAGI orchestra that toured Europe successfully last year. They are also outstanding chamber musicians. Carmi and Elsabé, as members of the Junior Odeion String Quartet, have shown that they are on par with international standards and have toured The Netherlands. In 2012, Maja van Dyk had been selected to perform as soloist with the National Youth String Orchestra under the baton of Swedish conductor and violinist, Fredrik Burstedt.

They first heard of the possibility of playing for the WYO through Anmari van der Westhuizen, lecturer at the OSM. Margarite Spies from the KZN Philharmonic Orchestra (KZNPO) had contacted her in search of worthy candidates. A scant three weeks later, they received the good news of their inclusion.

The orchestra, with representatives from five continents, will be touring South Africa this year and no less than nine South Africans have been included. The tour kicks off in Durban, followed by performances in East London, Plettenberg Bay, George, Knysna, Stellenbosch, with a grand finale in the Cape Town City Hall.

Works that will be performed include ‘’Romeo and Juliet’’ by Prokofiev, the irrepressible “Carnival Overture” by Dvorák, Barber’s ‘’Adagio for Strings’’ and part of Mahler’s majestic Fifth Symphony, all under the baton of the dynamic Josep Vicent.

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