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21 April 2023 | Story Leonie Bolleurs | Photo Supplied
Dr Katlego Mashiane
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

Deborah Meier on Education and Social Justice
2012-06-18

 

With Deborah Meier is, from the left: Brian Naidoo, Senior Lecturer: Department of English; and Rèné Eloff, Research Assistant at the International Institute for Studies in Race, Reconciliation and Social Justice.
Photo: Johan Roux
18 June 2012

Celebrated author and educator, Deborah Meier, recently visited the university. Meier, ranked among the most acclaimed leaders of the school reform movement in the United States, spoke about democracy and education at a Critical Conversation hosted by the International Institute for Studies in Race, Reconciliation and Social Justice.

Speaking from her experience of the United States education system, Meier said that she had always been primarily concerned by the fact that schools were not engaging children in discussions about important and difficult topics such as democracy, race and class. As far as democracy was concerned, Meier pointed out that most schools viewed the occasional voting exercise as a lesson in democracy. However, as far as she was concerned, voting was the least important aspect of democracy. She admitted that democracy was almost impossible define, but in her view engaging with this difficulty was, in itself, an important democratic act – an act which could and should find its rightful place in the classroom.

Meier pointed out that children were effectively “incarcerated” for the six hours they spent at school every day. She expressed her grave concern about the fact that this time was not used to nurture and develop the considerable energy and creativity that young children had. Meier envisioned a school that could rise up to this challenge. At one point she mused, “Did I miss something? Did we invent some other institution that was taking on this responsibility?”

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