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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

Valuable advice for businesses in difficult times
2013-04-15

 

Prof Helena van Zyl, Director of the Business School, and Dr Reuel Khoza.
Photo: Stephen Collett
15 April 2013


Dr Reuel Khoza, Chairman of the Nedbank Group, shared the group’s valuable rules for managing a bank in difficult times in an MBA lecture on the Bloemfontein Campus. Dr Khoza is a visiting professor at the UFS Business School.

He focused in the lecture on the group’s business and leadership model and highlighted some do’s and don’ts:

  • Do not surprise your stakeholders on the downside – communicate transparently, particularly when there is bad news.
  • Retrenching staff to contain costs should be a last resort – the damage to corporate culture from retrenchments is immense. Follow and support your customers – get as close to them as possible because business changes slowly, but customer behaviour can change in an instant.
  • Integrated central capital and funding management.
  • Entrench well-established reporting, KPIs and measurement systems.
  • Ensure strong independent risk management.
  • Manage your cost base – anticipate downturns and re-base your costs to avoid crisis-cost management.
  • Take advantage of opportunities – an economic downturn creates a situation where valuations fall and assets are sold off, which can be a great opportunity for acquisitions.
  • Keep innovating – innovation does not have to be a costly exercise, as the right culture can promote and encourage experimentation and collaboration.
  • Whatever you do – avoid a price war, as expedient pricing decisions may hurt the business in the longer term.

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