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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

The silent struggles of those with invisible disabilities
2016-12-13

Description: Dr Magteld Smith, invisible disabilities Tags: Dr Magteld Smith, invisible disabilities 

Dr Magteld Smith, researcher and deaf awareness
activist, from the Department of Otorhinolaryngology
at the UFS.

December is International Disability Awareness Month. Despite equality before the law and some improvements in societal attitudes, people with disabilities are still disadvantaged in many aspects of their lives. They are more likely to be the victims of crime, sexual abuse, are more likely to earn a low income or be unemployed, and less likely to gain qualifications than people without disabilities.

Demystifying disabilities is crucial

Dr Magteld Smith, a researcher at the University of the Free State (UFS) School of Medicine’s Department of Otorhinolaryngology, says that often people think the term “disability” only refers to people using a wheelchair, etc. However, this is a misperception because some individuals have visible disabilities, which can be seen, and some have invisible disabilities, which can’t be seen. Others have both visible and invisible disabilities. There is an ongoing debate as to which group has the greatest life struggles. Those with visible disabilities frequently have to explain what they can do, while individuals with invisible disabilities have to make clear what they cannot do.

Invisible disability is an umbrella term that captures a whole spectrum of invisible disabilities and the focus is not to maintain a list of specific conditions and diagnoses that are considered invisible disabilities. Invisible disabilities include debilitating fatigue, pain, cognitive dysfunctions, mental disorders, hearing and eyesight disabilities and conditions that are primarily neurological in nature.

Judging books by their covers
According to Dr Smith, research indicates that people living with invisible disabilities often suffer more strained relationships than those with visible disabilities due to a serious lack of knowledge, doubts and suspicion around their disability status.

Society might also make serious allegations that people with invisible disabilities are “faking it” or believe they are “lazy”, and sometimes think they are using their invisible disability as an “excuse” to receive “special treatment”, while the person has special needs to function.

Giving recognition and praise
“One of the most heartbreaking attitudes towards persons with invisible disabilities is that they very seldom enjoy acknowledgement for their efforts and accomplishments. The media also seldom report on the achievements of persons with invisible disabilities,” says Dr Smith.

Society has to understand that a person with a disability or disabilities is diagnosed by a medical professional involving various medical procedures and tests. It is not for a society to make any diagnosis of another person.

Dr Smith says the best place to start addressing misperceptions is for society to broaden its understanding of the vast, varying world of disabilities and be more sensitive about people with invisible disabilities. They should be acknowledged and given the same recognition as people with visible disabilities.

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