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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

Meet the person behind the new #FaceOfFacebook

2016-05-19

Reuben “R” Davids

The votes have been counted, and we have a winner! After much excitement and a fairly close contest, Reuben “R” Davids emerged victorious from the top five contestants selected by our panel of judges. We chatted with the vibrant and enthusiastic Mr Davids to get a sense of the person who will be our Facebook ambassador for the next year.

What does the “R” stand for?

“Interestingly, some also know me as Vuyo. It's not a name on my birth certificate or anything; I just really like it. And I also coincidentally found out that it means “joy/happiness”, and I do enjoy being happy.”

What is your field of study, and how far along are you?

“I am pursuing a career in the economics field as a third-year BCom Accounting student in the Faculty of Economic and Management Sciences here at the University of the Free State.”

Are you originally from Bloemfontein?

“Yes, born and bred. I've been a Bloem Kid since day one.”

How is it that you ended up here, studying at the UFS?

“The UFS has always been one of my favourite universities. During my high school period, I was constantly exposed to people from my neighbourhood as well as schoolmates who performing excellently here at UFS, and it didn't go unnoticed. So I have always been drawn to the prestige that UFS carries.”

Which residence are you in, and what do you enjoy most about res life?

“I currently stay at home with the family, but for my first 2 years of study I resided at ConLaurês. What I enjoyed the most about res life is the freedom and independence that you get. It also enables one to participate in campus life much easier. It actually helps one grow and mature into the adult you're supposed to become with all the challenges and responsibilities that you're faced with.”

What do you hope to accomplish during your term as the #FaceOfFacebook?

“I enjoy the art of presenting (as well as being an MC), and being the #FaceOfFacebook will enable me to exercise that skill. Also, my interaction skills will be exercised. That being said, I would like to have those skills developed further by the end of my term as #FaceOfFacebook.”

What is your motivation in your studies, in taking part in this contest, and in life?

“I am an adrenaline junkie. I like taking on challenge; so what I normally do is I set a certain goal for myself and then take on the challenge to achieve that goal. That's my number one motivating factor. And I think I'm also inspired by the failures and successes of myself and of those around me.”

Reuben has already been featured in a #PeopleOfKovsies post on Facebook, and appeared in his first Facebook video covering the Open Day on our Bloemfontein Campus.

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