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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

First-year wellbeing a top priority at Harmony residence

2017-06-07

Ladies from the House Harmony, a unique residence
that focuses on first-years’ experience.
Photo: Supplied

A unique residence that focuses on first-years’ experience, is exactly what Harmony sets out to provide for all first-year students at the University of the Free State.

A residence focusing on mentoring

Entering the adult world can be a daunting experience, but Harmony, unlike other residences on campus, focuses on mentoring. Harmony came to life in 2014 and has assisted many first-years in adapting to the university environment.

According to Pulane Malefane, Residence Head of House Harmony, they have witnessed a significant change in the pass rate of first-year students. “We have realised that first-years gain confidence much quicker than in other residences where they still need to find their way around seniors,” she says.

Adapting to the varsity environment

Harmony makes use of a Residence Assistants (RA) system, not Residence Committees (RC). The RA stay in corridors with their mentees in order to have close contact with them. An RA’s primary role is to be a mentor to first-years and also expose them to different co-curriculum activities on campus. They assist them in adapting to the varsity environment quicker, so as to be able to focus and concentrate on their academics.

Nicole Rabe, RA First-years, says the Harmony belles never cease to amaze her. “Watching these first-years grow from the high school girls that arrived at the start of this year, to the independent women they are now, has truly been a blessing.”

Malefane mentions that they intentionally try to place students from one faculty in the same corridor. In that way, mentors and residence assistants are in close proximity to them. “We have study rooms in each and every corridor of Harmony, making it easy for students to study close to their rooms at any time,” she says.

Phathutshodzo Nekhavanmbe, a first-year LLB student, says she could not have asked for a better house to be placed in. “The Harmony experience has been great so far, as the people living there are approachable and eager to lend a helping hand.”

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