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Curiosity about environmental changes drives Dr Katlego Mashiane’s PhD research

21 April 2023 | Story Leonie Bolleurs | Photo Supplied

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 students encouraged to attend UFS welcoming function

2006-01-12

The University of the Free State (UFS) will host a welcoming function for all new first-year students and their parents on Saturday 14 January 2006 in the Callie Human Centre on the Main Campus in Bloemfontein.

The function starts at 11:00 and will be addressed by the Rector and Vice-Chancellor of the UFS, Prof Frederick Fourie. UFS staff will also be available to provide vital information to first-year students on academic matters.

According to Mr Vernon Collett, Registrar: Academic Student Services at the UFS, Saturday’s welcoming function can assist students and parents by providing vital information on the many high quality academic learning programmes on offer at the UFS in six faculties.

“If students and parents have this information it will make the registration process, which starts next week Tuesday 17 January 2006, much smoother,” Mr Collett said.

The UFS has split the registration process into various categories of students and Mr Collett appealed to all students to adhere to the dates and times which apply to them as a one-stop service will be available so as to avoid unnecessary delays in the registration process.

The registration of first-time entering first-year students who applied before 30 November 2005 to study at the Bloemfontein Campus will take place from Tuesday 17 January 2006 at the Callie Human Centre.

Senior undergraduate students (that is, students entering their second or later year of study) may register from 23 January 2006.

Postgraduate students, first-time entering first-year students and other students who applied for admission to the main campus after 30 November 2005 must register at the Callie Human from 2 February 2006.

Late applications will be accepted until Wednesday 25 January 2006 at the Information Centre on the Main Campus’ Thakaneng Bridge. These applications will be regarded as pending and will be processed as places become available on the programme the student has applied for,” said Mr Collett.

Vista Campus:
The Vista Campus in Bloemfontein – which was incorporated into the UFS in January 2004 – no longer accepts applications from first-year students. Such prospective students had to apply to the UFS Main Campus. Students who had been registered on the Vista campus last year must register at the Vista Campus on the same dates as applicable on the Main Campus.

Qwaqwa Campus:
At the Qwaqwa Campus of the UFS, all first-time entering first-year students must report on Thursday 19 January 2006, after which the registration of these students will take place according to a specific programme. The official welcoming functioning for new first-years at the Qwaqwa campus of the UFS will take place on Saturday 11 February 2006 at 08:00 in the Rolihlahla Mandela Hall on the Qwaqwa Campus.

Mr Collett appealed to first-year students who have applied to study at the Qwaqwa Campus and their parents to attend this function which fulfils the same role as the one held on the Bloemfontein Main Campus.

Detailed information on the dates and times of registration for the various faculties and academic learning programmes is available on the UFS website at www.uovs.ac.za. Prospective students may also call the Main Campus in Bloemfontein on (051) 401-3000 or the Qwaqwa Campus on (058) 718-5000 for more information.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
10 January 2006

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