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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

Students receive hands-on crime scene investigation training
2016-09-02

Description: Crime scene investigation training Tags: Crime scene investigation training

Ntau Mafisa, a forensic science honours student
at the UFS, and Captain Samuel Sethunya from
the SAPS Crime Scene Management in
Bloemfontein.
Photo: Leonie Bolleurs

With murder and robbery rates on the rise, the Forensic Science Programme of the Department of Genetics at the University of the Free State is playing a key role in training South Africa’s future crime scene investigators and forensic laboratory analysts.

According to the Institute for Security Studies (ISS), murder and aggravated robbery rates for 2014/2015, as recorded by the South African Police Services (SAPS) have increased. Incidents of murder increased by 4.6% in the period from 2013/2014 to 2014/2015 and aggravated robbery increased by 8.5 % in the same period. The ISS is an African organisation thant enhances human security by providing independent and authoritative research, expert policy advice and capacity building.

Dr Ellen Mwenesongole, a forensic science lecturer at the Department of Genetics, said the university was one of a few universities in South Africa that actually had a forensic science programme, especially starting from undergraduate level.

Crime scene evaluation component incorporated in curriculum
As part of its Forensic Science Honours Programme, the department has, for the first time, incorporated a mock crime scene evaluation component in its curriculum. Students process a mock crime scene and are assessed based on how closely they follow standard operating procedures related to crime scenes and subsequent laboratory analysis of items of possible evidential value.

The mock crime scene forms part of a research project data collection of the honours students. In these projects students utilise different analytical methods to analyse and distinguish between different types of evidence such as hair fibres, cigarette butts, illicit drugs and dyes extracted from questioned documents and lipsticks.

Students utilise different analytical methods to analyse
and distinguish between different types of evidence.

This year, the department trained the first group of nine students in the Forensic Science Honours Programme. Dr Mwenesongole, who received her training in the UK at the University of Strathclyde in Glasgow, Scotland, and Anglia Ruskin University in Cambridge, England, said incorporating a crime scene evaluation component into the curriculum was a global trend at universities that were offering forensic science programmes.

Department of Genetics and SAPS collaborate
It is important to add this component to the student’s curriculum. In this way the university is equipping students not only with theoretical knowledge but practical knowledge on the importance of following proper protocol when collecting evidence at crime scenes and analysing it in the laboratory to reduce the risk of it becoming inadmissible in a court of law.

The Genetics Department has a good working relationship with the Forensic Science Laboratory and Free State Crime Scene Management of the Division Forensic Services of the SAPS. The mock crime scene was set up and assessed in collaboration with the Crime Scene Management Division of the SAPS. Although the SAPS provides specialist advanced training to its staff members, the university hopes to improve employability for students through such programmes.

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