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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

UFS staff to get a minimum of 4,71 percent salary increase

2005-11-25

The University of the Free State (UFS) management and trade unions have agreed on a minimum of 4,71 percent salary increase for 2006 as well as a once-off non-pensionable bonus of R1200 payable in December 2005.

The agreement was signed today by representatives of the UFS management and the trade unions, UVPERSU and NEHAWU, in Bloemfontein.

Prof Niel Viljoen, Chief Director: Operations at the UFS and chairperson of the UFS Council’s representatives, and Prof Johan Grobbelaar, chairperson of the joint Union Forum, said: “The bonus is payable in December 2005 in recognition of the role that staff played during the year to promote the UFS as a university of excellence.”

He said the intention is to pass the maximum benefit possible on to staff without exceeding the limits of financial sustainability of the institution.
For this reason the negotiating parties reaffirmed their commitment to the Multiple-year Income-related Remuneration Improvement Model used as a framework for negotiations.

Proff Viljoen and Prof Grobbelaar said one of the factors that influence the model and therefore the negotiations is the level of subsidy the UFS receives from the government.

“As the state subsidy level is unfortunately not yet known, remuneration could vary several percentage points between a window of 4,71 and 5,5 percent. Should the state subsidy be such that the increase would fall outside this window then the parties will renegotiate.”

Proff Viljoen and Prof Grobbelaar said the R1200 bonus is payable to staff members who were in the employ of the UFS on UFS conditions of service on 21 November 2005 and who assumed duties before 1 October 2005. There are however some exceptions.

The agreement signed today also provides for restructuring funds of R752 000 to address partial backlogs in support services, including an increase in the medical allowance of 640 staff members.

The implementation date for the salary adjustment is 1 January 2006, but could be implemented on a later date due to logistical arrangements.

Proff Viljoen and Prof Grobbelaar said the UFS and unions could reach an agreement despite the declining phase in income and the generally more difficult financial environment in which universities operate.

Prof Grobbelaar said salary negotiations are never easy, but the model is an important tool. The model made it possible to tie up salary negotiations for November 2006. “This is unique for any higher education institution.”

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
24 November 2005

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