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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

UFS awards centenary bonuses to staff

2004-11-25

The University of the Free State (UFS) will award a special Centenary bonus of R3000 (three thousand rand) to all qualifying staff in December 2004 .

As far as general salary increases for 2005 are concerned, plus an inflation- based linked salary increase adjustment of 1,4 percent and a further 4,6 percent salary increase as a final dividend from the financial turn-around strategy that began in 2000, will be instituted .

The final percentage salary increase is dependent on whether the expected government subsidy, of which the UFS must still receive notification from the Department of Education, is received.
, if the expected government subsidy realizes .
In addition, the salaries of service workers in low remuneration groups, as well as full professors have been adjusted retroactively to 1 January 2004. This restructuring was agreed upon to address market-related backlogs for these two groups , who display the biggest backlog relative to comparable institutions . A similar professional bench-marking exercise for support service staff has not been finalised.

This agreement was signed on Wednesday 24 November 2004 between the UFS Council and the UVPERSU-NEHAWU Joint Forum regarding salary negotiations for 2005.

“With this Centenary bonus and the significant above-inflation salary increase payment the UFS wants to pay recogni se tion to the sterling role that staff

have played in a difficult period of transition and fast growth and the contributions that they made to promote excellence at the UFS to a

university of excellence,” said Prof Frederick Fourie, Rector and Vice-

Chancellor of the UFS.

He said that the extra payment of this final 4,6 percent increase due to benefit from the financial turn-around strategy means that in real terms average salaries at the UFS had increased over the past 3 to 4 years by well over more that the 15 percent target that was set initially.

According to Prof Fourie all staff members who were in the employ of the UFS on UFS conditions of service on 15 November 2004 and who assumed duties before 1 October 2004, will qualify for the bonus. The same criteria will apply as for the 2004 bonuses.

However, there are some exceptions who do not qualify for the bonus eg learning facilitators, professors extraordinary, affiliated lecturers, departmental assistants, laboratory assistants, student help, all staff appointed for less than 20 hours per week, persons who are paid on a claims basis etc.

“Although the UFS’s actual subsidy amount is not yet known, an increase of 6,6 % in the total remuneration costs was budgeted for in the budget serving before the Executive Management and Council. It was further agreed with the UVPERSU-NEHAWU Joint Forum that the first 6 % increase will be used as general pensionable salary adjustment with implementation date 1 January 2005,” said Prof Fourie.

According to Prof Fourie the agreement also applies to all staff members of the Qwaqwa and Vista campuses whose conditions of service are already aligned with those of the main campus.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
25 November 2004

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