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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 Centenary celebrations come to an end

2005-02-03

OFFICIAL OPENING

The official opening of the UFS will take place on Friday 04 February 2005 at 09:00 in the Reitz Hall (Centenary Complex). Please note that this is a test and lecture free day. The Rector and Vice-Chancellor, Prof. Frederick Fourie will be the keynote speaker. Refreshments will be served at the Centenary Complex after the opening ceremony.

The historic Centenary photograph will be taken at 11:00 on the eastern side of the Red Square (CR Swart parking area). All staff members and students are invited to be part of this massive photograph.

Important

• There will be no parking allowed on the CR Swart parking area until 12:00 on Friday 04 February 2005, as a result of the photo session.

• All academic staff members are requested to wear academic dress on the day, seeing as staff members will depict the Centenary emblem on the photograph. Academic gowns may be collected from the Gown Store on Wednesday 02 - Thursday 03 February 2005 between 08:00 and 16:00. Gowns must be returned to the Gown Store after the photograph has been taken.

SERVICE OF DEVOTION

A special service of devotion will take place on Sunday 06 February 2005 at 18:00 for 18:30 in front of the Main Building on the Red Square. This is a special gathering of students, hosted by all the interdenominational groups on the UFS campus. The evening will be a celebration of praise, thanks and worship, followed by a message from Dr Wollie Grobler. The evening will conclude with song and fireworks.

Staff members and students are welcome to bring their friends and families to this special event.

Important

• Even though there will be chairs in front of the Main Building, staff members and students are requested to bring extra pillows and blankets to sit on.

• No persons or vehicles will be allowed on the eastern side of the Red Square or on the CR Swart parking area, due to the security requirements of the fireworks show.

• All members of the choir are invited to be part of the mass choir. Lyrics will be provided.

• All persons who attend this event are requested to bring a candle for the purpose of the mass choir.

• Special transportation arrangements will be made for all service workers to enable them to attend the service. If there is someone in your faculty, department or division who would like to make use of this service, please send an e-mail to Elize Rall (ralle.stg@mail.uovs.ac.za) no later than Tuesday 01 February 2005.

OTHER ACTIVITIES

• A reunion for all former SRC members of the UFS will take place on the campus, from 04 February to 06 February 2005. An interesting programme is being planned. For more information, please contact Nicolaas du Plessis on 084 955 0875.

• The annual Rag Procession will take place on Saturday 05 February 2005. For more information, contact the Rag Office at X 2718.

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