Latest News Archive

Please select Category, Year, and then Month to display items

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

Alumni Voices heralds in festive season with Karl Jenkins production

2013-11-20

The Alumni Voices Chamber Choir, affiliated to the Alumni office of the University of the Free State, heralds in the festive season with a Christmas production with the Drakensberg Boys’ Choir.

Date: 23 and 24 November 2013
Time: 19:30 (23 November 2013)
16:00 (24 November 2013)
Venue: Odeion
Cost: R120

The production by the two choirs, under the direction of Leona Geldenhuys (Alumni Voices) and Johann van der Sandt (Drakensberg Boys’ Choir), is a compilation of new Christmas music by Karl Jenkins.

Two cycles, Stella Natalis, made up from new compositions, and Joy to the World, compiled from well-known traditional Christmas music, are combined in this production.

Stella Natalis (Star of Birth or Star of Origin) celebrates the different aspects of Christmas – Celebro – celebrations, Lullay – the sleeping child, Dona nobis pacem – message of peace, and Jubilate Deo – thanksgiving, forms part of the programme.

The part: JOY TO THE WORLD also includes traditional Christmas music. This fresh and vibrant arrangement of In dulci jubilo, Go Tell it on the Mountain, Silent Night, O Jesu so sweet, Son of Maria and The Virgin Mary had a Baby boy, all new arrangements by Karl Jenkins, promises to be an exciting experience.

This work, which conveys the Christmas message of peace, goodwill and compassion, as well as new beginnings, evokes a colour palette of sound filled with exciting musical inspiration.

The work was written for mixed choir, as well as for an optional choir suitable for children’s voices, trumpet soloist, keyboard, percussion and string ensemble.

The trumpet soloist is Paul Loeb van Zuilenburg, with Johan Cromhout as pianist. Members of the Free State Symphony Orchestra complete the picture.

Back

Economic and Management Sciences

Education

Health Sciences

The Humanities

Law

Natural and Agricultural Sciences

Theology and Religion

Open Distance Learning

Business School

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept