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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 student government elections declared free and fair

2015-09-04

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Video: SRC announced (Bloemfontein Campus)

The 2015/2016 Student Representative Council (SRC) elections on the Bloemfontein and Qwaqwa Campuses of the University of the Free State (UFS) have been declared free and fair.

The institutional Independent Election Commission Chairperson, Mandla Ndlangamandla, commended the high level of cooperation displayed by all students who participated in the peaceful and organised elections on the Qwaqwa Campus.

“We are proud to indicate that from the beginning of the election process, there were no incidents of intimidation, disruption, threats, and violence that were reported,” he said.

Announcing the election results at Bloemfontein Campus, the representative of the Electoral Commission of South Africa (IEC), Andrew Ndelele, also confirmed that the commission had ensured that the elections were credible.

Voter turn-out increased at both campuses compared to the previous year. The elections, which took place from Friday 28 August to 1 September 2015, saw 8% and 0.7% increases in votes casted at the Qwaqwa and Bloemfontein Campuses, respectively.

Paseka Sikhosana, President-elect of the Qwaqwa Campus, commended the unity and orderliness displayed by students: “After the polling stations had closed, we came together and sang in peace”.

Incoming SRC President of the Bloemfontein Campus, Lindokuhle Ntuli, also endorsed the impartiality of the elections, while expressing how humbled he was by the support he received during the campaigning period.

Bloemfontein elective portfolios:

Bloemfontein Campus president: Lindokuhle Ntuli
Photo: Johan Roux

President: Lindokuhle Ntuli
Vice-President: Mpho Khati
Secretary: Tsietso Mafaso
Treasurer: Katleho Masheane
Culture: Delia Moumakwe
Sport: Kabelo Elijah Noosi
Transformation: Katleho Mmolayeng Letube
Student Accessibility and Support: Victor Fana Sejane
Media and Marketing: Peo Morwesi Segano
First-generation students: Nicola King
Legal and Constitutional Affairs: Luke Harrold Small
Student Development and Environment: Karabo Pheko

Bloemfontein ex officio portfolios:

Associations Student Council: Sikhulekile Luwaca
Academic Affairs Student Council: Letsika Liqoalane
Campus Residences Student Council: Ingrid Wentzel
Commuter Student Council: Audrey Sithebe
Postgraduate Student Council: Kamogelo Dithebe
International Student Council: Takudzwa Gezi
Student Media Council: Hatsu Mphatsoe
Rag Fundraising Council: Tubatsi Moloi
Rag Community Service Council: Johan Diedericks

Qwaqwa Campus president: Paseka Sikhosane
Photo: Thabo Kessah

Qwaqwa elective portfolios:

President: Paseka Sikhosane
Vice-President: Zethu Mhlongo
Secretary: Nondumiso Langa
Treasurer: Palesa Selepe
Student Development and Environmental Affairs: Lindokuhle Ngubane
Media and Publicity: Bongiwe Buthelezi
Politics and Transformation: Nthabiseng Mokoena

Qwaqwa ex officio portfolios:

Academic Affairs: Edward Nkadimeng
Arts and Culture: Kwenzakwenkosi Mthethwa
Sports Affairs: Thabo Zengele
Rag and Dialogue: Dieketseng Mokoena
Religious Affairs: Mamosebetsi Mokoena
Residence Affairs: Pheletso Moekoa
Off-Campus: Nicholas Sibeko

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