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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 intensifies its advocacy on humanity and solidarity to Japan

2011-03-08

Staff and students from our university, marching for humanity
Photo: Stephen Collett

Staff and students from the University of the Free State (UFS) representing various associations and student bodies, together with Kovsie supporters, braved the cold and wet weather yesterday (17 March) as they embarked on a march for humanity. This occurred just two days after an urgent meeting had been called by the Dean of Student Affairs, Mr Rudi Buys to create a platform for students to deliberate on mechanisms to be used in supporting Japan, which is facing immense challenges, thereby responding to their unfortunate current situation. It is also a day after the direct conversation between the UFS and the South African ambassador to Japan, Mr Gert Grobler, a Kovsie alumnus.

The visibly spirited group started their march from the Main Building on the UFS Main Campus in Bloemfontein. Within minutes the Callie Human Centre – assembly point for the participants – was occupied by students and staff members who arrived in their numbers, carrying banners with messages of support for Japan.

Modieyi Motholo, ISC Chairperson, read a memorandum in the presence of more than 300 students. “We, the community of the University of the Free State, as sons and daughters of South Africa and the world, by our very action in this march today, celebrate our shared humanity, declare our solidarity with the people of Japan, and join the movement to build a culture of Human Rights. We declare our commitment to the cause of human dignity and equality, and the promotion of human rights, non-racialism and non-sexism,” read the memorandum.

“Japan is far; we shall never be able to take the entire Kovsie community there to assist the Japanese in rebuilding their homes. However, we can show our solidarity and raise an awareness for their unfortunate circumstances by our numbers,” Modieyi said.

Mr Buys admitted to being overwhelmed by the united Kovsie community he witnessed standing up for a cause they believed in. On receiving the memorandum on behalf of the UFS management, he stated: “There is a different and new set of values in our student community. We have the best students in the world, driven by a pioneering spirit aimed at building a new society. We have come so far in a short period of time. You deserve recognition as a student population.”

The march was also organised to declare the UFS’s support and solidarity for the people of Japan. The solidarity campaign has further been intensified with the establishment of committees comprising fundraising, research, marketing and awareness, spirituality and volunteers. Nida Jooste, the ISC Vice-Chairperson, said that the research committee was busy conducting a comprehensive study on how the UFS can be of assistance to the Japan. “With the report we will be able to design and implement programmes that will be aligned with the needs of the people of Japan. “In the meantime, we will carry out small projects that will keep the flame of solidarity burning on our campus,” she concluded.

Noticeable amongst the attendees were Mr John Samuels, the current Director of the International Institute for Studies in Race, Reconciliation and Social Justice.

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