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21 April 2023 | Story Leonie Bolleurs | Photo Supplied
Dr Katlego Mashiane
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 the only university in South Africa with a P-rated history researcher
2016-12-13

Description: Dr Daniel Spence  Tags: Dr Daniel Spence  

Dr Daniel Spence has been earmarked by the NRF
to become a future international leader in his field
of expertise.
Photo: Supplied

The University of the Free State (UFS) is the only university in South Africa with a P-rated History researcher. Dr Daniel Spence, a postdoctoral Research Fellow at the International Studies Group (IGS), and a member of the Vice-Chancellor’s Prestige Scholar’s Programme at the UFS, was last week awarded a National Research Foundation P-rating by the National Research Foundation (NRF). Dr Spence is the first South African historian to achieve this honour.

Leader of the pack
P-ratings are given to young researchers, usually under the age of 35, who have the potential to become leaders in their field. Researchers in this group are recognised by all, or the overwhelming majority of, reviewers as having demonstrated the potential to become future international leaders.

The rating is awarded on the basis of exceptional research performance and output from their doctoral and early postdoctoral research careers.

Other researchers from the UFS who obtained P-ratings in the past, are Prof Lodewyk Kock (1986), Prof Zakkie Pretorius (1989), and Prof Robert Schall (1991).

Extraordinary achievement lauded  
“It is an extraordinary achievement. There are fewer P-ratings, than there are A-ratings,” said Prof Neil Roos, associate professor at the ISG. Prof Roos said the P-rating was seldom awarded to researchers within the field of Humanities.

As a member of the ISG, Dr Spence’s research has flourished under the guidance of Prof Ian Phimister. Much of the success of this group is due to the way it operates as an incubator for high-level research, with scholars collaborating with each other.

In addition to Dr Spence’s magnificent P-rating, the ISG currently has three C1-rated researchers (established researchers with a sustained recent record of productivity in their field) and two Y1-rated researchers (researchers 40 years old or younger, who are recognised by all reviewers as having the potential to establish themselves as future leaders in their fields).

“From the time Dr Spence wrote his doctoral thesis on the colonial history of the Royal Navy, he has expanded his field of expertise so that he can address imperial and global histories of race,” said Prof Roos.

Demonstrated research excellence

Dr Spence secured a postdoctoral Research Fellowship at the UFS to develop an African case study to augment his Asian and Caribbean research thesis into a monograph. In March 2013, Dr Spence won a three-year NRF Postdoctoral Innovation Scholarship, and learned Kiswahili ahead of archival research in Kenya and Tanzania from April to May of that year. He has conducted archival and oral research in Singapore, Malaysia, Hong Kong, Australia, Kenya, Zanzibar, the Cayman Islands, Trinidad, and the UK.

Internationally renowned
Dr Spence is the author of two monographies, the Colonial Naval culture and British imperialism, 1922-67 and A History of the Royal Navy: Empire and Imperialism. He has been invited to present papers and chair panels at over 20 international conferences, workshops and seminars.

The NRF rating system is a benchmarking system through which individuals who exemplify the highest standards of research, as well as those demonstrating strong potential as researchers, are identified by an extensive network of South African and international peer reviewers.

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