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

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

Getting out of the dark

2015-06-10

ESKOM is making daily announcements on the status of the power grid.

Anton Calitz, Electrical Engineer at University Estates, is in continuous contact with Eskom and Centlec in an effort to stay abreast of load shedding.

According to Anton, Eskom has recently - the week of 20 April - been focusing on the evening peak, and has announced STAGE 1 load shedding from 17:00-22:00; thus, the Bloemfontein Campus should be able to continue business as usual during the day, except for Thursdays from 18:00 and, possibly, Fridays from 17:00.

Where can I get more information about load shedding stages?

Apart from Eskom’s webpage, staff can also visit GRID WATCH. Click on "Search", then under "Schedules". Look for "Mangaung Local Municipality", and select "GROUP 4". Save this location. “This can even be loaded onto your mobile device.”

“The time slots can be seen for a couple of days in advance, to allow us to plan around the possibility of load shedding in our daily lives,” said Anton.

Please note: ESKOM can change the STAGE level at any time. Therefore, keep an eye on GRID WATCH and News24.

View the typical seven-day planner for the Bloemfontein Campus (Group 4), which indicates the STAGE 2 and 3 possibilities. Take note that, on some days, the STAGE 2 and 3 time slots are the same.

More load shedding tips: Your IT needs

The UFS Data Centre (Computer Room) is fully serviced by a generator facility, and can function without external power supply for a few days.

The generator servicing the UFS data centre does NOT provide power to the outlying facilities. This implies that all digital equipment at gates, booms, and access points will be shut down until the power is restored to these facilities. “We are now, in collaboration with Nico Janse van Rensburg, in a process to install UPS facilities at these points, which will ensure two to three hours of power supply at these points, even during load shedding,” said Dr Vic Coetzee, Senior Director: ICT Services.

No Wi-Fi will be available, as it is dependent on the power supply to the buildings where it is installed.

All servers are contained in the data centre, and will be kept running by our generators.

How to manage load shedding and your IT needs:

1. Get into the habit of saving your work regularly on computer so that you don’t lose your work/files during load shedding.
2. Back up important data. Keep to a schedule of regular back-up. Make sure your computer back-ups are safe and recoverable.
3. Keep all electronic devices charged and ready to run on battery power. Keep your cellphone charged: some old-style Telkom landlines will still operate during power outages, but others won't.
4. Remember, when power supply is restored, it sometimes happens that a power surge is sent through the network, which will damage your computer. Fortunately, laptop computers will not suffer this fate as their power is provided through an external power pack. Often, this power pack will be damaged, but not the laptop itself.
5. It makes good sense to reboot your computer daily, not only in terms of power shedding, but also in terms of updating the drivers, software, etc.
6. Switch off all computers and other electrical equipment at the wall plug overnight and on weekends.
7. Should your IT equipment not switch on after a power outage, log a call with the ICT Services. You can also call them at x2000.

More information, guidelines and contact numbers

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