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14 August 2018
Media effectively used to save the giraffe
“If we can save the habitat wildlife need, then the animals will be just fine,” said Dr Francois Deacon, a wildlife habitat expert in the UFS Department of Animal, Wildlife and Grassland Sciences.

The University of the Free State (UFS) is leading the fight against the extinction of giraffes and has assembled the largest research team in the world to manage, coordinate, and address this issue. Seven UFS departments are involved in this research. 

Dr Francois Deacon, a wildlife habitat expert in the UFS Department of Animal, Wildlife and Grassland Sciences, is leading the team of researchers who tasked themselves with better understanding the giraffe, and in so doing, save the giraffe. He said: "One way to stop the plummeting numbers is to learn more about how giraffes use their habitat and how much area they need in order to survive."

Dr Deacon focuses on the spatial ecology of wild animals. His main research focus is to understand the ecological and biological factors that regulate giraffe in their natural habitat.

Documentaries save

He collaborated with a documentary film crew to release the second in a trilogy of documentaries regarding giraffes and their natural habitat. The first, Last of the Longnecks, focused on the fact that giraffes are becoming extinct. The second documentary, Catching Giants, which was released last year, includes footage on how a multi-specialist research group of over 30 people from 10 different countries worked together to collect information about these little-known animals.

Documentaries such as these, together with a recent insert in the local wildlife documentary on SABC 2, 50/50, also helped to raise awareness on the giraffe and its plight.

Telling the truth

Dr Deacon said: “It is extremely important for the public to see how involved we really are with a major problem such as a species becoming extinct. Media exposure outlines the truth of what man is doing to nature. Cooperating with media such as the BBC, National Geographic, and 50/50, offers other journalists, producers, editors, and authors the opportunity to also take responsibility for raising awareness on the issue.” 

“Apart from the fact that awareness is shedding light on the problem, it also highlights who the leaders in this field are, what they are doing to address the problem, and what more is needed to make a change. The latter includes the funding of postgraduate students to conduct further research on this matter. If we were able to gather sufficient knowledge through different research questions across the globe, we could really make a difference in saving giraffes from extinction.” 

News Archive

Sunflowers are satellite dishes for sunshine, or are they?
2016-07-20

Eighty-six percent of South Africa’s
sunflowers are produced in the
Free State and North West provinces.

Helen Mirren, the English actress, said “the sunflower is like a satellite dish for sunshine”. However, researchers at the University of the Free State (UFS) have found that too much of this sunshine could have a negative effect on the growth of sunflowers, which are a major source of oil in South Africa.

According to Dr Gert Ceronio from the Department of Soil, Crop, and Climate Sciences at the UFS, extremely high soil temperatures play a definite role in the sprouting of sunflower seedlings. Together with Lize Henning, professional officer in the department, and Dr André Nel from the Agricultural Research Council, he is doing research on biotic and abiotic factors that could have an impact on sunflowers.

Description: Sonneblom 2 Tags: Sonneblom 2

Various degrees of deformity (bad-left
to none-right) in seedlings of the same
cultivar at very high soil temperatures.
Photo: Dr Gert Ceronio

Impact of high temperatures on sunflower production

The Free State and North West provinces, which produce 86% of South Africa’s sunflowers, are afflicted especially by high summer temperatures that lead to extremely high soil temperatures.

Dr Ceronio says: “Although sunflower seeds are able to germinate at temperatures from as low as 4°C to as high as 41°C, soil temperatures of 35°C and higher could have a negative effect on the vegetative faculty of sunflower seedlings, and could have an adverse effect on the percentage of sunflowers that germinate. From the end of November until mid-January, this is a common phenomenon in the sandy soil of the Free State and North West provinces. Soil temperatures can easily exceed the critical temperature of 43°C, which can lead to poor germination and even the replanting of sunflowers.”

Since temperature have a huge impact not only on the germination of sunflower seeds, but also on the vegetative faculty and sprouting of sunflower seedlings, Dr Ceronio suggests that sunflowers should be planted in soil with soil temperatures of 22 to 30°C. Planting is usually done in October and early November. Unfortunately, this is not always possible, as soil moisture is not optimal for growth. Farmers are then compelled to plant sunflowers later.

Impact of herbicides on sunflower growth

“High soil temperatures, combined with the herbicide sensitivity of some cultivars, could lead to the poor development of seedlings," says Dr Ceronio.

The use of herbicides, such as ALACHLOR, for the control of weeds in sunflowers is common practice in sunflower production. It has already been determined that ALACHLOR could still have a damaging effect on the seedlings of some cultivars during germination and sprouting, even at recommended application dosages.

“The purpose of the continued research is to establish the sensitivity of sunflower cultivars to ALACHLOR when exposed to high soil temperatures,” says Dr Ceronio.

 

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