Unmitigated economic impact of polyphagous shot hole borer estimated at R275 billion

The potential economic impact of the polyphagous shot hole borer in South Africa amounts to R275 billion over the next ten years if nothing is done to stem the tide. This estimate is the result of a study conducted by economists and ecologists at the Stellenbosch University (SU) and the University of Pretoria (UP).

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Read more about the article Generation of machine-learning training samples using traditional image classification algorithms
Madodomzi Mafanya capturing a Pompom weed GPS coordinate using a GNSS receiver at Rietvlei Nature Reserve. (Photo supplied by Madodomzi)

Generation of machine-learning training samples using traditional image classification algorithms

The study by PhD student, Madodomzi Mafanya, and C∙I∙B Core Team member, Tsungai Zengeya, demonstrated that it is possible to generate large numbers of accurate training samples from traditional image classification algorithms that can be used to map the distribution of alien plant species using machine-learning algorithms.

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Read more about the article The dual purpose of Guava invasion in Vhembe Biosphere Reserve
Guava (Psidium guajava L.) an invasive alien tree species that is widely distributed in Vhembe Biosphere Reserve, Limpopo Province of South Africa, where it has both benefits and costs. (Photo credit: Sheunesu Ruwanza)

The dual purpose of Guava invasion in Vhembe Biosphere Reserve

A new study by C∙I∙B Core Team member Sheunesu Ruwanza and co-author Gladman Thondhlana assessed the perceptions, knowledge, and uses of guava to rural communities in the Vhembe Biosphere Reserve, South Africa.

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Read more about the article Using wet and dry plants to understand riverbank flooding
Wild almond (Brabejum stellatifolium) (Photo: Wikimedia Commons contributors)

Using wet and dry plants to understand riverbank flooding

A group, including C∙I∙B researchers, have developed a method that uses plant communities to determine the position of the 1:2 year flood line on Fynbos rivers that lack hydrological records.

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Read more about the article Invasive crayfish can cause high fisheries damage
Gill net fishing in the Zambezi (Photo by Josie South)

Invasive crayfish can cause high fisheries damage

A study by C∙I∙B Research Associate Josie South and scientists from SAIAB quantified the ecological damage and potential economic losses caused by two invasive crayfish in southern Africa.

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