impact assessment

Read more about the article Addressing uncertainty in impact assessments for alien species
Participants at the workshop held in Melbourne, Australia in 2018. (Picture supplied by Melodie McGeoch)
2021 / Highlighted papers

Addressing uncertainty in impact assessments for alien species

Impact classification schemes for alien taxa are becoming more prominent as the threats posed by biological invasions increase. A recent study found that despite a high variety of uncertainties occurring in impact assessments, some of which cannot be eliminated easily, communicating their existence, cause and variety can lead to more useful and reliable outcomes of impact assessments.

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20 May 2021
Read more about the article We might underestimate impacts of alien grasses in South Africa due to limited data availability
Dallas grass (Paspalum dilatatum) invading cultivated hey grass at the Cedara Research Centre, KwaZulu-Natal. (Photo credit: Khensani Nkuna)
2019 / News

We might underestimate impacts of alien grasses in South Africa due to limited data availability

Alien grasses occurring in South Africa have been associated with negative environmental and socio-economic impact across the globe. Some grasses can increase the intensity and frequency of fires due to their large biomass, and many grass species invade areas such as agricultural land leading to reduced crop yield and quality.

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28 January 2019
Read more about the article Impacts of snails and slugs as alien species
The African giant land snail (Achatina fulica) is one of the most devastating snails globally as it has decimated native snails on islands. It has not been reported as alien in South Africa to this date, but it is common in the pet trade. (Photo credit: By Thomas Brown [CC BY 2.0 (https://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons)]
2018 / News

Impacts of snails and slugs as alien species

Even though snails and slugs (gastropods) are some well-known agricultural pests, environmental systems are more vulnerable to alien gastropod impacts. A recent study by C·I·B Hons student, David Kesner and C·I·B Core Team Member, Dr Sabrina Kumschick, at Stellenbosch University on this topic was published in the journal Ecology and Evolution.

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3 August 2018