Challenges in invasive alien plant control in South Africa

• Brian W. van Wilgen Centre for Invasion Biology, CSIR Natural Resources and the Environment, Stellenbosch
• Richard M. Cowling Department of Botany, Nelson Mandela Metropolitan University, Port Elizabeth
• Christo Marais Environmental Programs, Department of Environmental Affairs, Cape Town
• Karen J. Esler Centre for Invasion Biology, and Department of Conservation Ecology and Entomology, Stellenbosch University, Stellenbosch
• Matthew McConnachie Department of Botany, Nelson Mandela Metropolitan University, Port Elizabeth
• Debbie Sharp Environmental Programs, Department of Environmental Affairs, Cape Town