Invasive plants as drivers of regime shifts: identifying highpriority invaders that alter feedback relationships

Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa, Environmental Resource Management Department (ERMD), Westlake Conservation Office, City of Cape Town, Ou Kaapse Weg, Tokai 7966, Cape Town, South Africa, Stockholm Resilience Centre, Stockholm University, SE 106 91, Stockholm, Sweden, Stellenbosch Institute for Advanced Study (STIAS), Wallenberg Research Centre at Stellenbosch University, Marais Street, Stellenbosch 7600, South Africa, Centre for Studies in Complexity, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa, Department of Ecology and Environmental Science, Ume a University, SE 901 87, Ume a, Sweden, Department of Conservation Ecology and Entomology and Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa, Centre for Invasion Biology, Department of Mathematical Sciences, Stellenbosch University, Matieland 7602, South Africa; African Institute for Mathematical Sciences, Muizenberg 7945, VT South Africa, Department of Plant Biology, University of Vermont, Burlington, VT 05405, USA