This research was funded by the DST-NRF Centre of Excellence for Invasion Biology; the South African National Department of Environment A airs through its funding of the South African National Biodiversity Institute’s Invasive Species Programme; grant no. 19-28807X in the programme “Grant projects of excellence in basic research EXPRO” (Czech Science Foundation) and by long-term research development project in the programme “The Development of Research Institutions” (Rozvoj výzkumných Organizací, RVO), no. RVO 67985939 (The Czech Academy of Sciences) from institutional resources of the Ministry of Education, Youth and Sports of the Czech Republic; theWorking forWater (WfW) programme of the Department of Environmental A airs: Natural Resource Management programme (DEA: NRM); the South African Research Chairs Initiative of the Department of Science and Technology and National Research Foundation of South Africa; the BiodivERsA-Belmont Forum Project “Alien Scenarios”, project number I 4011-B32; and UNISS “Fondo di Ateneo per la ricerca 2019).