• Alien species in South Africa's national parks 

      Spear, D.; McGeoch, M.A.; Foxcroft, L.C.; Bezuidenhout, H. (OpenJournals Publishing, 2011)
      Invasive alien species (IAS) are one of the major threats to biodiversity in protected areas, and pose a significant management challenge (e.g. Pyšek et al. 2002, Allen, Brown & Stohlgren 2009). One of the first steps ...