Prioritisation of aquatic invasive alien plants in South America with the US Aquatic Weed Risk Assessment

摘要: Forty South American aquatic plant species were selected and categorised in four a priori status classes (alien naturalised, alien invasive, native absent) according to expert opinion, for 16 regions (Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falklands Islands, French Guiana, Galapagos, Guyana, Paraguay, Peru, Georgia Sandwich Suriname, Uruguay Venezuela). The 40 assessed using the US Aquatic Weed Risk Assessment (USAqWRA) scheme each of regions, total number 644 assessments America (153 assessments). method was benchmarked against opinion (invasive, non-invasive). We ranked 17 them as 15 invasive at least one region. USAqWRA distinguished between non-invaders invaders with an overall accuracy 84.9% 54.1% areas under curves equal 0.893 0.853, threshold score 51.5 43.5, respectively. study highlights that could represent suitable screening protocol prioritise have potential cause negative impacts, prevent attempts introduction manage risky plants America.