Robinson Crusoe Island, part of the Juan Fernández Archipelago in Chile, is under threat from invasive species. So action needs to be taken. As part of a larger management programme for the whole Archipelago, a team from CABI will help conserve and re-establish native species on the island. In the long term this project will provide the biological resources and protocols for replanting larger areas of land.
Invasion by the alien plant Madagascar rubbervine is endangering native flora and fauna in northeastern Brazil. In the Caatinga area, the endemic Carnaúba palm, with its highly valued wax, has come under threat. CABI, in collaboration with Brazilian counterparts, is seeking to evaluate the rust Maravalia cryptostegia as a potential biocontrol agent for Madagascar rubbervine. The same rust has been used in Australia to successfully control another invasive alien rubbervine species.
Jatropha gossypiifolia (bellyache bush) is a major invasive plant in northern Australia. Previous biocontrol efforts have focused on insects but the Australian Government is now also keen to explore fungal pathogens. As experts, CABI is carrying out safety and efficacy experiments with the rust pathogen Phakopsora arthuriana using a strain originating from Trinidad. Results will help the Australian authorities decide whether this rust is suitable for biocontrol of J. gossypiifolia in Australia.