Helen Roy discusses her recent Policy Direction, Developing a framework of minimum standards for the risk assessment of alien species and the challenges of producing a 14-step checklist for quality assurance in invasive species risk assessment. The dramatic rise in numbers of non-native species worldwide is increasingly recognised as problematic. While some non-native species have minimal effects on biodiversity*, and a few may be beneficial, about … Continue reading Managing non-native species and building a risk assessment checklist