ABSTRACT
Risk assessment of IAS is used to support the exclusion of potential invasive species from being introduced, as well as to assess the impacts of those that have already become established in a particular region. Baker's list of weed characteristics is reported as an important initiative that paved the foundation for research in weed ecology and the development of weed risk assessments. A risk assessment procedure to regulate the introduction of invasive species in Sri Lanka first developed by Ranwala et al. includes a set of questions and scores related to the ecological impacts caused by plants, their invasive potential, and the current distribution and feasibility of control. Basically, almost all risk assessment procedures focus more or less on the same aspects, for example, the range of distribution plant species, impacts to the economy, ecological importance, and assessment of invasive characteristics. .
