Assessing risk across the spectrum of weed management.
2010
Downey, P. O. | Johnson, S. B. | Virtue, J. G. | Williams, P. A.
A range of risk assessment systems has been applied to the field of weed management globally to address the ever-growing problem of plant invasions. Here, we review the development of risk assessment and management systems across the spectrum of weed management, spanning pre-border (quarantine), post-border (generally aimed at eradication and containment) and the protection of environmental assets. These systems have been developed using broader risk management frameworks, enabling consistency with a range of other agreements and strategies (e.g. pre-border with international phytosanitary measures). While a weed risk assessment system (pre-border) has been developed and widely tested/adopted, post-border systems, especially for established weed species, have been more varied in their nature and application. For example, a triage system has been outlined only recently for managing the current risks of established or widespread weeds to native species. This review also highlights a range of other weed management areas in which risk assessment systems have been applied (e.g. invasion pathways) and where further progress is needed in the current systems to make them more robust. By assessing risk across the spectrum of weed management, we have demonstrated the role of each system and how they link together to address the majority of the spectrum. The application of risk assessment procedures has helped to create systems that aim to prevent, eradicate, contain and protect assets from the effects of weed invasions, the legacy of which will be long lasting, globally.
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