Chades, I., Martin, T.G., Nicol, S., Burgman, M.A., Possingham, H.P. & Buckley, Y.M. General rules for managing and surveying networks of pests, diseases, and endangered species. Proc. Natl. Acad. Sci. USA. 2011 0: 1016846108v1-201016846
Author: Dr. Iadine Chades
Efficiently managing diseases, pests or threatened species over time and across space is a difficult challenge. Pests and diseases can reinfect or reinvade previously managed locations, while threatened species may disappear from previously occupied areas. Managers need to know where to invest their limited resources so that they get the biggest bang for their buck. Being efficient in managing also means accounting for our inability to perfectly detect the presence of a disease or a species. The research answers the key questions: Have we managed long enough to ensure the pest or disease is eradicated? Or have we stopped too soon to protect a threatened population?
Dr Iadine Chades from CSIRO Ecosystem Sciences and colleagues, including Dr. Yvonne Buckley who jointly works with CSIRO and The University of Queensland, have provided a decision tool to answer these questions. Using typical network patterns (lines, stars, islands and clusters), they derived simple and robust management rules that outperform traditional outside-in management strategies by up to 30%. The rules take into account management success, dispersal, economic cost, and imperfect detection and offer decision-makers a practical basis for managing networks relevant to many significant environmental, biosecurity, and human health issues.