Evaluation of Potential Responses to Invasive Non-Native Species with Structured Decision Making

摘要: :  In managing invasions and colonizations of non-native species, eradication or control efforts must proceed quickly. There are 2 challenges in taking such quick action. First, managers frequently have to choose among complex often competing environmental, social, economic objectives. Second, the effects highly uncertain. We applied participatory structured decision making (SDM) develop a response plan for recent invasion myrtle rust (Uredo rangelii) Australia. Structured breaks process into 5 steps: identify problems (i.e., decisions be made), formulate objectives, management alternatives, estimate consequences implementing those select preferred alternatives by evaluating trade-offs alternatives. To determine mid- long-term rust, we conducted workshops 18 interviews with individuals elicit stakeholders’ key concerns convert them objectives (minimize cost, minimize cost industry, on natural ecosystems landscape amenities, environmental associated use fungicide) (full eradication, partial slow spread, live it [i.e., major effort invested mitigation effects], do nothing). also developed trees graphically represent essence displaying relations between uncertainties points. short term before local expansion do-nothing alternative was not preferred, but an only recommended if probability exceeded about 40%. After slow-the-spread regardless which short-term selected at earlier stage. The SDM approach effectively resulted informed transparent plans that incorporated multiple decision-making processes under high uncertainty.