Scenario planning is a promising approach for aiding management decision making in complex, changeable systems. Rather than focussing on the accurate prediction of a single probable future, scenario planning involves thinking creatively about how the system might develop under a set of possible futures. In this way, policymakers can consider a range of plausible ways in which system dynamics might change, including surprise and catastrophe, and identify key uncertainties that might hinder the design and implementation of effective management policies. Scenario planning has been used extensively in business and politics to develop strategies for a range of possible futures [43]. More recently, scenarios have been used in the environmental sciences to improve decision making in complex ecosystems [3] and [46], to anticipate change in ecosystem services [36] and to explore strategies for sustainable development [39]. For instance, scenario planning was used in the Millennium Ecosystem Assessment for exploring the ways in which policy decisions may drive future ecosystem change, how ecosystem change may constrain future decision making, and ways in which ecological feedback may lead to surprise [32].