This paper explores the adoption of sustainable tourism ideas in a Park Authority's policies over a period of two decades in a developed world, category V protected area. There is only limited research on influences encouraging the inclusion of sustainable tourism ideas in protected area policies, or on relationships between sustainable tourism policies and other policy priorities. The paper departs from an approach which considers sustainable tourism policies in isolation, because potentially they are reformulations or extensions of other previous policies, or else indirect outcomes of other policies. There is assessment of influences on the Park Authority's sustainable tourism policies, and of the co-evolution between sustainable tourism policies and other policies. Such influences as government funding reductions and rising concern for community well-being affected the Authority's adoption of sustainable tourism ideas. Incorporation of sustainable tourism ideas in policies occurred gradually. It involved re-labelling established policies as well as reframing and extending those policies. It was often an indirect outcome of policy developments not focused specifically on sustainable tourism. Sustainable tourism-related policies co-evolved with, and through, policies for community well-being, actor participation, and sustainable development. The approach used here is relevant for research on policy co-evolution in other policy fields.
