## Biblioteca

Results showed that both internal PA attributes and external characteristics are considered by visitors. The results have practical utility and can be used to improve investment efficacy among the PAs that already receive visitors and to evaluate the tourism attractiveness for new PAs. Also, findings are useful for the communities and small businesses located in the adjacent areas, since adequate prediction of visitor demand provides support for tourism activities. The economic analysis demonstrated that total contributions of around 8 million visitors in 2015 reached more than $1.2 billion dollars in total sales,$342 million in personal income, and $473 million in value added to the Gross Domestic Product (GDP) and supported 43,602 jobs. The analyses demonstrated that every dollar Brazil invested in the PA system produced$7 in economic benefits nationally. The results showed that the economic impacts of ecotourism not only directly affect PA management and the tourism industry, but also indirectly affect other types of businesses and the local communities.