Friends,

As a part of my research for my PhD thesis, I've been retrieving information on tourism in South America. One useful tool is a review called "Estudios y Perspectivas en turismo" (http://www.estudiosenturismo.com.ar/) it's an indexed review with several years of research accessible directly through the web with no need of register or payment. 

I just wanted to share the website. Although it's published in Argentina, most of the articles come from Brazil and the subjects are mainly related to tourism management issues. It is, however also possible to find papers related to protected areas and ecotourism in both Chile, Argentina and Brazil.

Hope it helps!