for the reserves located in rio, the institudo estadual do ambiente - inea, posts on this page an orientation and instructions on how to get access to these protected areas, including a link to the document to be filled out and submitted (documentos para solicitação de autorização de pesquisa).

generally, all conservation units in brazil allow for public access, exception made for biological reserves and ecological stations that require a special authorization, or reserves located inside military areas such as the ilha da marambaia.

located in brasilia, the capital of brazil, another institution that can be of assistance when requesting authorization to visit biological reserves is the institudo chico mendes de conservação da biodiversidade, that can be contacted via this on-line form.