on this link, the corpo de fuzileiros navais da marinha do brasil maintains a webpage with more information on the island, its strategic importance, the demographics of the residents, and the history of the region.

for all reserves in brazil, generally the first step in obtaining authorizations for scientific research or academic projects is contacting the instituto chico mendes de conservação da biodiversidade - icmbio on this page, where a process of approval can be initiated after appropriate registration.  

before registering and submitting any request, it is necessary to read the manual with the instructions as set forth on the document on this page.  

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