generally, all conservation units in brazil allow for public access, exception made for ecological reserves and ecological stations that require previous authorization.    

published by inea is the map unidades de conservação da natureza no estado do rio de janeiro (conservation units in the sate of rio de janeiro), showing in the detail the location of various types of protected areas and areas of sustainable use.

the instituto socioambiental is an extremely valuable reference and source for news, events, history, and projects relating to many protected areas throughout brazil.