'metropolitan area reserves' can be either ecological or biological, and are all located within rio de janeiro's city limits.

all other reserves grouped as ecological or biological are  located outside the city, but within rio de janeiro state.

on this link, we listed a summarized technical definition of the most important types of conservation units (unidade de conservação) and protected areas in rio de janeiro. 

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 request access (documentos para solicitação de autorização de pesquisa).