A biome is a large naturally occurring community of flora and fauna occupying a geographic region. The MMA is developing methodology to assess the ecological status of indigenous lands, as well as their management, demarcation and land regularisation, to verify their contribution to the national protected area targets (MMA, 2015a). The contribution of APPs and RLs will be known only after the full registration of these lands in the Rural Environmental Cadastre (Chapter 4). In May 2015, ICMBio was responsible for the management of 320 protected areas (all federal protected areas except private natural heritage reserves). Ecological corridors are areas of habitat connecting wildlife populations separated by human activities or structures such as roads development or logging.