This study area is a forest fragment of just over 860 ha, located in the municipality of Senador Guiomard, on the banks of BR 364, 27 km from Rio Branco, close to its confluence with BR 317, Estrada do Pacífico, and has a strategic importance for studies on biodiversity in Acre, as it is one of the areas where long-term studies are carried out, started in the late 1980s and early 1990s.