The Nascentes do Lago Jari National Park and the Igapó-Açu Sustainable Development Reserve are on the opposite side of the BR-319 highway.

Vegetation includes terra firma forest with many Brazil nut trees, igapó, campina and campinarana.

Traces of mammals such as the South American tapir (Tapirus terrestris), jaguar (Panthera onca) and cougar (Puma concolor) have been found, indicating that the environment is healthy.

[4] There are no permanent residents in the reserve, but some families occupy the area seasonally to harvest Brazil nuts.

[5] They are represented by the Central das Associações Agroestrativistas de Democracia (CAAD), which covers communities around the Madeira River and the AM-464 highway.

[8] The Rio Amapá Sustainable Development Reserve was created by Amazonas decree 25.041 of 1 June 2005 with the objectives of preserving nature and ensuring the means and conditions for assuring and improving the quality of life of the traditional extractive population.

[10] On 19 October 2005 the Instituto Nacional de Colonização e Reforma Agrária (INCRA – National Institute for Colonisation and Agrarian Reform) recognised the reserve as meeting the need of 300 families of small rural producers, who would qualify for PRONAF support.