[1] It is on the north shore of the mouth of the Amazon River on the border with the municipality of Santana, 15 kilometres (9.3 mi) from the state capital, Macapá.

Flora includes açaí palm (Euterpe oleracea), Pentaclethra macroloba, Hevea brasiliensis, Carapa guianensis, lianas, bromeliads and orchids.

[4] The Fazendinha Biological Reserve was created by state decree 020 of 14 December 1984 to fully preserve and protect the ecosystem and natural resources of the area.

Law 873 of 31 December 2004 created the APA in the same area, with the objective of reconciling environmental protection with rational and sustainable economic use of natural resources by the local population.

[2] The first report by the Amapá Secretariat of the Environment (SEMA) on the process of occupation, use and degradation of the biological reserve was issued in 1995, updated in 1998, 2003 and 2009.