The Biological Dynamics of Forest Fragments Project Area of Relevant Ecological Interest (Portuguese: Área de Relevante Interesse Ecológico Projeto Dinâmica Biológica de Fragmentos Florestais: ARIE-PDBFF) is an area of relevant ecological interest in the state of Amazonas, Brazil.

Two small segments are on the west side of the highway in the Rio Negro Left Bank Environmental Protection Area.

[3] The ARIE-PDBFF includes a total of 23 nature reserves in 11 forest fragments, including isolated reserves surrounded by pasture or secondary growth and non-isolated areas that are still part of large tracts of continuous forest.

[4] The Biological Dynamics of Forest Fragments Project Area of Relevant Ecological Interest was created by federal decree 91.884 of 5 November 1985.

The terrain consists of plateaus cut by small stream and creeks that form flooded areas in some parts.