However, in 1999, Red Ambiental Peruana (an alliance of several NGOs) and COPRI (the authority for rights for timber exploitation) conduct research in the area and agree to protect the northern part of the forest due to its high biodiversity.

[4] In 2000, the Cordillera Azul Reserved Zone is established on the mountainous part of the national forest, and a team from the Field Museum begins an assessment of the biodiversity in the area.

[6] At the northern end of the park, the Huallaga river opens a water gap in the mountain range, east of Chazuta, this feature is known as Pongo de Aguirre.

[2] Among the plant species found in the area are: Ceiba insignis, Ficus spp., Tabernaemontana sananho, Inga spp., Swietenia macrophylla, Triplaris americana, Miconia spp., Couroupita guianensis, Ocotea javitensis, Sciodaphyllum spp., Erythrina ulei, Alchornea triplinervia, Terminalia amazonia, Calophyllum brasiliense, Pouteria spp., Cedrela fissilis, Epidendrum spp., Schizolobium parahyba, Bactris gasipaes, Cecropia spp., Hevea guianensis, Dracontium spruceanum, Attalea maripa, Brosimum alicastrum, Asplenium serratum, Heliconia rostrata, Carludovica palmata, Solanum grandiflorum, Geogenanthus poeppigii, Myroxylon balsamum, Brunfelsia grandiflora, Calycophyllum spruceanum, Mauritia flexuosa, Virola calophylla, Desmoncus polyacanthos, Podocarpus oleifolius, Theobroma cacao, Cedrelinga cateniformis, Zamia poeppigiana, Amburana cearensis, Margaritaria nobilis, Jacaranda copaia, Eugenia spp., Spondias mombin, Maxillaria graminifolia, etc.

[7][9] Mammals reported in the area include: the Amazon dwarf squirrel, the bush dog, the puma, the common opossum, the brown-mantled tamarin, the Peruvian spider monkey, the jaguar, the white-lipped peccary, the red brocket, the South American tapir, the tayra, etc.