The Ituxi River flows northeast through the reserve before joining the Purus River, one of the Amazon's major southern tributaries. Blackwater rivers like the Ituxi carry little sediment but are rich in dissolved organic matter, which stains the water dark and creates a distinctive ecosystem. The surrounding forest is a mosaic: terra firma forest on higher ground that never floods, seasonally inundated varzea forest along the riverbanks, and patches of capoeira scrub where older clearings have begun to regenerate. Brazil nut trees tower above the canopy, and copaiba trees yield the aromatic resin that has been traded in these forests for centuries. The reserve sits within a protective ring -- Mapinguari National Park borders it to the south and east, and the Iquiri National Forest flanks it to the west and north. Together with neighboring protected areas, the Ituxi reserve forms part of a conservation mosaic that safeguards one of the most biologically diverse regions on Earth.

The twenty communities of the Ituxi reserve read like a map of aspiration and faith: Nova Esperanca (New Hope), Vila Vitoria (Victory Village), Vila Canaa (Canaan Village). Others take their names from the landscape itself -- Pedreiras do Amazonas (Quarries of the Amazon), Praia Alta (High Beach), Estirao da Pedreira (Quarry Stretch). About 500 people live across these settlements, organized into roughly 300 families recognized by INCRA, Brazil's agrarian reform agency. Their economic life follows the seasons. When Brazil nuts fall between December and March, families fan out to collect the heavy pods. Rubber tapping follows its own calendar, dictated by rainfall and tree health. Acai palm fruit, copaiba oil, and vines supplement the harvest. Fishing in the reserve's lakes and flooded forests provides both sustenance and income, linking daily nutrition to the river's own rhythms.

The reserve was created by federal decree on 5 June 2008 -- World Environment Day -- and placed under the administration of the Chico Mendes Institute for Biodiversity Conservation, the agency named for the rubber tapper and environmental activist assassinated in 1988. The symbolism was deliberate. Mendes had spent his life arguing that the people who lived in the forest were its best protectors, that extraction and conservation could coexist. The Ituxi reserve embodies that philosophy, classified as IUCN Category VI -- a protected area with sustainable use of natural resources. Its deliberative council, established in November 2010, gives community members a formal voice in management decisions. In 2012, an ordinance linked the Ituxi reserve to a joint planning process for eleven conservation units in the BR-319 highway's area of influence, recognizing that the road connecting Manaus to Porto Velho posed both opportunity and existential threat to the surrounding forests.

In July 2012, ICMBio organized a three-day workshop in the Floresta community, deep within the reserve. The agenda was practical: how to build a community forest management plan, how to commercialize timber legally, how to turn trees into income without destroying the forest that sustained everything else. The Tropical Forest Institute partnered with a local organization -- the Association of Agroextractive Producers of the Assembly of God of Ituxi River -- to develop a training program. By June 2014, a Sustainable Forestry Management Plan had been approved, covering 1,400 hectares divided into ten annual production units. All harvested wood must carry DOF certification from IBAMA, Brazil's environmental enforcement agency. The plan was modest in scale, reflecting both the remoteness of the reserve and the caution of communities that had seen what uncertified logging did to forests nearby. As of 2016, the Ituxi reserve received support from the Amazon Region Protected Areas Program, a partnership between the Brazilian government and international donors that finances management of protected lands across the basin.