 Massaranduba Extractive Reserve is one of 15 small extractive reserves in the municipalities of Machadinho d'Oeste, Cujubim and Vale do Anari, remnants of the former Seringal Santo Antônio, Seringal São Paulo and Seringal São Gonçalo rubber extraction concessions.They are administered by the Association of Machadinho Rubber Tappers.The main resource extracted from the forest is rubber, as well as nuts and copaiba oil.