 On 18 November 1991 the Massaranduba Forest Reserve was closed to settlement, deforestation, professional fishing, logging, mining and other activities that could compromise sustainable use other than the activities of small farmers, rubber tappers and fisherfolk.Massaranduba Extractive Reserve was created by state decree 7.103 of 4 September 1995 with an area of .The purpose was to provide an area for sustainable use and conservation of natural resources by the agro-extractive population.