Complex sentence: The reserve was established in 1990 in the municipalities of São Sebastião do Uatumã and Itapiranga, and covered; though the Unión Internacional para la Conservación de la Naturaleza y de los Recursos Naturales (UICN) report of 2010 states it covers.
Split into simpler sentences: The reserve was established in 1990 in the municipalities of São Sebastião do Uatumã and Itapiranga, and covered. The Unión Internacional para la Conservación de la Naturaleza y de los Recursos Naturales (UICN) report of 2010 states it covers.