1 Assessing the extent of agriculture/pasture and secondary succession forest in the Brazilian Legal Amazon using SPOT VEGETATION data João M. B. Carreiras a, *, José M. C. Pereira a , Manuel L. Campagnolo b , and Yosio E. Shimabukuro c a Department of Forestry, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017 Lisboa, Portugal. b Department of Mathematics, Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017 Lisboa, Portugal, and Center for Logic and Computation, Instituto Superior Técnico, Lisboa, Portugal. c Remote Sensing Department, Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas, 1758, CEP 12227-010, São José dos Campos, SP, Brazil. *Corresponding author. Tel.: +351-213653387. E-mail address: jmbcarreiras@isa.utl.pt (J.M.B. Carreiras). Manuscript