This research was carried out at Parque Estadual do Espinilho, in Barra do Quaraí, Rio Grande do Sul State, Brazil, aiming to characterize the floristic, phytosociological structure and dynamics in Savana Estépica Parque. For such, within a permanent sample unit of 1 ha (100 m x 100 m), were identified and measured all individuals with diameter at breast height (DBH) ≥ 10 cm. The floristic is made up of Prosopi...