Resumen de Contribución al conocimiento de la dinámica de la vegetación en el sector oriental del Sistema Central Español, en base al análisis polínico.

María José Gil García, Rafael Tomás Las Heras, María Blanca Ruiz Zapata

• Based on the study of the peat-b o g PM VII, located in the Puerto de Morcuera, both the vegetation dynamics and the anthropic influence in the last 1.000 years have been elucidated. Near 640± 50 BP (UCRA-362) this area was dominated by a dense forest of Quercus c „ altogether with regional forest of Pinus and Betula. Later on these forest becam e less dense as a consequence of an intense anthropic activity