Simplified pollen diagram of the last 2800 cal. BP. All taxa marked by * are expressed in number of spores per gram of sediment or number of carbonized particles per gram of sediment. 1st IA: first Iron Age (Hallstatt); 2nd IA: second Iron Age (La Tène); GR: Gallo-Roman period; E. MA: Early Middle Ages; H. MA: High Middle Ages; L. MA: Late Middle Ages; HOP: human occupation phase; AP: abandonment phase.