Résumé
The Lago del Vei del Bouc mire (2054 m asl) had previously been studied but the core covered only the Subaltlantic period. Our new core was taken close to the center of the basin and covers at least 12 000 years. It is 275cm long and consists mainly of silt and sand above gravel in the lower part and gyttia and undecomposed peat in the upper part. In the palynological study of high taxonomic resolution 141 pollen- types as well as spore types of fungi growing exclusively on dung were identified. The chronology is based upon two AMS radiocarbon dates (5745±90 BP and 7525±90 BP) and the correlation with regional data. The pollen diagram shows a succession of the main events of the vegetation history in this area during the Holocene. The expansion of Abies alba Mill, is dated to about 7500 BP. Human impact on this high alpine environment since the Subboreal is shown by the increase of some specific pollen-types and coprophilous fungal spores, which are used as grazing indicators. The synchronous increase of pollen-taxa richness with human impact is discussed.