Climatic and human effects on the post-glacial dynamics of Fagus sylvatica L. in NW Iberia
Autor: Muñoz Sobrino, C.; Ramil-Rego, P. & Gómez-Orellana, L.; Ferreiro da Costa, J. & Díaz Varela, R.A.
Our aim is to determine the population dynamics of Fagus sylvatica L. during the last 4,000 cal. BP in NW Iberia and the causes of its spatial and temporal patterns, previous palaeoecological studies having shown that between the Upper Pleistocene and the recent Holocene Fagus survived in this region. A number of pollen sites have allowed a reconstruction of the regional dynamics of Fagus from the Last Glaciation to the present. Specifically, two high-resolution pollen sequences located in both extremes of the Cantabrian region were analysed to discuss the beech forest dynamics during the last four millennia. Beech pollen percentages increased progressively to dominant species levels in eastern Cantabria, but only brief, minor increases are recorded in the west, where they never exceeded 2%.