Exploring seven hundred years of transhumance,climate dynamic,fire and human activity through a historical mountain pass in central Spain |
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| Authors: | José Antonio López-Sáez Francisca Alba-Sánchez Sandra Robles-López Sebastián Pérez-Díaz Daniel Abel-Schaad Silvia Sabariego-Ruiz Arthur Glais |
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| Institution: | 1.Research Group Archaeobiology,Institute of History, CSIC,Madrid,Spain;2.Dept. Botany, Faculty of Sciences,University of Granada,Granada,Spain;3.Dept. of Plant Biology, Faculty of Biology,Complutense University,Madrid,Spain;4.LETG CAEN GEOPHEN-UMR 6554 CNRS,University of Caen-Normandie,Caen Cedex 5,France |
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| Abstract: | A high-altitude peat sequence from the heart of the Spanish Central System (Gredos range) was analysed through a multi-proxy approach to determine the sensitivity of high-mountain habitats to climate, fire and land use changes during the last seven hundred years, providing valuable insight into our understanding of the vegetation history and environmental changes in a mountain pass close to a traditional route of transhumance. The pollen data indicate that the vegetation was dominated by shrublands and grasslands with scattered pines in high-mountain areas, while in the valleys cereals, chestnut and olive trees were cultivated. Strong declines of high-mountain pines percentages are recorded at 1540, 1675, 1765, 1835 and 1925 cal AD, which may be related to increasing grazing activities and/or the occurrence of anthropogenic fires. The practice of mountain summer farming and transhumance deeply changed and redesigned the landscape of the high altitudes in central Spain (Gredos range) since the Middle Ages, although its dynamics was influenced in some way by climate variability of the past seven centuries. |
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