HOLOCENE VEGETATION DYNAMICS IN MEDITERRANEAN IBERIA Historical Contingency and Climate-Human Interactions.

In this paper we illustrate how different internal and external forcings conditioned postglacial vegetation in southern Mediterranean areas. By comparing seven Holocene sequences, we emphasize the role of glacial refugia as postglacial vegetation dispersal centers. We also identify the importance of the system's inertia in the time lags observed for vegetation response to climate change and human pressure. Finally, we explore the cascade of effects triggered by the human-climate interface, specifically the vegetation and the environmental feedbacks implicated in the collapse of the Argaric culture that emerged in arid southeastern Spain about 4,000 years before the present. [ABSTRACT FROM AUTHOR]