A LATE MESOLITHIC FORAGER DISPERSAL CAUSED PRE‐AGRICULTURAL DEMOGRAPHIC TRANSITION IN NORWAY

Abstract

SummaryPopulation growth has always played a key role in human mobility, even before the age of farming and husbandry. This paper explores population dynamics among early Holocene (∼9500–1700 cal BCE) hunter‐fisher‐gatherers in Southern Norway, focusing in particular on the Mesolithic‐Neolithic transition (4000/3900 cal BCE). Radiocarbon dates are calibrated and turned into summed probability distributions (SPDs). A heuristic linear method is used to calculate annual growth rates from the SPDs. Observed fluctuations in the SPDs are tested for significance by applying a Monte Carlo‐based simulation method. The paper finds evidence of a steady growth rate from the Boreal period until a sudden population trough at ∼4330–4300 cal BCE. The trough coincides with indications from the archaeological record of a dispersal of hunter‐fisher‐gatherers from Southern Scandinavia to Norway. The dispersal was likely an effect of lowered habitat suitability and social stress caused by population pressure among Southern Scandinavian hunter‐fisher‐gatherers. In Southern Norway, the proxy data show that the trough enabled a subsequent ‘boom’ in population and the emergence of regional technological innovations that define the Mesolithic‐Neolithic transition.