Population collapse or human resilience in response to the 9.3 and 8.2 ka cooling events: A multi-proxy analysis of Mesolithic occupation in the Scheldt basin (Belgium)

•A multiproxy-approach is key to understanding regional demography.•Demography and mobility changed throughout the Mesolithic.•Possibly triggered by environmental and climate events.•The Middle Mesolithic is characterized by increased mobility and a population shift.•The Late Mesolithic testifies a reduction in population and mobility.