Footprint beds record Holocene decline in large mammal diversity on the Irish Sea coast of Britain

Nat Ecol Evol. 2022 Oct;6(10):1553-1563. doi: 10.1038/s41559-022-01856-2. Epub 2022 Sep 26.

Abstract

Long-term monitoring along the Irish Sea coast of Britain at Formby has identified hundreds of animal and human footprints in 31 discrete sediment beds. A new programme of radiocarbon dating shows that the Formby footprints span at least 8,000 years of the Holocene Epoch from the Mesolithic period to Medieval times. In a landscape largely devoid of conventional archaeology and faunal records, we show how species data from the footprint stratigraphy document long-term change in both large mammal diversity and human behaviour. The footprint beds record shifting community structure in the native fauna through an era of profound global change. As sea levels rose rapidly in the Early Holocene, men, women and children formed part of rich Mesolithic intertidal ecosystems from ~9,000 to 6,000 cal BP, with aurochs, red deer, roe deer, wild boar, beaver, wolf and lynx. Doggerland was reclaimed by the sea in this period. In the agriculture-based societies that followed, after 5,500 cal BP human footprints dominate the Neolithic period and later beds, alongside a striking fall in large mammal species richness. Stacked footprint beds can form multimillennial records of ecosystem change with precise geographical context that cannot be retrieved from site-based fossil bone assemblages.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Archaeology
  • Child
  • Deer*
  • Ecosystem*
  • Female
  • Fossils
  • Humans
  • United Kingdom