Thursday 5 March 2020

Over-hunting walruses contributed to the collapse of Norse Greenland, study suggests


JANUARY 6, 2020


The mysterious disappearance of Greenland's Norse colonies sometime in the 15th century may have been down to the overexploitation of walrus populations for their tusks, according to a study of medieval artefacts from across Europe.

Founded by Erik the Red around 985AD after his exile from Iceland (or so the Sagas tell us), Norse communities in Greenland thrived for centuries—even gaining a bishop—before vanishing in the 1400s, leaving only ruins.

Latest research from the universities of Cambridge, Oslo and Trondheim has found that, for hundreds of years, almost all ivory traded across Europe came from walruses hunted in seas only accessible via Norse settlements in south-western Greenland.

Walrus ivory was a valuable medieval commodity, used to carve luxury items such as ornate crucifixes or pieces for games like chess and Viking favourite hnefatafl. The famous Lewis chessmen are made of walrus tusk.

However, the study also indicates that, as time wore on, the ivory came from smaller animals, often female; with genetic and archaeological evidence suggesting they were sourced from ever farther north—meaning longer and more treacherous hunting voyages for less reward.

Increasingly globalised trade saw elephant ivory flood European markets in the 13th century, and fashions changed. There is little evidence of walrus ivory imports to mainland Europe after 1400.

Dr. James H. Barrett, from the University of Cambridge's Department of Archaeology, argues that the Norse abandonment of Greenland may have been precipitated by a "perfect storm" of depleted resources and volatile prices, exacerbated by climate change.


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