Isotope analysis of the bones of inhabitants shows that marine food sources supplied more and more of the diet of the Norse Greenlanders, making up between 50% and 80% of their diet by the 14th century.
Men isotopanalyser af indbyggernes knogler viser dog, at marine fødekilder leverede mere og mere af de norrøne grønlænderes kost, op mod 50 til 80% af føden ved udgangen af det 14. århundrede.