Archaeological excavations of historical fishing sites across the North Atlantic have recov- ered high quantities of Atlantic cod (Gadus morhua) bones. In the current study we use Atlantic cod otoliths from archaeological excavations of a historical fishing sites in north- west Iceland, dated to AD 970 –AD 1910 to examine historical growth trajectories of cod. No large scale growth variations or shifts in growth patterns were observed in the current chro- nologies, supporting the stability of historical Atlantic cod growth trajectories. The most sig- nificant variation in growth patterns was consistent with those that have been observed in recent times, for example, reduced early juvenile growth during periods of colder ocean tem- perature. The current results represent a high resolution chronological record of north-east Atlantic cod growth, greatly increasing the prior temporal range of such data, thereby provid- ing a valuable baseline for a broad range of studies on Atlantic cod growth.
Ólafsdóttir, G. Á., Pétursdóttir, G., Bárðarson, H., & Edvardsson, R. (2017). A millennium of north-east Atlantic cod juvenile growth trajectories inferred from archaeological otoliths. PLoS ONE, 12(10). https://doi.org/10.1371/journal.pone.0187134