Determining seasonality of mussel collection from an early historic Inuit site, Labrador, Canada: Comparing thin-sections with high-resolution stable oxygen isotope analysis. (October 2018)

• Record Type: Journal Article
• Authors: Burchell, Meghan; Stopp, Marianne P.; Cannon, Aubrey; Hallmann, Nadine; Schöne, Bernd R.
• Is Part Of: Journal of archaeological science. Volume 21(2018)
• Page Start: 1215
• Page End: 1224
• Publication Date: 2018-10
• Subjects: Seasonality -- Stable oxygen isotopes -- Inuit -- Labrador -- Mussels -- Mollusk growth analysis -- Shell midden; Archaeology -- Periodicals; Archaeology -- Research -- Periodicals; 930.1
• DOI: 10.1016/j.jasrep.2018.02.016
• Languages: English
• ISSNs: 2352-409X

Abstract

Abstract: Stable oxygen isotope (δ 18 O) analysis of mussels ( Mytilus sp.) from a 16th to mid-18th century Inuit site in southern Labrador, Canada, indicates multiple seasons of shellfish collection, and by proxy, multiple seasons of site occupation. High-resolution δ 18 O sampling of shell permits a precise season of mussel collection since the temperature and freshwater signal of the local water is retained in the shell. Live-collected specimens of Mytilus sp. obtained from Labrador, were analyzed for stable oxygen isotopes and for growth patterns. These data were used to interpret results from the archaeological shells. Growth pattern analysis was conducted to test the relationship between δ 18 O values, growth lines and shell colour. Of the two approaches, high-resolution δ 18 O sampling proved to be more reliable for determining seasonality, and showed that the Inuit at Schooner Cove harvested mussels primarily during the spring months, with some harvesting evident in the winter and autumn. Highlights: A comparison of two different methods to determine seasonality of mussel collection High-resolution stable oxygen isotope sampling produces seasonal cycles. The colour of the shell does not correspond to stable oxygen isotope values. Historic-era Inuit of Labrador, Canada, collected mussels through multiple seasons.