Oxygen Isotopes and Shell Growth Data from Arctica Islandica

Fig. 2. Annual oxygen isotope (d¹⁸O_shell; blue) and growth increment width (black) data from Arctica islandica shells from the southern Barents Sea (Norway). Thin lines show annual data from individual shells, medium line shows annual average among replicates, and bold lines show a 21-year running mean of annual averages. At Ingøya, Norway, d¹⁸O_shellis primarily influenced by water temperature during shell precipitation, whereby lower values correspond to higher temperatures. Shell growth rate is related to food quality and food quantity in the local environment. Figure adapted from Mette et al. (2021).