marginally non-significantp = 0.095
A marginally non-significant trend was noted for the 1300–1499 CE interval within the mediterranean-like context (β = 0.691, p = 0.095) These results indicate that δ 13 C provides a more robust signal of environmental variation in diet among island populations in the Canaries, whereas δ 15 N appears more stable over time (Fig. 5 ).