From texts to teeth: A multi-isotope study of sheep and goat herding practices in the Late Bronze Age (‘Mycenaean’) polity of Knossos, Crete

Linear B administrative documents of the late second millennium BC from urban Knossos, Crete, reveal that spatially extensive and centrally monitored sheep flocks and wool production played a fundamental role in Mycenaean palatial economy. Here we employ multi-isotope (δ13C, δ18O, 87Sr/86Sr) analysis of sequentially sampled sheep and goat tooth enamel bioapatite to explore life histories of animals consumed at Knossos. Interpretation of isotopic results incorporates new baseline data on 87Sr/86Sr ratios of bioavailable Sr from modern Cretan plants collected in relevant zones. Results reveal a variety of herding regimes, including seasonal (‘wet/winter’ to ‘dry/summer’) vertical movement of sheep from lowland to highland locations, more restricted mobility for goats in lowland to mid-altitude territories, possible input of fodder to goat diet, and exploitation of a range of plant ecosystems. Results broadly match documentary evidence and ethnographic/ecological expectations for sheep and goat herding at varying scales and underline the role of Knossos in mobilising resources from a range of herding systems and territories.