We present Isotòpia, an open-access database compiling over 36,000 stable isotope measurements (δ13C, δ15N, δ18O, δ34S, 87Sr/86Sr, 206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb, 207Pb/206Pb, and 208Pb/206Pb) on human, animal, and plant bioarchaeological remains dating to Classical Antiquity (approximately 800 BCE - 500 CE). These were recovered from different European regions, particularly from the Mediterranean. Isotòpia provides a comprehensive characterisation of the isotopic data, encompassing various historical, archaeological, biological, and environmental variables. Isotòpia is a resource for meta-analytical research of past human activities and paleoenvironments. The database highlights data gaps in isotopic classical archaeology, such as the limited number of isotopic measurements available for plants and animals, limited number of studies on spatial mobility, and spatial heterogeneity of isotopic research. As such, we emphasise the necessity to address and fill these gaps in order to unlock the reuse potential of this database.

ArchaeoBioCenter Ludwig Maximilians Universität München München Germany

Arne Faculty of Arts Masaryk University Brno střed Czech Republic

Climate Change and History Research Initiative Princeton University Princeton NJ United States of America

Department of Archaeology Max Planck Institute of Geoanthropology Jena Germany

Dipartimento di Biologia Ambientale and Mediterranean bioArchaeological Research Advances Centre Sapienza University of Rome Roma Italy

Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche Centre Università degli Studi della Campania Luigi Vanvitelli Caserta Italy

Faculty of Archaeology University of Warsaw Warsaw Poland

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