Multi-Isotopic Reconstruction of Prehistoric Diet and Trophic Organization in Cis-Baikal Using Zinc and Amino Acid Nitrogen Isotopes

Dataset: Multi-isotopic data (Zn, amino-acid nitrogen CSIA, bulk C/N, Sr) for prehistoric humans and fauna from Cis-Baikal, Siberia Associated manuscript Le Bras, G., Jessup, E., Lagane, C., Point, D., Schulting, R.J., van der Haas, V., Scharlotta, I., Mandrou, S., Goriunova, O.I., Bazaliiskii, V.I., Weber, A.W., Jaouen, K. “Multi-Isotopic Reconstruction of Prehistoric Diet and Trophic Organization in Cis-Baikal Using Zinc and Amino Acid Nitrogen Isotopes.” Submitted to the American Journal of Biological Anthropology (AJBA). [Corresponding authors: [e-mail], [e-mail]] Description This dataset contains zinc isotope ratios (δ66Zn), compound-specific amino acid nitrogen isotope values (δ15N-CSIA-AA), bulk carbon, nitrogen and strontium isotope data (δ13C, δ15N, 87Sr/86Sr), and associated sample metadata for prehistoric human individuals and faunal reference specimens (fish, seals, terrestrial herbivores and omnivores) from three archaeological microregions of the Cis-Baikal region (Angara, Southwest Baikal, Little Sea), Siberia. It also includes a binary dietary-trait matrix used for ecological clustering of fish species, and the isotopic values of laboratory reference materials analyzed alongside the samples. The data support the results reported in the associated manuscript (Tables 1-4, Figures 2-6) and its Supplementary Information (Tables S1-S5). Files Table_S3_isotopic_data.csv Specimen-level isotopic and analytical data (328 rows including header; 72 columns), one row per sample/analysis. Column groups: - Identifiers & provenance: ARCH (internal archive ID), Master ID, Submitter_ID, Microregion, Site, Animal_group, Species, Trophic_Diet, Sample_type_66Zn (tissue sampled for δ66Zn analysis), Sample_type_CSIA-AA (tissue sampled for amino-acid nitrogen CSIA; “Dentin collagen” for humans, “Bone_collagen” for fauna; filled only for specimens with CSIA-AA data), Tooth_number, Modern/Prehistoric (M/P), Phase, Group diet, SEX. - Sample preparation: Derivatized section, d15N_section, Start Mass for our study (mg), Spl Mass For Zn protocol (mg). - Zinc isotopes (this study): Zinc Mass Mean (ng), SD Zn Mass, Zinc_Concentration_ppm, d66Zn_raw, SD_d66Zn, d68Zn. - Bulk carbon/nitrogen (this study): %C_this_study, %N_this_study, d13C_this_study, d15N_this_study, CN_this_study. - Bulk carbon/nitrogen (previously published, compiled from BAP literature): %C_previously_measured, %N_previously_measured, d13C_previously_measured, d15N_previously_measured, CN_previously_measured, réf_CN_previously_measured. - Strontium isotopes (compiled/this study): M1/M2/M3_Sr_previously_measured, Bone_Sr_previously_measured, Sr_this_study_raw, Sr_this_study_corrected (all 87Sr/86Sr). - Dietary classification: Previously_identified_diet, identified_diet_this_study (SWB-GF/SWB-GFS). - Chronology: MeanCalDateBP_previously_measured, MeanCalDateError_previously_measured. - Derived/compiled values: d66Zn_bone_calculated, d66Zn_bone_or_bone-equivalent, d13C_mean_this_study_and_previously_measured, d15N_mean_this_study_and_previously_measured. - Amino acid-specific nitrogen isotopes (CSIA-AA): mean δ15N and SD for each amino acid (Ala, Asx, Glx, Gly, Hyp, Leu, Phe, Pro, Ser, Thr, Val) – columns d15N_mean and d15N_SD. Missing values indicate an analysis that was not performed or did not pass quality control for that specimen (see manuscript Section 2.3 and Supplementary Information for exclusion criteria). Table_S4_fish_dietary_matrix.csv Binary dietary-trait matrix for fish species (77 rows including header; 25 columns) used for NMDS ordination and k-means clustering of dietary strategies (manuscript Section 2.3.6/3.4.1). Columns: Species, d66Zn_bone_or_bone-eq (bone-equivalent δ66Zn value used in the clustering), followed by 21 binary (0/1) prey-category columns (Zooplankton, Phytoplankton, Insects, Crustaceans, Gastropod, Fish, Worms, Algae, Detritus, Benthos, Young Fish, Plant Material, Zoobenthos, Other Mollusks, Fish eggs, Insect larvae, Mammals, Amphibians, Birds, Other arthropods, Snakes) indicating presence (1) or absence (0) of that prey category in the species’ known diet, and the resulting Cluster (numeric) and Ecological_Cluster (descriptive label) assignments. Table_S5_reference_materials.csv Zinc isotope values obtained for laboratory reference materials analyzed alongside the samples, both in this study and, where relevant, in previous studies used for inter-laboratory comparison (122 rows including header). Columns: Sample (reference material name), d66Zn, SD inter sample, n (number of replicate analyses), Lab, ICPMS (instrument), Column step protocol (reference to the chemical purification protocol used).