Voices of the Ukrainian Mesolithic

Across the flat, marshy plains and slow rivers of central Ukraine, the first light of the Mesolithic era lingers in hearth lenses and chipped flint. Archaeological data indicates human presence here from at least c. 10509 BCE (oldest sampled individual) through the later Mesolithic around 5921 BCE. Key sites sampled include Vasil'evka (a series of open-air camps), Dereivka I, Vasylivka-1 and Vasylivka-3 (Dnipropetrovsk and Zaporizhia oblasts), and Deriivka (Kirovohrad oblast).

Material culture — microlithic tools, fishing gear, and hearth-built camps — speaks of river-focused economies. Environmental reconstructions indicate riparian forests, abundant fish and game, and seasonal mobility along the Dnieper and tributaries. Archaeological evidence suggests continuity with broader Eastern Hunter‑Gatherer (EHG) networks while also reflecting local adaptations to steppe-forest ecotones.

Genomic analyses of 20 individuals from these sites provide a biological dimension to emergence narratives: patterns are consistent with predominant EHG-related ancestry but not homogeneous across sites or time. Limited evidence of genetic diversity hints at contacts beyond the immediate region. While these results illuminate origins, ongoing sampling and contextual excavation remain essential to refine migration and interaction models.

Genome-wide data from 20 Mesolithic individuals across Ukrainian sites reveal a genetic portrait that largely aligns with Eastern Hunter‑Gatherer (EHG) ancestry components. Mitochondrial DNA is dominated by haplogroup U (10 of 20), with additional U subclades (U4, U4b, U2e) and H lineages—typical of European hunter‑gatherers and indicative of maternal continuity in Mesolithic populations.

Y‑chromosome diversity includes haplogroup I (6 individuals), R (4), Q (2), F (1) and R1b (1). The presence of I and R lineages fits broader Mesolithic European patterns; Q and minor R1b occurrences point to more complex paternal contacts or micro‑regional variation. These counts should be interpreted cautiously: while 20 samples allow robust signals for dominant patterns (notably mtDNA U and Y I), less frequent haplogroups are represented by small numbers and may reflect either rare lineages or sampling of transient individuals.

Population genetics analyses place these individuals within a continuum of EHG-related ancestry, with possible local admixture and intermittent gene flow from neighboring forager groups. Archaeogenetic results therefore connect the material lifeways of Vasil'evka and Dereivka camps to wider population dynamics shaping northeastern European foragers during the early to mid-Holocene.