Echoes of the Nuragic Bronze

The Nuragic Bronze Age of Sardinia unfolds like a landscape of stone and sea: circular towers (nuraghi), coastal harbors and rocky inland refuges persist in the archaeological record. Sites included in this dataset—S'Orcu 'e Tueri (Perdasdefogu, NUO), Riparo sotto roccia Su Asedazzu and Su Cannisoni (Seulo, CA), Ingurtosu Mannu (Donori, CA) and Is Arutas (Cabras, OR)—date between 1532 and 922 BCE and belong to the long arc of Sardinian Bronze Age culture.

Archaeological data indicate continuity from earlier Neolithic and Copper Age communities: megalithic building traditions and local pottery styles evolve into distinct Nuragic material culture. The island's insularity promoted regional distinctiveness while maritime contacts with the western Mediterranean introduced new metals, styles, and possibly small-scale population movements. Limited evidence suggests these external interactions were episodic rather than large-scale population replacements. The material record—nuraghi foundations, fortifications, and rock-shelter assemblages—documents a society reorganizing around communal and defensive architecture, pastoralism, and burgeoning metallurgy.

While the archaeological narrative is robust, linking specific cultural shifts to discrete migrations remains challenging: chronology is improving, but many questions about the pace and direction of contact remain open.

Ancient DNA from 16 individuals (n=16) dated 1532–922 BCE provides a window into Nuragic population dynamics. Overall patterns align with strong continuity from Neolithic Anatolian-derived farmers—the dominant ancestry component in Sardinia through the Bronze Age—while showing modest and regionally variable influxes of other lineages.

Y-chromosome markers in this sample set are diverse: haplogroup R is the most frequent (5 individuals), followed by J (3), G (2) and I (1). This distribution suggests a mixture of long-standing island male lineages and incoming paternal inputs; precise subclade assignments would clarify whether R represents local branches or steppe-associated variants, but such detail is not available here. Mitochondrial DNA likewise reflects continuity with European farmer lineages: H1 (4), various H (2), J (3), T (3) and K (1) are common—haplogroups that are widespread in later European populations and in modern Sardinians.

Autosomal signals (broadly summarized) indicate predominant Neolithic farmer ancestry with limited steppe-related admixture compared with continental Bronze Age groups. This pattern is consistent with archaeological evidence for sustained island continuity and episodic external contacts. Because sample size (16) is modest and unevenly distributed across sites, conclusions about fine-scale demographic events should be considered preliminary. Further sampling and subclade resolution would refine models of migration, sex-biased mobility and regional structuring.