Researchers Thomas J. Snyder and Haagen D. Klaus examined human remains from 30 archaeological sites in Peru's Lambayeque Valley to compare skeletal trauma with historical water availability and flooding records. Although agricultural damage and food disruptions occurred regularly, the team found no significant statistical link between environmental stress and physical trauma. Furthermore, 77 individuals in the sample suffered accidental injuries, while violence rates showed no clear disparity between men and women. The authors theorized that access to marine resources and specialized social structures helped these communities maintain internal stability.
Key points
Resource scarcity and El Niño-induced flooding did not lead to an increase in everyday in…: Resource scarcity and El Niño-induced flooding did not lead to an increase in everyday interpersonal violence among ancient northern coastal communities.
Organized ritual practices such as mass human sacrifices at Moche and Sicán sites were di…: Organized ritual practices such as mass human sacrifices at Moche and Sicán sites were distinct from broader community-level conflict.
Access to coastal marine food sources and cohesive economic systems likely helped ancient…: Access to coastal marine food sources and cohesive economic systems likely helped ancient populations weather recurring climate crises without widespread fighting.
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Ancient communities living along Peru's northern coast experienced devastating floods, food shortages and periods of mass human sacrifice, yet everyday violence remained remarkably uncommon. A new study published in Frontiers in Environmental Archaeology, also reported by science platforms Phys dot org and Scimex, has found that only a small fraction of people living in the Lambayeque Valley showed physical evidence of interpersonal violence over more than 3,000 years. The findings offer a different perspective on how human societies respond to environmental disasters, suggesting that climate-related hardship does not necessarily lead to widespread conflict. The research, titled Pax Lambayeque? Trauma, Interpersonal Violence, and Environment over 3,000 Years in the Lambayeque Valley Complex, Peru, was conducted by researchers Thomas J Snyder of New York University and Haagen D Klaus of George Mason University. The team examined skeletal remains from 30 archaeological sites, using evidence preserved in bones to understand how people experienced violence, accidents and environmental changes.
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