New research published in the Journal of Environmental History utilizes ultra-high-resolution dendrochronology (tree-ring dating) to reveal the survival strategies of the Moche culture during a catastrophic 30-year drought in the 6th century CE. The study shows that the Moche successfully pivoted from large-scale irrigation of maize to drought-resistant tuber cultivation and expanded maritime resource harvesting.
By analyzing isotopic signatures in the wood of ancient algarrobo trees, scientists identified a significant shift in labor organization toward the construction of deep-water wells and communal grain silos. This 'climate archaeology' breakthrough highlights the resilience of pre-Columbian societies and offers modern lessons in adaptive water management for arid regions.