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Scientists uncover complex population changes after Japan's ancient volcanic eruption

Natural disasters reshape human societies and ecosystems.

A massive volcanic eruption in Japan 7,300 years ago had varied effects on human populations. Some communities declined, while others adapted and grew. Researchers found that migration, new social structures, and innovations in resource use helped survivors thrive. The study highlights the complexity of post-disaster recovery and its broader ecological impacts.

  • The Kikai-Akahoya eruption caused both population decline and unexpected growth in different regions of Japan.
  • Survivors in northern Kyushu adapted by relocating to coastal areas with recovering marine resources.
  • Population changes were observed even in regions far from the eruption site, suggesting widespread effects.
  • Researchers from Lund University and Cambridge University analyzed archaeological data to understand these demographic shifts.