Thursday, February 6, 2025

Forests became less diverse when ancient people started herding pigs

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A domestic pig in the New Forest, UK

9 Deborah Lee Rossiter/Shutterstock

Ancient DNA unearthed from a European rock shelter suggests that local herders tended goats and sheep more than 5000 years ago, but switched to primarily pigs 2000 years later – right about when the surrounding forests became much less biodiverse.

Although further research is needed, the findings hint that keeping pigs – which root the ground and are far less picky eaters than goats and sheep – might have played a role in how modern forests took shape. The discovery provides strong evidence that analysing ancient sedimentary DNA can…



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