The study combines evidence from fossilized pollen, plant remains, charcoal, insects, and animal bones from the Miocene epoch through pre-industrial times. These records prove that massive grazing animals naturally suppressed thick vegetation, creating sunlit areas where birds, butterflies, and diverse species thrived for over 20 million years. Modern initiatives, such as Danish tree subsidies, ignore this baseline by heavily prioritizing uninterrupted woodland cover. Consequently, these well-meaning environmental initiatives threaten to undermine the very biodiversity they aim to restore.
Key points
Europe was primarily defined by open meadows and sparse woodlands rather than dense fores…: Europe was primarily defined by open meadows and sparse woodlands rather than dense forests for over 20 million years.
Modern conservation programs that exclusively favor thick canopy reforestation clash with…: Modern conservation programs that exclusively favor thick canopy reforestation clash with Europe's historical ecological baseline.
Planting continuous forests risks damaging native biodiversity that spent millions of yea…: Planting continuous forests risks damaging native biodiversity that spent millions of years adapting to sunlit, open environments.
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A sweeping 20-million-year study reveals that Europe's natural landscape was far more open and colorful than previously believed, raising troubling questions about today's massive tree-planting efforts.
- Date:
- November 7, 2026
- Source:
- Aarhus University
- Summary:
- Scientists have uncovered evidence that Europe was dominated for more than 20 million years by open woodlands, colorful meadows, and large grazing animals, not the dense forests long considered its natural state. The surprising discovery challenges modern reforestation strategies, suggesting that planting thick forests could actually harm the biodiversity conservationists hope to protect.
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