Scientists solve why tall and short trees thrive together in forests
Researchers from Kyoto University have discovered that trees of different sizes coexist in old-growth forests by balancing light interception efficiency and light use efficiency. This finding challenges the traditional view of forest succession as a simple competition for height and sunlight.
Updated: July 10, 2026 1 min read Follow us on Share this Article Forests are commonly thought of as arenas dominated by height, where the biggest trees hoard sunlight, hoping to turn their smaller neighbors into shadows. So violent is the competition in these early years that this stem-exclusion phase plays out brutally: shorter trees die, leaving a canopy dominated by giants.
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