Why Do These Trees Refuse to Touch?

Crown shyness is a phenomenon where tree crowns avoid touching, creating gaps in the canopy. It occurs in specific species and conditions. Hypotheses include wind-induced contact, shade response, and allelopathy. Wind may cause branches to break, limiting growth. Shade affects light absorption, promoting upward growth. Allelopathy suggests chemical compounds influence neighboring trees, though unproven. Multiple mechanisms likely contribute to crown shyness.

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