The synchronization of seed production by trees has garnered attention due to its importance in agriculture, forestry and ecosystem management. Acorns shed by oak trees, for example, are an important source of food for wildlife, while crop trees such as citrus and pistachio nuts contribute to both human nutrition and the economy. Both oaks and citrus trees show synchronization of seed production, yet the cycles differ, with oaks showing irregular seed synchronization, while citrus show a distinct two-year cycle, known as alternate bearing.
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Source: Phys.org