The researchers studied 16 tree species in a forest in Japan to see if their seed production was synchronized. They found that species with synchronized flowering had bigger fluctuations in seed production. Some species had highly synchronized seed production, even across different families. This synchronization may help seeds survive predators before dispersal. Wind-pollinated species benefited from efficient pollination at the population level. However, predator satiation after seed dispersal was not as clear. Factors like weather, similar flowering physiology, and ecological advantages may cause multiple species to have synchronized seed production patterns.