Forest tree fecundity declines as climate shifts

Nature Climate Change, Published online: 12 May 2026; doi:10.1038/s41558-026-02638-5The authors use 34 years of seed harvest data from Poland, covering over 40,000 observations and five common species, to understand the impacts of climate change on tree fecundity. They show reduced fecundity across all species, with hotter summers as the dominant driver.

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