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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Divergence of reproductive phenology under climate warming
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Divergence of reproductive phenology under climate warming

机译：气候变暖下生殖物候的差异

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摘要

Because the flowering and fruiting phenology of plants is sensitive to environmental cues such as temperature and moisture, climate change is likely to alter community-level patterns of reproductive phenology. Here we report a previously unreported phenomenon: experimental warming advanced flowering and fruiting phenology for species that began to flower before the peak of summer heat but delayed reproduction in species that started flowering after the peak temperature in a tallgrass prairie in North America. The warming-induced divergence of flowering and fruiting toward the two ends of the growing season resulted in a gap in the staggered progression of flowering and fruiting in the community during the middle of the season. A double precipitation treatment did not significantly affect flowering and fruiting phenology. Variation among species in the direction and magnitude of their response to warming caused compression and expansion of the reproductive periods of different species, changed the amount of overlap between the reproductive phases, and created possibilities for an altered selective environment to reshape communities in a future warmed world.
机译：由于植物的开花和结实物候对温度和湿度等环境线索敏感，因此气候变化可能会改变社区水平的生殖物候模式。在这里，我们报告了一个以前未曾报道过的现象：实验升温导致了在夏季热高峰之前开始开花但在北美高草草原温度达到峰值后开始开花的物种的繁殖延迟。气候变暖导致的开花结果在生长期的两端向发散，导致该季节中期社区开花结果的交错进展出现了缺口。双重沉淀处理并未显着影响开花和结果物候。物种之间在对变暖的响应方向和幅度上的变化导致不同物种的生殖期压缩和扩展，改变了生殖阶段之间的重叠量，并为改变选择性环境创造了可能性，以在未来变暖的环境中重塑群落。世界。

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