Scaling flowering onset and duration responses among species predicts phenological community reassembly under warming

IF 2.7 3区 环境科学与生态学 Q2 ECOLOGY
Ecosphere Pub Date : 2025-03-28 DOI:10.1002/ecs2.70070
Tadeo H. Ramirez-Parada, Isaac W. Park, Sydne Record, Charles C. Davis, Susan J. Mazer
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Abstract

Global warming has caused widespread shifts in plant phenology among species in the temperate zone, but it is unclear how population-level responses will scale to alter the structure of the flowering season at the community level. This knowledge gap exists largely because—while the climatic sensitivity of first flowering within populations has been studied extensively—little is known about the responsiveness of the duration of a population's flowering period. This limits our ability to anticipate how the entire flowering periods of co-occurring species may continue to change under warming. Nonetheless, flowering sensitivity to temperature often varies predictably among species between and within communities, which may help forecast temperature-related changes to a community's flowering season. However, no studies—empirical or theoretical—have assessed how patterns of variation in flowering sensitivity among species could scale to alter community-level flowering changes under warming. Here, we provide a conceptual overview of how variation in the sensitivity of flowering onset and duration among species can mediate changes to a community's flowering season due to warming trends. Specifically, we focus on the effects of differences in (1) the mean sensitivity of flowering onset and duration among communities and (2) the sensitivity of flowering onsets and durations among species flowering sequentially through the season within a community. We evaluated the manner and degree in which these forms of between-species variation in sensitivity might affect the structure of the flowering season—both independently and interactively—using simulations, which covered a wide but empirically informed range of parameter values and combinations representing distinct community-level patterns. Our findings predict that communities across the temperate zone will exhibit varied and often contrasting flowering responses to warming across biomes, underscoring that accounting for the temperature sensitivity of both phenological onset and duration among species is essential for understanding community-level flowering dynamics in a warming world.

Abstract Image

物种间开花开始和持续时间的尺度反应预测了变暖条件下物候群落的重组
全球变暖引起了温带物种间植物物候的广泛变化,但目前尚不清楚种群水平的反应将如何扩大到改变群落水平上开花季节的结构。这种知识差距的存在很大程度上是因为,尽管对种群内首次开花的气候敏感性进行了广泛的研究,但对种群花期持续时间的响应性知之甚少。这限制了我们预测共生物种的整个花期在变暖下如何继续变化的能力。尽管如此,开花对温度的敏感性在群落之间和群落内部的物种之间通常是可预测的,这可能有助于预测群落开花季节的温度相关变化。然而,没有研究——实证的或理论的——评估物种之间开花敏感性的变化模式如何在变暖的情况下改变群落水平的开花变化。在这里,我们提供了一个概念性的概述,在物种之间的开花开始和持续时间的敏感性的变化如何介导一个群落的开花季节的变化,由于变暖趋势。具体而言,我们重点研究了(1)群落间开花开始和持续时间的平均敏感性和(2)群落内开花开始和持续时间随季节顺序的物种敏感性差异的影响。我们评估了这些物种间敏感性变化可能影响开花季节结构的方式和程度——无论是独立的还是相互作用的——使用模拟,这些模拟涵盖了广泛但经验丰富的参数值范围和组合,代表了不同的群落水平模式。我们的研究结果预测,温带地区的群落将对不同生物群系的变暖表现出不同的、往往是截然不同的开花响应,强调了物种之间物候开始和持续时间的温度敏感性对于理解变暖世界中群落水平的开花动态至关重要。
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来源期刊
Ecosphere
Ecosphere ECOLOGY-
CiteScore
4.70
自引率
3.70%
发文量
378
审稿时长
15 weeks
期刊介绍: The scope of Ecosphere is as broad as the science of ecology itself. The journal welcomes submissions from all sub-disciplines of ecological science, as well as interdisciplinary studies relating to ecology. The journal''s goal is to provide a rapid-publication, online-only, open-access alternative to ESA''s other journals, while maintaining the rigorous standards of peer review for which ESA publications are renowned.
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