Reconciling Pollen Limitation Theories: Insights From Temperate Oak Masting

IF 7.6 1区 环境科学与生态学 Q1 ECOLOGY
Ecology Letters Pub Date : 2024-12-02 DOI:10.1111/ele.70009
Emilie Fleurot, Léa Keurinck, Vincent Boulanger, François Debias, Nicolas Delpierre, Sylvain Delzon, Jean R. Lobry, Camille Mermet-Bouvier, Marie-Claude Bel-Venner, Samuel Venner
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Abstract

Pollen limitation has a considerable influence on forest masting, the highly variable and synchronised seed production, on which forest regeneration and ecosystem dynamics largely rely. Depending on the various mechanisms possibly involved in pollen limitation, the consequences of climate change on masting could be very different. These mechanisms were investigated in 10 oak populations along a climatic gradient using surveys of airborne pollen and fruiting rate as a proxy of pollen limitation. We found no support for the widely accepted hypothesis of the intra-annual synchrony of flower phenology when considered in isolation. Instead, the fruiting rate was largely explained by a combination of intra-annual flower phenology synchrony, annual investment in flowering and the effects of weather on pollen maturation and diffusion. These findings highlight the need for a cohesive theoretical framework for pollen limitation to accurately predict the impact of climate change on oak-dominated ecosystems.

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来源期刊
Ecology Letters
Ecology Letters 环境科学-生态学
CiteScore
17.60
自引率
3.40%
发文量
201
审稿时长
1.8 months
期刊介绍: Ecology Letters serves as a platform for the rapid publication of innovative research in ecology. It considers manuscripts across all taxa, biomes, and geographic regions, prioritizing papers that investigate clearly stated hypotheses. The journal publishes concise papers of high originality and general interest, contributing to new developments in ecology. Purely descriptive papers and those that only confirm or extend previous results are discouraged.
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