FLEUROT, Emilie; KEURINCK, Léa; BOULANGER, Vincent; DEBIAS, François; DELPIERRE, Nicolas; DELZON, Sylvain; LOBRY, Jean; MERMET-BOUVIER, Camille; BEL-VENNER, Marie‐claude; VENNER, Samuel

doi:10.1111/ele.70009

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FLEUROT, Emilie
Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 [LBBE]

KEURINCK, Léa
Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 [LBBE]

BOULANGER, Vincent
Recherche, développement et innovation [ONF-RDI]

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Ecology Letters. 2024-12-02, vol. 27, n° 11, p. e70009

Wiley

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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.< Réduire

Mots clés en anglais

masting

Moran effect

phenological synchrony

pollen coupling

pollen limitation

pollen phenology

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Reconciling Pollen Limitation Theories: Insights From Temperate Oak Masting

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