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Changes in phenology mediate vertebrate population responses to temperature globally
Article de revue scientifique   Open Access   Avec comité de lecture

Changes in phenology mediate vertebrate population responses to temperature globally

Viktoriia Radchuk, Carys V Jones, Nina Mclean, Anne Charmantier, Céline Teplitsky, Ray Alisauskas, Sergio Ancona, Tycho Anker-Nilssen, Peter Arcese, Debora Arlt, …
Nature Communications, Vol.17
12/01/2026
PMCID: PMC12800269
PMID: 41526389

Résumé

Phenotypic responses to climate affect individual fitness, but the extent to which this translates into effects on population dynamics remains poorly understood. We assemble 213 time series on phenotypes and population sizes of wild vertebrates globally and match them with local climate data. Our meta-analysis shows that morphological traits are mostly climate insensitive. However, phenology is earlier in warmer-than-average years, which contributes positively to population growth in most species. At lower latitudes, temperature has weaker effects on phenology but stronger direct negative effects on population growth, likely because these populations are less capable of tracking climate via plasticity. Variation in the phenology-mediated effect of temperature on population growth cannot be explained by latitude, generation time, migratory mode, or diet. This suggests that simple relationships between species characteristics and population responses to warming may not occur in nature. Instead, we may need to embrace ecological complexity by considering local-scale predictors that capture intra-specific variation.

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