The Haldane Prize is awarded by the British Ecological Society each year for the best paper in Functional Ecology written by an early career author.

Here is the shortlist for the 2021 Haldane Prize.

• Alexander Austin: Solitary bee larvae prioritize carbohydrate over protein in parentally provided pollen
• Audrey Barker Plotkin: Defoliated trees die below a critical threshold of stored carbon
• Bálint Uveges: Chemical defence effective against multiple enemies: Does the response to conspecifics alleviate the response to predators?
• Benjamin Lejeune: Progenesis as an intrinsic factor of ecological opportunity in a polyphenic amphibian
• Carl Lundblad: Intraspecific variation in incubation behaviours along a latitudinal gradient is driven by nest microclimate and selection on neonate quality
• Eve Davidian: The interplay between social rank, physiological constraints and investment in courtship in male spotted hyenas
• Jian-Yong Wang: A meta-analysis of effects of physiological integration in clonal plants under homogeneous vs. heterogeneous environments
• Kelsey Shaw: Re-emphasizing mechanism in the community ecology of disease
• Laura Gomez: The influence of roots on mycorrhizal fungi, saprotrophic microbes and carbon dynamics in a low-phosphorus Eucalyptus forest under elevated CO2
• Lillian Tuttle: Differential learning by native versus invasive predators to avoid distasteful cleaning mutualists
• Max Mallen-Cooper: Tissue chemistry of biocrust species along an aridity gradient and comparison to vascular plant leaves
• Randall Long: Spenders versus savers: Climate-induced carbon allocation trade-offs in a recently introduced woody plant
• Ummat Somjee: Exaggerated sexually selected weapons maintained with disproportionately low metabolic costs in a single species with extreme size variation