ArticleTree physiology2023
Similar patterns of leaf temperatures and thermal acclimation to warming in temperate and tropical tree canopies.
Article in Tree physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Photosynthetic responses to temperature across the tropics: a meta-analytic approach.Annals of botany · 2025Pooled it
- Increasingly severe thermal stresses on global photosynthesis using insights from observations of canopy temperature.National science review · 2026Article
- Leaf temperature and its departure from ambient air temperature.Nature plants · 2026Review
- Article
- Photosynthetic Heat Tolerance Partially Acclimates to Growth Temperature in Tropical Montane Tree Species.Plant, cell & environment · 2025Article
- Elevated COGlobal change biology · 2025Article
- Unexpected Large Photosynthetic Thermal Plasticity of Montane Andean Trees.Global change biology · 2025Article
- Tropical Forest Soil Microbiome Modulates Leaf Heat Tolerance More Strongly Under Warming Than Ambient Conditions.Ecology and evolution · 2025Article
- Ecotypic Variation in Leaf Thermoregulation and Heat Tolerance but Not Thermal Safety Margins in Tropical Trees.Plant, cell & environment · 2025Article
Corrections and comments
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
As the global climate warms, a key question is how increased leaf temperatures will affect tree physiology and the coupling between leaf and air temperatures in forests. To explore the impact of increasing temperatures on plant performance in open air, we warmed leaves in the canopy of two mature evergreen forests, a temperate Eucalyptus woodland and a tropical rainforest. The leaf heaters consistently maintained leaves at a target of 4 °C above ambient leaf temperatures. Ambient leaf temperatures (Tleaf) were mostly coupled to air temperatures (Tair), but at times, leaves could be 8-10 °C warmer than ambient air temperatures, especially in full sun. At both sites, Tleaf was warmer at higher air temperatures (Tair > 25 °C), but was cooler at lower Tair, contrary to the 'leaf homeothermy hypothesis'. Warmed leaves showed significantly lower stomatal conductance (-0.05 mol m-2 s-1 or -43% across species) and net photosynthesis (-3.91 μmol m-2 s-1 or -39%), with similar rates in leaf respiration rates at a common temperature (no acclimation). Increased canopy leaf temperatures due to future warming could reduce carbon assimilation via reduced photosynthesis in these forests, potentially weakening the land carbon sink in tropical and temperate forests.
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Registered trials
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