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Thermal safety margins predict species vulnerability to heatwaves

Western Sydney University
Prokopavicius, Renee ; Backes, Diana
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.6084/m9.figshare.29345549.v1&rft.title=Thermal safety margins predict species vulnerabilty to heatwaves&rft.identifier=10.6084/m9.figshare.29345549.v1&rft.publisher=Figshare&rft.description=We grew 50 diverse tree and shrub species in controlled glasshouses and exposed them to a six-day heatwave (peak air temperature =41 °C), measuring their maximum leaf temperature (Tleaf_max) and their leaf critical temperature (Tcrit) to estimate thermal safety margins (TSM). All plants were well-watered. Baseline physiological measurements were conducted in the week prior to the experimental +7 °C heatwave under 34 °C. Measurements during the heatwave were collected on day 5 or 6, or in the case of Tleaf_max, on a single sunny day. All measurements were conducted on recently developed and fully-expanded leaves. For more information, see the publication in Plant, Cell & Environment at 10.3390/toxins17070334 .&rft.creator=Prokopavicius, Renee &rft.creator=Backes, Diana &rft.date=2025&rft.relation=https://doi.org/10.3390/toxins17070334&rft.coverage=&rft_rights=Copyright Western Sydney University&rft_rights=CC BY 4.0: Attribution 4.0 International http://creativecommons.org/licenses/by/4.0&rft_subject=Thermal safety margin&rft_subject=Leaf critical temperature&rft_subject=Maximum leaf temperature&rft_subject=Maximum quantum yield of PS II (Fv/Fm)&rft_subject=Visible injury&rft_subject=Plant physiology&rft_subject=Plant biology&rft_subject=BIOLOGICAL SCIENCES&rft.type=dataset&rft.language=English Access the data
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We grew 50 diverse tree and shrub species in controlled glasshouses and exposed them to a six-day heatwave (peak air temperature =41 °C), measuring their maximum leaf temperature (Tleaf_max) and their leaf critical temperature (Tcrit) to estimate thermal safety margins (TSM). All plants were well-watered. Baseline physiological measurements were conducted in the week prior to the experimental +7 °C heatwave under 34 °C. Measurements during the heatwave were collected on day 5 or 6, or in the case of Tleaf_max, on a single sunny day. All measurements were conducted on recently developed and fully-expanded leaves. For more information, see the publication in Plant, Cell & Environment at 10.3390/toxins17070334 .

Created: 2025-06-18

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Biological Sciences | Leaf critical temperature | Maximum leaf temperature | Maximum quantum yield of PS II (Fv/Fm) | Plant Biology | Plant Physiology | Thermal safety margin | Visible injury |

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