- Handling the heat – photosynthetic thermal stress in tropical trees

Among‐sites and ‐species variation in (a) critical temperature (Tcrit, °C) and the temperatures at which the Fv/Fm is reduced by (b) 20% (T20, °C) and (c) 50% (T50, °C) compared to nonheat stressed conditions. Hmo, Harungana montana (white); Sgu, Syzygium guineense (cyan); Eex, Entandrophragma exselsum (green). Data are shown as mean ± SE of the fitted temperature values. Upper case letters indicate significant among‐sites differences within each species (P = 0.05). Lower case letters indicate significant among‐species differences within each site (P = 0.05). The statistical comparisons among the groups were made using Welch's t‐tests and are detailed in Supporting Information Tables S3–S5.

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Handling the heat – photosynthetic thermal stress in tropical trees - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Among-sites-and-species-variation-in-a-critical-temperature-Tcrit-C-and-the_fig4_355399649 [accessed 14 May 2025]

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Among‐sites and ‐species variation in (a) critical temperature (Tcrit, °C) and the temperatures at which the Fv/Fm is reduced by (b) 20% (T20, °C) and (c) 50% (T50, °C) compared to nonheat stressed conditions. Hmo, Harungana montana (white); Sgu, Syzygium guineense (cyan); Eex, Entandrophragma exselsum (green). Data are shown as mean ± SE of the fitted temperature values. Upper case letters indicate significant among‐sites differences within each species (P = 0.05). Lower case letters indicate significant among‐species differences within each site (P = 0.05). The statistical comparisons among the groups were made using Welch's t‐tests and are detailed in Supporting Information Tables S3–S5.

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<a href="https://www.researchgate.net/figure/Among-sites-and-species-variation-in-a-critical-temperature-Tcrit-C-and-the_fig4_355399649"><img src="https://www.researchgate.net/publication/355399649/figure/fig4/AS:11431281249874250@1717675883588/Among-sites-and-species-variation-in-a-critical-temperature-Tcrit-C-and-the.png" alt="Among‐sites and ‐species variation in (a) critical temperature (Tcrit, °C) and the temperatures at which the Fv/Fm is reduced by (b) 20% (T20, °C) and (c) 50% (T50, °C) compared to nonheat stressed conditions. Hmo, Harungana montana (white); Sgu, Syzygium guineense (cyan); Eex, Entandrophragma exselsum (green). Data are shown as mean ± SE of the fitted temperature values. Upper case letters indicate significant among‐sites differences within each species (P = 0.05). Lower case letters indicate significant among‐species differences within each site (P = 0.05). The statistical comparisons among the groups were made using Welch's t‐tests and are detailed in Supporting Information Tables S3–S5."/></a>