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| Home > Publications database > Contrasting temperature response of photosynthesis in early- and late-successional tree species from a reforested Neotropical forest |
| Home > Publications database > Contrasting temperature response of photosynthesis in early- and late-successional tree species from a reforested Neotropical forest |
| Journal Article | FZJ-2026-00180 |
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2026
Springer Science + Business Media B.V
Dordrecht [u.a.]
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Please use a persistent id in citations: doi:10.1007/s11056-025-10152-3
Abstract: The Atlantic Forest is critically threatened by habitat fragmentation, requiring various restoration efforts to restore essential ecosystem functions. However, with the projected rise in extreme weather events such as heatwaves and droughts, the success of ecological restoration will depend on species’ ability to perform at higher temperatures. To better understand the thermal response of tree species in restored Atlantic Forest areas, we measured carbon assimilation under saturating light (Asat), the maximum rate of RuBP carboxylation (VCmax), the rate of electron transport (Jmax), and stomatal conductance (gs) in six species from contrasting successional groups in a restored area, across a range of leaf temperatures to determine their thermal optima for each parameter (TOptA, TOptV, TOptJ, and TOpgs, respectively). We tested the difference in thermal optima between early- and late-successional species and examined stomatal and biochemical control over TOptA. As a result, no significant differences were found in the photosynthetic thermal optimum between successional groups. Additionally, TOptgs was most strongly correlated with TOptA. However, TOptA in early successional species exhibited a stronger relationship with TOptJ, which contradicts findings in the literature for tropical biomes. These contrasting results raise important questions about the ecological and physiological mechanisms that may differ between reforested and natural ecosystems. Consequently, further research is needed to better understand species acclimation and adaptation in restored areas.
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