Tropical rainforest species have larger increases in temperature optima with warming than warm-temperate rainforest trees.

ABSTRACT: While trees can acclimate to warming, there is concern that tropical rainforest species may be less able to acclimate because they have adapted to a relatively stable thermal environment. Here we tested whether the physiological adjustments to warming differed among Australian tropical, subtropical and warm-temperate rainforest trees. Photosynthesis and respiration temperature responses were quantified in six Australian rainforest seedlings of tropical, subtropical and warm-temperate climates grown across four growth temperatures in a glasshouse. Temperature-response models were fitted to identify mechanisms underpinning the response to warming. Tropical and subtropical species had higher temperature optima for photosynthesis (T_optA ) than temperate species. There was acclimatio

SUBMITTER: Choury Z 

PROVIDER: S-EPMC9311211 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature