Claim · model-written summary
Dry-season net photosynthesis fell equally in early- and late-successional species at the two warmer sites.
- Taxon
- Tropical Treest0
- Outcome
- Ane0
- Direction
- reducede0
- Qualifier
- during the dry seasone0
- Setting
- the two warmer sitese0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorValue
Verbatim
e0“An was strongly and equally reduced in ES and LS species during the dry season at the two warmer sites, but not at the high-elevation site”
t0“Tropical Trees”
Title
Climate Change sensitivity of Photosynthesis and Respiration in Tropical Trees
Myriam Mujawamariya Gothenburg University Publications Electronic Archive (Gothenburg University) 2021
Other claims from this paper (14)
- Association Mature-tree stomatal conductance, transpiration and light saturated net photosynthesis decreased at warmer lower-elevation sites in the dry season.
- Observation In the wet season, mature-tree stomatal conductance and net photosynthesis lacked the dry-season pattern.
- Observation In the wet season, mature-tree transpiration showed the opposite elevation pattern.
- Association Without drought, net photosynthesis decreased at the warmest low-elevation site in late-successional species.
- Observation Without drought, early-successional species did not show the decrease in net photosynthesis at the warmest site.
- Observation Dry-season net photosynthesis was not reduced at the high-elevation site.
- Association Leaf dark respiration measured at 20 ℃ was strongly reduced in trees grown at warmer sites.
- Observation Dark respiration at prevailing nighttime temperatures stayed constant or declined in warmer-grown trees.
- Association Drought reduced leaf dark respiration.
- Intervention effect Warm-grown trees showed no significant rise in optimum temperature of net photosynthesis or its biochemical processes.
- Observation The authors infer reduced tropical-tree water use and CO2 uptake if dry seasons become more pronounced in warmer climate.
- Recommendation The authors recommend accounting for thermal acclimation of leaf dark respiration to avoid overestimating warming effects.
- Observation Contrasting warming responses of photosynthesis in early- and late-successional trees may shift tropical forest community composition.
- Association The thermal optimum of photosynthesis may acclimate less in tropical montane tree species than in temperate and boreal species.