Claim · model-written summary
The steepest decrease in stomatal conductance is attributed to the decline in leaf irradiance and in stomatal density.
- Taxon
- Acer campestre, Carpinus betulus and Quercus cerris
Carpinus betulus
Quercus cerris
Acer campestree0 - Outcome
- steepest decreasee1
- Qualifier
- caused by the decline in leaf irradiance and in stomatal densitye2
Verbatim
e0“crowns ofAcer campestre, Carpinus betulus andQuercus cerris”
e1“The steepest decrease was in the upper canopy”
e2“was caused by the decline in leaf irradiance and in stomatal density”
Title
Stomatal activity within the crowns of tall deciduous trees under forest conditions
P. Eliáš Biologia Plantarum 1979. doi:10.1007/bf02902208
Other claims from this paper (8)
- Observation Stomatal conductance was highest in sunlit sun leaves in the upper part of the canopy.
- Association Stomatal conductance decreased with increasing depth in the canopy.
- Observation The steepest decrease in stomatal conductance was in the upper canopy, in the intermediate zone between fully sunlit and fully shaded leaves.
- Association In codominant trees, conductance in shade leaves at the base of the crown was significantly lower than in sun leaves at the top of the crown.
- Observation In a dominant tree, Q. cerris, differences in stomatal conductance were small and mostly not significant.
- Association Variation in incident light determined the diurnal variation of stomatal conductance with respect to crown aspect.
- Observation Differences between sun leaves on the east and west facing aspects of the overstory crown of Q. cerris were demonstrated for several days.
- Association Variation in stomatal activity resulted from crown position in the forest stand and from leaf position within the canopy.