If heat waves occur in generally hot, dry weather, then trees will provide shade—but some may struggle with transpiration if the soil is too dry. This can reduce the cooling effect of trees.

On the representativeness of plots for scaling canopy transpiration in a Populus tremuloides forest stand. Journal of Geophysical Research-Biogeosciences. 115:602016. Traver, E, BE Ewers, DS Mackay ...

Simulating nectarine tree transpiration and dynamic water storage from responses of leaf conductance to light and sap flow to stem water potential and vapor pressure deficit. A portable NMR sensor ...

T. & Ewers, F. The hydraulic architecture of trees and other woody plants. New Phytologist 119, 345-360 (1991). Wheeler, T. D. & Stroock, A. D. The transpiration of water at negative pressures in ...

In a mature flowering plant or tree, most of the cells that make up the xylem are specialised cells called vessels. As water travels through the xylem in the stem and leaf, it is being replaced by ...

Xylem Transpiration Moves water and minerals from roots to leaves Columns of hollow, dead reinforced cells Phloem Translocation Moves food substances from leaves to rest of plant and from stores ...