Xylem conductivity and vulnerability to cavitation of ponderosa pine growing in contrasting climates.

@article{Maherali2000XylemCA,
  title={Xylem conductivity and vulnerability to cavitation of ponderosa pine growing in contrasting climates.},
  author={Hafiz Maherali and Evan H. Delucia},
  journal={Tree physiology},
  year={2000},
  volume={20 13},
  pages={859-67}
}
We examined the effects of increased transpiration demand on xylem hydraulic conductivity and vulnerability to cavitation of mature ponderosa pine (Pinus ponderosa Laws.) by comparing trees growing in contrasting climates. Previous studies determined that trees growing in warm and dry sites (desert) had half the leaf/sapwood area ratio (A(L)/A(S)) and more than twice the transpiration rate of trees growing in cool and moist sites (montane). We predicted that high transpiration rates would be… CONTINUE READING