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Xylem Water Flow in Tropical Vines as Measured by a Steady State Heating Method by K. Fichtner; E. -D. Schulze is a Environmental Science article available to read on EtoBox.
What is Xylem Water Flow in Tropical Vines as Measured by a Steady State Heating Method about?
A method for determining the mass flow rate of xylem water in thin stems under natural field conditions is presented. Diurnal courses of xylem water flow and stomatal conductance of the vines Entadopsis polystachya, Cyclanthera multifoliolata, and Serjania brachycarpa were examined in a tropical deciduous forest on the west coast of Mexico. E. polystachya (leaf area 23.6 m) had a maximum water flow rate of 6.50 kg h or 1.44 kg cm h; daily water use was 2.00 kg m day. S. brachycarpa (leaf area 4.5 m) and C. multifoliolata (leaf area 3.6 m) had a maximum water flow rate of 0.72 and 0.19 kg h or 0.63 and 0.92 kg cm h. Daily water use was 1.26 and 0.39 kg m day, respectively. The daily courses of xylem water flow were strongly influenced by the orientation of the leaf area to irradiance and its intensity. While leaves of E. polystachya had a constant high stomatal conductance during the day, S. brachycarpa had a maximum stomatal opening in the morning followed by continuous closure during the rest of the day. In contrast to the woody species, the herbaceous C. multifoliolata exhibited a strong midday depression of stomatal conductance and wilting of its leaves. The leaf biomass account
Who reads Xylem Water Flow in Tropical Vines as Measured by a Steady State Heating Method?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- K. Fichtner; E. -D. Schulze
- Publisher
- Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC (ISSN 0029-8549)
- Published
- 1990
- Language
- EN
- Field
- Environmental Science (Physical Sciences)