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6 results on '"Wolfe, Brett T."'

4. Leaves as bottlenecks: The contribution of tree leaves to hydraulic resistance within the soil−plant−atmosphere continuum

Author

Wolfe, Brett T., primary, Detto, Matteo, additional, Zhang, Yong‐Jiang, additional, Anderson‐Teixeira, Kristina J., additional, Brodribb, Tim, additional, Collins, Adam D., additional, Crawford, Chloe, additional, Dickman, L. Turin, additional, Ely, Kim S., additional, Francisco, Jessica, additional, Gurry, Preston D., additional, Hancock, Haigan, additional, King, Christopher T., additional, Majekobaje, Adelodun R., additional, Mallett, Christian J., additional, McDowell, Nate G., additional, Mendheim, Zachary, additional, Michaletz, Sean T., additional, Myers, Daniel B., additional, Price, Ty J., additional, Rogers, Alistair, additional, Sack, Lawren, additional, Serbin, Shawn P., additional, Siddiq, Zafar, additional, Willis, David, additional, Wu, Jin, additional, Zailaa, Joseph, additional, and Wright, S. Joseph, additional

Published
2023
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5. Leaf habit affects the distribution of drought sensitivity but not water transport efficiency in the tropics

Author

Vargas G., German, primary, Kunert, Norbert, additional, Hammond, William M., additional, Berry, Z. Carter, additional, Werden, Leland K., additional, Smith‐Martin, Chris M., additional, Wolfe, Brett T., additional, Toro, Laura, additional, Mondragón‐Botero, Ariadna, additional, Pinto‐Ledezma, Jesús N., additional, Schwartz, Naomi B., additional, Uriarte, María, additional, Sack, Lawren, additional, Anderson‐Teixeira, Kristina J., additional, and Powers, Jennifer S., additional

Published
2022
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6. Leaves as bottlenecks: The contribution of tree leaves to hydraulic resistance within the soil-plant-atmosphere continuum.

Author

Wolfe BT, Detto M, Zhang YJ, Anderson-Teixeira KJ, Brodribb T, Collins AD, Crawford C, Dickman LT, Ely KS, Francisco J, Gurry PD, Hancock H, King CT, Majekobaje AR, Mallett CJ, McDowell NG, Mendheim Z, Michaletz ST, Myers DB, Price TJ, Rogers A, Sack L, Serbin SP, Siddiq Z, Willis D, Wu J, Zailaa J, and Wright SJ

Subjects
Water physiology, Plant Transpiration physiology, Plant Leaves physiology, Trees physiology, Soil
Abstract

Within vascular plants, the partitioning of hydraulic resistance along the soil-to-leaf continuum affects transpiration and its response to environmental conditions. In trees, the fractional contribution of leaf hydraulic resistance (R leaf ) to total soil-to-leaf hydraulic resistance (R total ), or fR leaf (=R leaf /R total ), is thought to be large, but this has not been tested comprehensively. We compiled a multibiome data set of fR leaf using new and previously published measurements of pressure differences within trees in situ. Across 80 samples, fR leaf averaged 0.51 (95% confidence interval [CI] = 0.46-0.57) and it declined with tree height. We also used the allometric relationship between field-based measurements of soil-to-leaf hydraulic conductance and laboratory-based measurements of leaf hydraulic conductance to compute the average fR leaf for 19 tree samples, which was 0.40 (95% CI = 0.29-0.56). The in situ technique produces a more accurate descriptor of fR leaf because it accounts for dynamic leaf hydraulic conductance. Both approaches demonstrate the outsized role of leaves in controlling tree hydrodynamics. A larger fR leaf may help stems from loss of hydraulic conductance. Thus, the decline in fR leaf with tree height would contribute to greater drought vulnerability in taller trees and potentially to their observed disproportionate drought mortality., (© 2022 John Wiley & Sons Ltd.)

Published
2023
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