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Leaf habit affects the distribution of drought sensitivity but not water transport efficiency in the tropics Vargas G., German; Norbert, Kunert; Hammond, William M.; Berry, Z. Carter; Werden, Leland K.; Smith-Martin, Chris M.; Wolfe, Brett T.; Toro, Laura; Mondragón-Botero, Ariadna; Pinto-Ledezma, Jesús N.; Schwartz, Naomi B.; Uriarte, María; Sack, Lawren; Anderson-Texeira, Kristina J.; Powers, Jennifer S.
Description
<b>Abstract</b><br/>
Considering the global intensification of aridity in tropical biomes due to climate change, we need to understand what shapes the distribution of drought sensitivity in tropical plants. We conducted a pantropical data synthesis representing 1117 species to test whether xylem-specific hydraulic conductivity (K<sub>S</sub>), water potential at leaf turgor loss (Ψ<sub>TLP</sub>), and water potential at 50% loss of K<sub>S</sub> (ΨP50) varied along climate gradients. The Ψ<sub>TLP</sub> and ΨP<sub>50</sub> increased with climatic moisture only for evergreen species, but K<sub>S</sub> did not. Species with high Ψ<sub>TLP</sub> and Ψ<sub>P50</sub> values were associated with both dry and wet environments. However, drought-deciduous species showed high Ψ<sub>TLP</sub> and ΨP<sub>50</sub> values regardless of water availability whereas evergreen species only in wet environments. All three traits showed a weak phylogenetic signal and a short half-life. These results suggest that environmental controls on trait variance, which in turn is modulated by leaf habit along climatic moisture gradients in the tropics.</p>
Item Metadata
| Title |
Leaf habit affects the distribution of drought sensitivity but not water transport efficiency in the tropics
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| Creator |
Vargas G., German; Norbert, Kunert; Hammond, William M.; Berry, Z. Carter; Werden, Leland K.; Smith-Martin, Chris M.; Wolfe, Brett T.; Toro, Laura; Mondragón-Botero, Ariadna; Pinto-Ledezma, Jesús N.; Schwartz, Naomi B.; Uriarte, María; Sack, Lawren; Anderson-Texeira, Kristina J.; Powers, Jennifer S.
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| Date Issued |
2023-11-23
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| Description |
<b>Abstract</b><br/>
Considering the global intensification of aridity in tropical biomes due to climate change, we need to understand what shapes the distribution of drought sensitivity in tropical plants. We conducted a pantropical data synthesis representing 1117 species to test whether xylem-specific hydraulic conductivity (K<sub>S</sub>), water potential at leaf turgor loss (Ψ<sub>TLP</sub>), and water potential at 50% loss of K<sub>S</sub> (ΨP50) varied along climate gradients. The Ψ<sub>TLP</sub> and ΨP<sub>50</sub> increased with climatic moisture only for evergreen species, but K<sub>S</sub> did not. Species with high Ψ<sub>TLP</sub> and Ψ<sub>P50</sub> values were associated with both dry and wet environments. However, drought-deciduous species showed high Ψ<sub>TLP</sub> and ΨP<sub>50</sub> values regardless of water availability whereas evergreen species only in wet environments. All three traits showed a weak phylogenetic signal and a short half-life. These results suggest that environmental controls on trait variance, which in turn is modulated by leaf habit along climatic moisture gradients in the tropics.</p> |
| Subject | |
| Type | |
| Notes |
Dryad version number: 4</p> Version status: submitted</p> Dryad curation status: Published</p> Sharing link: https://datadryad.org/stash/share/SFnL-SZllcSp1oEkxzhNKG7jaZcR4eO9XBS80YhSEXI</p> Storage size: 2406512</p> Visibility: public</p> |
| Date Available |
2023-11-20
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| Provider |
University of British Columbia Library
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| License |
CC0 1.0
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| DOI |
10.14288/1.0437888
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| URI | |
| Publisher DOI | |
| Grant Funding Agency |
University of Minnesota; Interdisciplinary Center for the Study of Global Change, University of Minnesota*; National Science Foundation; United States Department of Energy
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| Aggregated Source Repository |
Dataverse
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CC0 1.0