Rooting depth and xylem vulnerability are independent woody plant traits jointly selected by aridity, seasonality, and water table depth
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
We synthesized global trait and vegetation plot datasets to examine how rooting depth and xylem vulnerability across 188 woody plant species interact with aridity, precipitation seasonality, and water table depth to influence species occurrence probabilities across all biomes.
Xylem resistance to embolism and rooting depth are independent woody plant traits that do not exhibit an interspecific trade-off. Resistant xylem and deep roots increase occurrence probabilities in arid, seasonal climates over deep water tables. Resistant xylem and shallow roots increase occurrence probabilities in arid, nonseasonal climates over deep water tables. Vulnerable xylem and deep roots increase occurrence probabilities in arid, nonseasonal climates over shallow water tables. Lastly, vulnerable xylem and shallow roots increase occurrence probabilities in humid climates.
Each combination of trait values optimizes occurrence probabilities in unique environmental conditions. Responses of deeply rooted vegetation may be buffered if evaporative demand changes faster than water table depth under climate change.
Originalsprog | Engelsk |
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Tidsskrift | New Phytologist |
Vol/bind | 240 |
Udgave nummer | 5 |
Antal sider | 14 |
ISSN | 0028-646X |
DOI | |
Status | Udgivet - 2023 |
Bibliografisk note
Funding Information:
This study was funded by a US National Science Foundation grant 2019528 to DL. We thank the German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig for supporting the sPlot working group and the University of Wyoming Advanced Research Computing Center for their technical support. sPlot was initiated by sDiv and funded by the German Research Foundation (FZT 118, 202548816) and is now a strategic project of iDiv. FMS acknowledges the support of the Italian Ministry of University and Research, under the Maria Levi Montalcini program (2019). CB was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (2022R1A2C1003504). We thank Ying Fan and two anonymous reviewers for their constructive feedback.
Publisher Copyright:
© 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.
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