Abstract
The association between stem hydraulic traits and leaf functional traits in mangroves is unclear. We investigated the functional coordination between stem and leaf hydraulic traits and their integration with leaf economic spectrum (LES) in mangroves from the Sarangani Bay Protected Seascape in southern Philippines. We examined stem and leaf hydraulic traits and LES traits in 14 and 18 mangrove species, respectively, and compared them with the data on mangroves from southern China and the global plant dataset. The stem and leaf hydraulic traits were independent of each other, and they were generally decoupled from LES traits of the Philippine mangroves, which was largely attributable to leaf succulence. Mangroves from both countries had higher foliar P and K at a given leaf mass per area than the global plants. The stomatal (SD) and vein (VD) densities were not significantly correlated in the Philippine mangroves, in contrast to the strong SD–VD correlation in the Chinese mangroves and global vascular plants. This study illustrated the decoupling between hydraulic and economic leaf traits and their independence from stem hydraulic traits in mangroves in southern Philippines.
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Acknowledgements
The authors are grateful to all local government units and key offices of Sarangani province in the Republic of the Philippines, various levels of management and bureaus of the Department of Environment and Natural Resources, and other institutions and individuals that facilitated the successful completion of the study. The authors also gratefully acknowledge the two anonymous reviewers for their insightful comments to help improve the manuscript.
Funding
This study was supported through grants from the National Natural Science Foundation of China (31670406) and Bagui Scholars Program of Guangxi Zhuang Autonomous Region of China (C33600992001) to KFC, and a fellowship from the China Scholarship Council (2016GXZS81) to ARA.
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ARA and KFC conceived and designed the study. Data collection was performed by ARA, XJ, DML, and XYC. Data analysis was performed by ARA and KFC. The first draft of the manuscript was written by ARA, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Agduma, A.R., Jiang, X., Liang, DM. et al. Stem Hydraulic Traits are Decoupled from Leaf Ecophysiological Traits in Mangroves in Southern Philippines. J. Plant Biol. 65, 389–401 (2022). https://doi.org/10.1007/s12374-022-09361-6
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DOI: https://doi.org/10.1007/s12374-022-09361-6