NDLI: Leaf phenology is associated with soil water availability and xylem traits in a tropical dry forest

Content Provider	Springer Nature Link
Author	Méndez Alonzo, Rodrigo Pineda García, Fernando Paz, Horacio Rosell, Julieta A. Olson, Mark E.
Copyright Year	2012
Abstract	In tropical dry forests, spatial heterogeneity in soil water availability is thought to determine interspecific differences in key components of resource use strategies, such as leaf phenology and xylem function. To understand the environmental drivers of variation in leaf phenology and xylem function, we explored the relation of soil water potential to topographic metrics derived from a digital elevation model. Subsequently, we compared nine xylem hydraulic, mechanical and storage traits in 18 species in three phenological classes (readily deciduous, tardily deciduous, and evergreen) in the dry tropical forest of Chamela, Mexico. Soil water potential was negatively correlated with elevation, insolation and water flow accumulation. Evergreen species characterized low-elevation moist sites, whereas deciduous species dominated hills and dry sites. Overall, evergreen species had lower xylem specific conductivity than deciduous species, and tardily deciduous species were different from readily deciduous and evergreen species in five of eight xylem traits. In dry tropical forests, water availability promotes divergence in leaf phenology and xylem traits, ranging from low wood density, evergreen species in moist sites to a combination of low wood density, readily deciduous species plus high wood density, tardily deciduous species in dry sites.
Starting Page	745
Ending Page	754
Page Count	10
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	27
Issue Number	3
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-12-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biomechanics Leaf deciduousness Soil water potential Topography Wood density Xylem hydraulic conductivity Forestry Plant Sciences Agriculture Plant Anatomy/Development Plant Pathology Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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