The hydraulic efficiency-safety trade-off differs between lianas and trees

Ecology
Masha T van der SandeLars Markesteijn

Abstract

Hydraulic traits are important for woody plant functioning and distribution. Associations among hydraulic traits, other leaf and stem traits, and species' performance are relatively well understood for trees, but remain poorly studied for lianas. We evaluated the coordination among hydraulic efficiency (i.e., maximum hydraulic conductivity), hydraulic safety (i.e., cavitation resistance), a suite of eight morphological and physiological traits, and species' abundances for saplings of 24 liana species and 27 tree species in wet tropical forests in Panama. Trees showed a strong trade-off between hydraulic efficiency and hydraulic safety, whereas efficiency and safety were decoupled in lianas. Hydraulic efficiency was strongly and similarly correlated with acquisitive traits for lianas and trees (e.g., positively with gas exchange rates and negatively with wood density). Hydraulic safety, however, showed no correlations with other traits in lianas, but with several in trees (e.g., positively with leaf dry matter content and wood density and negatively with gas exchange rates), indicating that in lianas hydraulic efficiency is an anchor trait because it is correlated with many other traits, while in trees both efficiency and safety...Continue Reading

References

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Citations

Jul 14, 2019·Journal of Experimental Botany·Lenka PlavcováThomas Speck
Apr 5, 2019·Ecology·Stefan A Schnitzer, Geertje M F van der Heijden
Jan 5, 2022·The New Phytologist·Jehová LourençoCamilla Rozindo Dias Milanez

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Methods Mentioned

BETA
SMA

Software Mentioned

phytools
R
MASS
Hmisc
pchisq
smatr
quantreg
vegan

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