Traits

We will measure the following functional traits.

• LA: leaf area \(cm^{2}\)
• LDMC: leaf dry matter content \(g.g^{-1}\)
• LT: leaf thickness (\(\mu m\))
• CC: chlorophyll content (\(\mu g.cm^{-2}\))
• SLA: specific leaf area (\(g.cm^{-2}\))
• RWC: relative water content (\(\%\)) is of special interest as it reflects the amount of water present the leaf relative to the maximum it can hold (Barrs and Weatherley 1962)
• TLP: leaf water potential at which leaf cells lose turgor (\(MPa\)), a key drought tolerance trait.
• MajVLA: Nervation density determining the capacity of water supply in leaves (Schneider et al. 2017).
• Nmass: leaf nitrogen mass content (\(mg.g^{-1}\), maybe simply collected but measured later)
• Pmass: leaf phosphorus mass content (\(mg.g^{-1}\), maybe simply collected but measured later)
• WD: wood density (\(g.cm^{-3}\), to be discussed with Romain Lehnebach)

They will necessitate the following raw measurements:

• Leaf fresh thickness (LT)
• Leaf SPAD measurement (CC)
• Leaf fresh weight (LDMC, SLA, RWC)
• Leaf scan (LA, MajVLA)
• Leaf saturated weight (RWC)
• Leaf saturated water potential (TLP)
• ? (WD)

Barrs, HD, and PE Weatherley. 1962. “A Re-Examination of the Relative Turgidity Technique for Estimating Water Deficits in Leaves.” Australian Journal of Biological Sciences 15 (3): 413–28.

Schneider, Julio V, Jörg Habersetzer, Renate Rabenstein, Jens Wesenberg, Karsten Wesche, and Georg Zizka. 2017. “Water Supply and Demand Remain Coordinated During Breakdown of the Global Scaling Relationship Between Leaf Size and Major Vein Density.” New Phytologist 214 (1): 473–86.