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Table I
Functional traits measured for a regional species pool of functional diversity. All foliar traits have been standardized to a leaf mass basis, and were measured on juveniles of two years age under controlled conditions in shadehouses.
| Attribute (Abbreviation) | Unit | Measurement |
|---|---|---|
| Foliar [C]:[N] (Cm-Nm) | g g−1 | CHN autoanalyzer |
| Foliar [N] (Nm) | μg g−1 | CHN autoanalyzer |
| Foliar delta 15N | μg μg−1 | Mass spec. analysis |
| (Roggy et al., 1999) | ||
| Assimilation Rate | μmol CO2g−1 s−1 | CIRAS-1 System at |
| (Am) | 360 ppm CO2 and | |
| 700 μmol m−2 s−1 PAR | ||
| Stomatal conductance | mmol H2O g−1 s−1 | CIRAS-1 System at |
| (Gm) | 360 ppm CO2 and | |
| 700 μmol m−2 s−1 PAR | ||
| Relative Growth | mg g−1d−1 | For a harvest period |
| Rate (RGR) | from 24–30 months age | |
| Root nodules (Nodules) | Presence-absence | On roots at final harvest |
| Root-Shoot Ratio (R-S) | g g−1 | root biomass/shoot |
| biomass at final harvest | ||
| Specific Leaf Area (SLA) | cm2g−1 | leaf area/leaf biomass |
| for new leaves at final | ||
| harvest |