Table 2.
Stand characteristics among three seral stages undergoing different stages of secondary succession on the northern Yucatan Peninsula
| Seral stage | VPD (kPa)a | Tree height (m)b | DBH (cm) | Soil water content (%) | Soil water δ18O (‰) | Bulk leaf water potential (MPa) | Xylem water δ180 (‰) | Foliar δ13C (‰) | ∆18Ol (‰) |
|---|---|---|---|---|---|---|---|---|---|
| Early | 0.60 ± 0.02 | 3.35 ± 0.22 A | 3.92 ± 0.71 A | 12.71 ± 0.41 A | 4.97 ± 0.45 A | −1.01 ± 0.14 A | −1.18 ± 0.53 A | −27.71 ± 0.25 A | 26.51 ± 0.40 A |
| Mid | 0.43 ± 0.01 | 6.66 ± 0.30 B | 6.30 ± 0.73 B | 16.00 ± 1.14 A | 4.55 ± 0.40 A | −0.84 ± 0.14 A,B | −2.67 ± 0.22 B | −28.54 ± 0.22 B | 26.10 ± 0.36 A,B |
| Late | 0.46 ± 0.01 | 9.25 ± 0.47 C | 11.97 ± 2.56 C | 22.90 ± 1.56 B | 2.87 ± 0.44 B | −0.54 ± 0.07 B | −1.83 ± 0.42 A,B | −28.85 ± 0.20 B | 25.08 ± 0.50 B |
Different letters within a column indicate significant differences among seral stages (P < 0.05)
aMeans and standard error of vapour pressure deficit (VPD) are from data collected by Goode and Allen (2009)
bTree height was calculated from DBH measurements using algometric equations described in Vargas et al. (2008)