Table 1. Data summary statistics.
Summary statistics calculated from the data collected at two sites under two light conditions. Each cell shows: mean ± standard deviation (95% confidence interval about the mean).
| Treatment | λG, tip growth rate (nodes yr−1) | λD, basal death rate (nodes yr−1) | A, mean age at branching (yr) | P, Pr (node branching) | λT, net rate of increase in number of nodes (nodes yr−1) | B, rate of increase in number of stems (stems yr−1) |
|---|---|---|---|---|---|---|
| Conway high light | 6.5 ± 5.6 | 2.1 ± 2.8 | 0.38 ± 0.13 | 0.042 | 5.3 ± 6.3 | 0.26 ± 0.58 |
| (N = 46) | (5.0, 8.1) | (1.4, 3.0) | (0.30, 0.45) | (0.022, 0.071) | (3.4, 7.1) | (0.11, 0.46) |
| Conway low light | 6.0 ± 4.5 | 5.9 ± 6.5 | 0.36 ± 0.13 | 0.030 | 0.12 ± 8.2 | 0.17 ± 0.38 |
| (N = 46) | (4.8, 7.3) | (4.1, 7.8) | (0.28, 0.46) | (0.012, 0.060) | (−2.2, 2.5) | (0.065, 0.28) |
| Hamilton high light | 9.3 ± 8.2 | 2.9 ± 5.6 | 0.14 ± 0.23 | 0.023 | 9.8 ± 9.6 | 0.27 ± 0.48 |
| (N = 70) | (7.5, 11.3) | (1.7, 4.3) | (0.06, 0.25) | (0.014, 0.036) | (7.6, 12.0) | (0.17, 0.39) |
| Hamilton low light | 9.8 ± 5.1 | 2.1 ± 5.0 | 0.38 ± 0.18 | 0.004 | 9.0 ± 8.4 | 0.03 ± 0.17 |
| (N = 70) | (8.6, 11.1) | (0.99, 3.2) | (0.25, 0.5) | (0.001, 0.014) | (7.0, 11.0) | (0.00, 0.071) |