Table 1.
Mean (± SE) values for various characteristics of black pine sampled haphazardly at two sites, Samarina and Aetia (n = 78 and 97 trees, respectively)
| Trait | Samarina | Aetia | t/χ2 | P |
|---|---|---|---|---|
| Mean ± SE | Mean ± SE | |||
| DBH (cm) | 75.90 ± 1.49 | 96.98 ± 1.57 | −9.79 | <0.0001 |
| Number of cones | 312.5 ± 24.2 | 313.8 ± 22.4 | 1.70 | 0.09 |
| Cone length (mm) | 61.84 ± 0.79 | 61.23 ± 0.67 | 0.57 | 0.57 |
| Cone width (mm) | 31.47 ± 0.37 | 31.40 ± 0.28 | 0.06 | 0.95 |
| Cone width/length | 0.511 ± 0.004 | 0.516 ± 0.005 | −0.72 | 0.47 |
| Cone mass (gm) | 14.73 ± 0.48 | 15.81 ± 0.37 | −2.28 | 0.02 |
| Scale thickness (mm) | 3.51 ± 0.04 | 3.64 ± 0.04 | −2.27 | 0.02 |
| Scale length (mm) | 17.29 ± 0.27 | 17.71 ± 0.22 | −1.27 | 0.21 |
| Number of full seeds | 31.47 ± 1.47 | 30.82 ± 1.04 | 0.002 | 0.96 |
| Number of empty seeds | 16.18 ± 0.98 | 14.87 ± 0.70 | 0.75 | 0.46 |
| Individual seed mass (mg) | 21.7 ± 4.0 | 23.5 ± 3.5 | −3.02 | 0.02 |
| Seed mass/cone mass | 0.0255 ± 0.0088 | 0.0263 ± 0.0083 | 0.34 | 0.56 |
| Percent of seeds predated | 11.2 (median = 3.2) | 0.9 (median = 0) | 67.03 | <0.0001 |
T-tests were used to test whether the means differed (on ln-transformed data) and the t statistics and P-values are given, except for the number of full seeds, seed mass/cone mass, and percent seed predation where Kruskal–Wallis tests were used and χ2 statistic is presented. Significant P-values (<0.05) are in bold.