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. 2013 Mar 5;3(4):961–970. doi: 10.1002/ece3.518

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.