Table 1 For each species, the number (n) of observations; mean DBH (cm) followed by the standard deviation in parentheses; percentage of trees that failed, had leaves, and had a defect; probability of failure [p(f)] of a tree of mean DBH, followed by the standard error in parentheses; and whether p(f) was significantly different from a 50% chance of failure
From: Factors affecting branch failures in open-grown trees during a snowstorm in Massachusetts, USA
Species | n | DBH | Fail | Leaf | Defect | p(f)z | p |
|---|---|---|---|---|---|---|---|
Red maple | 185 | 27 (15) | 31% | 51% | 51% | 0.27 (0.41) | 0.012 |
Green ash | 79 | 27 (10) | 24% | 6% | 42% | 0.11 (0.73) | 0.005 |
Honeylocust | 102 | 34 (14) | 35% | 7% | 24% | 0.35 (0.26) | 0.013 |
Red pine | 62 | 33 (9) | 5% | 100% | 23% | 0.00 (2.85) | 0.015 |
White pine | 156 | 38 (16) | 28% | 100% | 33% | 0.01 (0.87) | <0.001 |
London planetree | 50 | 40 (17) | 76% | 96% | 14% | 0.78 (0.38) | 0.001 |
Pin oak | 102 | 43 (21) | 54% | 96% | 30% | 0.70 (0.32) | 0.007 |
Red oak | 63 | 53 (25) | 72% | 83% | 22% | 0.84 (0.39) | <0.001 |
Littleleaf linden | 55 | 44 (13) | 69% | 60% | 22% | 0.59 (0.53) | 0.497 |
Liberty elm | 54 | 26 (8) | 28% | 30% | 63% | 0.62 (0.75) | 0.511 |