Article Figures & Data
Figures
- Figure 1.
Decay incidence in Albany, Buffalo, Rochester and Syracuse (positive incidence if ratio of sound wood distance to radius was less than 1.00 at either DBH or indicator test sites drilled with a Resistograph F400). χ2 analysis showed no difference amongst the cities (p = 0.05 χ2 test statistic = 2.9 for 3 degrees of freedom with a critical value of 7.8).
- Figure 2.
Decay incidence by species (positive incidence if ratio of sound wood distance to radius was less than 1.00 at either DBH or indicator test sites drilled with a Resistograph F400). χ2 analysis showed a significant difference amongst the species (p = 0.05 χ2 test statistic = 15.6 for 3 degrees of freedom with a critical value of 7.8).
- Figure 3.
Decay incidence by DBH classes (positive incidence if ratio of sound wood distance to radius was less than 1.00 at either DBH or indicator test sites drilled with a Resistograph F400). χ2 analysis showed a significant difference amongst the diameter classes (p = 0.05 χ2 test statistic = 10.2 for 3 degrees of freedom with a critical value of 7.8).
- Figure 4.
Distribution of decay severity based on the ratio of sound wood distance to radius for all the trees sampled in the four cities combined.
- Figure 5.
Incidence of severe decay in Albany, Buffalo, Rochester and Syracuse (positive incidence if ratio of sound wood distance to radius was less than or equal to 0.30 at either DBH or indicator). χ2 analysis showed no significant difference amongst the cities (p = 0.05 χ2 test statistic = 7.5 for 3 degrees of freedom with a critical value of 7.8).
- Figure 6.
Incidence of severe decay by species (positive incidence if ratio of sound wood distance to radius was less than or equal to 0.30 at either DBH or indicator). χ2 analysis showed a significant difference amongst the tree species (p = 0.05 χ2 test statistic = 9.7 for 3 degrees of freedom with a critical value of 7.8).
- Figure 7.
Severe decay incidence by DBH class (positive incidence if ratio of sound wood distance to radius was less than or equal to 0.30 at either DBH or indicator). χ2 analysis showed a significant difference amongst the diameter classes (p = 0.05 χ2 test statistic = 33.3 for 3 degrees of freedom with a critical value of 7.8).
Tables
Total Albany Buffalo Rochester Syracuse Total 1848 434 464 476 474 Norway Maple 474 119 115 120 120 Silver Maple 472 113 119 119 121 Sugar Maple 433 86 112 120 115 Other Species 469 116 118 117 118 30.5-45.7cm DBH 363 90 85 99 89 45.7-61cm DBH 509 134 121 138 116 61-76.2cm DBH 557 131 128 154 144 76.2cm DBH 419 79 130 85 125 Total Norway Maple Silver Maple Sugar Maple Other Species Total 1848 474 472 433 469 30.5-45.7cm DBH 363 100 82 88 93 45.7-61cm DBH 509 137 106 124 142 61-76.2cm DBH 557 155 138 137 127 76.2cm DBH 419 82 146 84 107
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