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Table II
Annual mortality rates for main tree species inventoried in the Oranienbaum Park and rates available from other studies. n in the 3rd column refers to the number of trees in each condition class. Rates are given for each condition class (5th column). The rate for condition class 3 is given in brackets to indicate that these trees were not included in the discriminant analyses. For each tree species, the difference between crown condition classes I and II was significant at, at least, p = 0.02.
| Species | total n | n | Overall mortality rate, | Mortality rate, | Wolf, 20041 | Ozolincius et al., | Monserud & | Tuhus, |
|---|---|---|---|---|---|---|---|---|
| (this study) | (this study) | % (this study) | % (this study) | 20052 | Sterba 19993 | 19954 | ||
| Alder | 763 | 401 / 317 / 45 | 1.6 | 1.2, 2.0, (4.9) | 0.5 | 0.4–0.8 | – | – |
| Ash | 787 | 391 / 366 / 30 | 1.7 | 1.5, 1.9, (7.1) | 0.9 | 0.1–1.0 | – | – |
| Birch | 593 | 366 / 193 / 34 | 2.7 | 2.3, 3.7, (9.3) | 1.2 | 0.2–0.4 | – | 0.1–0.35 |
| Linden | 4184 | 2669 / 1472 / 43 | 0.8 | 0.6, 1.2, (3.9) | 0.5 | – | – | – |
| Maple | 2252 | 1169 / 985 / 98 | 1.1 | 1.5, 2.1, (8.5) | – | – | – | – |
| Oak | 1534 | 804 / 701 / 29 | 1.0 | 0.9, 1.2, (3.9) | 0.2 | 0.1–0.4 | 0.6 (0.1–1.4) | – |
| Spruce | 1151 | 679 / 440 / 35 | 1.6 | 1.3, 2.0, (4.7) | – | 1.3–1.6 | 0.9 (0.4–1.4) | < 0.1–0.1 |