TABLE 3.
Parameters of the Gompertz function and R 2 of the model for intra‐annual radial growth of Alnus alnobetula within the treeline ecotone during 2022–2024 (see Figure 4a,d; A = upper asymptote, doy = day of the year, FL = forestline, Ip = inflection point, TR‐N = treeline North, TR‐S = treeline South‐east, κ = rate of change parameter). Mean values ± standard deviation are given.
| Site | Year | A (μm) | I p (doy) | κ | R 2 |
|---|---|---|---|---|---|
| FL | 2022 | 1342 ± 7 | 181 ± 0.2 | 0.059 ± 0.001 | 0.996 |
| 2023 | 961 ± 3 | 194 ± 0.1 | 0.068 ± 0.001 | 0.998 | |
| 2024 | 1639 ± 6 | 196 ± 0.1 | 0.067 ± 0.001 | 0.999 | |
| TR‐S | 2022 | 1100 ± 10 | 193 ± 0.3 | 0.050 ± 0.001 | 0.994 |
| 2023 | 663 ± 3 | 190 ± 0.2 | 0.078 ± 0.001 | 0.997 | |
| 2024 | 841 ± 5 | 201 ± 0.2 | 0.055 ± 0.001 | 0.998 | |
| TR‐N | 2022 | 1453 ± 13 | 181 ± 0.4 | 0.070 ± 0.003 | 0.978 |
| 2023 | 435 ± 2 | 193 ± 0.2 | 0.105 ± 0.003 | 0.994 | |
| 2024 | 1239 ± 6 | 202 ± 0.2 | 0.064 ± 0.001 | 0.999 |