Table 6. Pollen and seed dispersal distances.
Pollen dispersal | Seed dispersal | |||||
Site | Min (m) | Max (m) | b | δ (m) | b | δ (m) |
France | 0.0 | 216 | 0.23 (0.07–0.39) | 15.6 (7.5–22.4) | 7.90 (0.18–39.68) | 4.1 (0.7–6.5) |
Italy | 0.0 | 836 | 0.14 (2.52e–06–0.28) | 5371.1 (1923.4–9708.2) | 0.075 (4.4e–16–0.4) | 119.2 (15.1–518.1) |
The Netherlands 98 | 0.0 | 264 | 0.14 (0.02–0.27) | 671.1 (45.6–5306) | - | - |
The Netherlands 02 | 19.2 | 233 | 0.08 (0.007–0.29) | 1101.6 (54.2–7018.6) | - | - |
Spain | 0.0 | 9977 | 0.31 (2.56e-20-0.47) | 5149.4 (1028.5-9612.0) | -failed- | 0.6 (0.5–0.8) |
Great Britain | 0.0 | 644 | 0.01 (3.72e-44-0.09) | 1185 (186.7–4722.9) | 7.82 (5.6e-15-18.8) | 98.6 (88.6–102.2) |
Denmark | 0.0 | 224 | 0.23 (2.21e-14-0.53) | 166.3 (61.5–603.7) | 11.37 (9.5e-07-26.9) | 62.4 (20.1–76.0) |
Sweden | 0.0 | 841 | 0.04 (0.008–0.12) | 497.1 (227.2–1969.5) | 1.05 (0.3–2.4) | 143.1 (66.1–376.1) |
Switzerland | 0.0 | 346 | 0.02 (0.01–0.03) | 3674.4 (161.5–9242.7) | - | - |
Fit of the observed data to a one-dimensional exponential power distribution with parameters δ and b.
Minimum (min) and maximum (max) pollen dispersal distances observed (in meters). δ: mean dispersal distance travelled by the pollen/seed (in meters), b: shape parameter. Mean parameter values and confidence intervals at 95% (numbers within brackets) were obtained after 1000 bootstrap resampling (see Fig. 6: pollen dispersal distributions (observations and confidence intervals) and Fig. 7: seed dispersal distributions (observations and confidence bands)).