Table 1.
Characterization of the six plots studied (mean ± SE, n = 3 plots).
| Treatment plots | Control plots | ||
|---|---|---|---|
| Arbutus unedo L. | Density 2013 (stems ha−1) | 1022 ± 235 | 1822 ± 289 |
| Basal area 2013 (m2 ha−1) | 4.418 ± 1.598 | 9.849 ± 2.520 | |
| BAI 1999–2012 (m2 ha −1 year−1) | 0.014 ± 0.042 | 0.152 ± 0.027 | |
| Annual stem mortality rate (1999–2012) | 0.010 ± 0.008 | 0.006 ± 0.005 | |
| Phillyrea latifolia L. | Density 2013 (stems ha−1) | 6600 ± 3936 | 5711 ± 3004 |
| Basal area 2013 (m2 ha−1) | 7.950 ± 5.067 | 6.107 ± 3.650 | |
| BAI 1999–2012 (m2 ha −1 year−1) | 0.057 ± 0.053 | 0.052 ± 0.028 | |
| Annual stem mortality rate (1999–2012) | 0.008 ± 0.005 | 0.006 ± 0.001 | |
| Quercus ilex L. | Density 2013 (stems ha−1) | 4333 ± 1674 | 5644 ± 1325 |
| Basal area 2013 (m2 ha−1) | 27.660 ± 12.497 | 34.192 ± 7.799 | |
| BAI 1999–2012 (m2 ha−1 year−1) | 0.001 ± 0.130 | 0.147 ± 0.135 | |
| Annual stem mortality rate (1999–2012) | 0.037 ± 0.017 | 0.021 ± 0.002 | |
| All species | Total basal area 1999 (m2 ha−1) | 39.02 ± 8.08 | 45.24 ± 1.53 |
| Total basal area 2013 (m2 ha−1) | 40.03 ± 8.83 | 50.15 ± 2.06 |
Mean annual stem mortality rate was calculated as m = 1 − [1 − (No − Nt) / No]1/t as described in Sheil et al. (1995), where No and Nt are the live stem counts at the beginning and the end of the corresponding time period (t = 14 years). Abbreviations: BAI, basal area increment.