We compared the mean percentage of survivorship at the end of the period between Pinus canariensis protected and unprotected from grazing in the five plots and P. canariensis and P. pinea mean percentage of survivorship with a random pair t-test (p > 0.05, n=5, 1000 iterations; Edgington 1985). Non-normal errors made this test suitable.

Size |
Slope |
Altitude |
Cover class * |
Shrub |
Canopy | |||

m2 |
Sexagesimal ° |
m |
Rock |
Soil |
litter |
cover class * |
cover(%) | |

plot 1 |
1600 |
7 |
1205 |
4 |
3 |
9 |
6 |
41 |

plot 2 |
1500 |
21 |
1200 |
3 |
4 |
9 |
7 |
40 |

plot 3 |
1500 |
12 |
1250 |
5 |
3 |
9 |
8 |
60 |

plot 4 |
2000 |
25 |
1230 |
5 |
4 |
9 |
8 |
50 |

plot 5 |
2500 |
21 |
1140 |
5 |
6 |
8 |
7 |
42 |

(*) Cover of the different parameters estimate visually in the total plot with the following cover classes: cover classes: 1: traces, 2: <1% of cover in the plot, 3: 1-2%, 4: 2-5%, 5: 5-10%, 6: 10-25%, 7: 2550%, 8: 50-75%, 9: >75%, 10: 100%.

(*) Cover of the different parameters estimate visually in the total plot with the following cover classes: cover classes: 1: traces, 2: <1% of cover in the plot, 3: 1-2%, 4: 2-5%, 5: 5-10%, 6: 10-25%, 7: 2550%, 8: 50-75%, 9: >75%, 10: 100%.

The percentages of basal area and density of trees of each species (Pinus canariensis and P. pinea) were compared with the percentage of regeneration of the same species in each plot using the non-parametric Spearman Rank correlation coefficient and tested for significance (p< 0.05). Basic statistical methods followed Zar (1984) and were implemented using the SPSS statistical package (SPSS 1986).

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