Appendix E. Summary of observed regression slopes of seedling survival on adult tree abundance or seedling density: habitat test.
TABLE E1. Summary of observed regression slopes of seedling survival on adult tree abundance (methods A and B) or seedling density (C), as tested against the distribution of slopes of 1000 simulated regressions randomizing either the predictor (B) or response variable (A and C). A separate test was conducted for 10 seedling plots in each of three habitats. (*P < 0.05, **P < 0.005, ***P < 0.001).
Habitat |
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Randomization method/data set |
VALLEY |
SLOPE |
RIDGE |
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A: bootstrapped adult relative dominance |
slope |
95% CL |
slope |
95% CL |
slope |
95% CL |
|
Data set |
Seedlings included |
||||||
Full |
i) all |
-0.11 |
-0.13 |
-0.09 |
-0.16 |
-0.15 * |
-0.15 |
ii) > 20 m from ♀ |
-0.09 |
-0.12 |
-0.05 |
-0.16 |
-0.12 |
-0.14 |
|
iii) < 30 cm tall |
-0.11 |
-0.14 |
-0.10 |
-0.13 |
-0.13 |
-0.13 |
|
iv) ii and iii |
-0.16 ** |
-0.14 |
-0.09 |
-0.13 |
-0.10 |
-0.12 |
|
B: bootstrapped seedling survival |
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Data set |
Seedlings included |
||||||
Full |
i) all |
-0.11 *** |
-0.05 |
-0.09 ** |
-0.06 |
-0.15 *** |
-0.05 |
ii) > 20 m from ♀ |
-0.09 ** |
-0.06 |
-0.05 |
-0.08 |
-0.12 *** |
-0.05 |
|
iii) < 30 cm tall |
-0.11 * |
-0.11 |
-0.10 |
-0.11 |
-0.13 *** |
-0.07 |
|
iv) ii and iii |
-0.16 *** |
-0.11 |
-0.09 * |
-0.07 |
-0.10 ** |
-0.07 |
|
C: bootstrapped seedling survival |
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Data set |
Seedlings included |
||||||
Full |
i) all |
-0.16 *** |
-0.08 |
-0.15 ** |
-0.15 |
-0.16 *** |
-0.09 |
ii) > 20 m from ♀ |
-0.13 * |
-0.12 |
-0.12 * |
-0.11 |
-0.13 * |
-0.11 |
|
iii) < 30 cm tall |
-0.13 |
-0.14 |
-0.13 |
-0.14 |
-0.13 |
-0.14 |
|
iv) ii and iii |
-0.17 * |
-0.16 |
-0.16 * |
-0.15 |
-0.16 * |
-0.15 |