Ecological Archives E088-135-A5

Simon A. Queenborough, David F. R. P. Burslem, Nancy C. Garwood, and Renato Valencia. 2007. Neighborhood and community interactions determine the spatial pattern of tropical tree seedling survival. Ecology 88:2248–2258.

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

Randomization method/data set

VALLEY

SLOPE

RIDGE

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

           

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

           

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



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