Ecological Archives M075-012-A5

Patrick J. Baker, Sarayudh Bunyavejchewin, Chadwick D. Oliver, and Peter S. Ashton. 2005. Disturbance history and historical stand dynamics of a seasonal tropical forest in western Thailand. Ecological Monographs 75:317–343.

Appendix E. Summary of age–tree size regression analyses.

Table E1. Summary of regression analyses of age–diameter relationships for selected study species from the seasonal dry evergreen forest at HKK based on the linear regression model: dbh = B0 + B1 (Age).

Species

B0

B1

R2

F

P

All

65.23

0.042

0.001

0.07

0.792 NS

Chukrasia

51.69

0.368

0.069

2.78

0.109 NS

Melia

38.25

0.005

<0.001

0.002

0.962 NS

Neolitsea

41.55

1.146

0.352

11.96

0.002 **

Toona

32.43

0.688

0.311

7.23

0.016 *

Vitex

67.66

0.337

0.020

0.17

0.694 NS

   Notes: Analyses included only those trees for which an establishment date was available, either from directly coring the pith of the tree or, in the case of near missed, by estimating the number of years to the pith using Duncan’s (1989) method. P values refer to the significance values of the ordinary least-squares regression model. * P < 0.05; ** P <0.01; NS: P >0.05.


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