Ecological Archives A022-009-A2

Laura P. Leites, Andrew P. Robinson, Gerald E. Rehfeldt, John D. Marshall, and Nicholas L. Crookston. 2012. Height-growth response to climatic changes differs among populations of Douglas-fir: a novel analysis of historic data. Ecological Applications 22:154–165.

Appendix B (TABLE B1). Parameter estimates, 95% approximate confidence intervals, and correlation information for the model including minimum temperature of the coldest month as the transfer distance variable and as the climate at seed source variable.

Parameter

Parameter estimate

Confidence intervals (α = 0.95)

 

 

lower

upper

b0 (intercept)

543.65

459.51

627.78

b1 (MMIN.trds*)

4.26

-3.91

12.42

b2 (MMIN.trds2*)

-3.41

-3.94

-2.87

b3 (MMIN)

42.24

34.26

50.22

b4 (MTCM.trds*MTCM*)

-3.32

-3.99

-2.64

SD (u1, study)

47.02

 

 

SD (u2, population)

66.32

 

 

SD (u3, block)

8.88

 

 

SD(u4, planting)

19.48

 

 

SD(u6, region)

20.51

 

 

SD(u7, population linear- MMIN.trds)

6.89

 

 

SD(u8, population linear-MMIN)

6.01

 

 

SD (Є)

20.80

 

 

Cor(u2, u7)

0.95

 

 

Cor(u2, u8)

1.0

 

 

Cor(u7, u8)

0.96

 

 

Notes: Given the selection of a fixed number of the possible variables at each of the two stages of model development, not all possible models resulting from all possible variable combinations were evaluated. This may potentially result in the confidence intervals for the parameter estimates being at a lower confidence level than α = 0.05. *MMIN.trds = minimum temperature of the coldest month transfer distance in °C, MMIM = minimum annual temperature at seed source location in °C.


[Back to A022-009]