Table 5 — Analysis of variance of mortality data 



Source of variation 



Degrees of freedom Chi-square 



Probability 



Intercept 

 Cutting type 

 Species 



133.00 

 7.87 

 6.70 



0.0001 

 .0487 

 .0351 



Table 6 — Influence of overstory removal and species on mortality of advance regeneration 



Species 



Degree of overstory removal 



Complete, 

 larger units 



Complete, 

 smaller units 



Partial 



Control 



Total 



Douglas-fir 

 Died after 1973 

 Live in 1985 

 Total 



Engelmann spruce 

 Died after 1973 

 Live in 1985 

 Total 



Subalpine fir 

 Died after 1973 

 Live in 1985 

 Total 



All species 



Died after 1973 

 Live in 1 985 

 Total 



36.8(7) 

 63.2(12) 

 100.0(19) 



7.7(1) 

 92.3(12) 

 100.0(13) 



10.6(5) 

 89.4(42) 

 100.0(47) 



16.5(13) 

 83.5(66) 

 100.0(79) 



18.9(7) 

 81.1(30) 

 100.0(37) 



0(0) 

 100.0(5) 

 100.0(5) 



10.6(5) 

 89.4(42) 

 100.0(47) 



13.5(12) 

 06.5(77) 

 100.0(89) 



Percent (number)- 



32.6(16) 

 67.4(33) 

 100.0(49) 



22.9(8) 

 77.1(27) 

 100.0(35) 



16.1(5) 

 83.9(26) 

 100.0(31) 



25.2(29) 

 74.8(86) 

 100.0(128) 



15.0(15) 

 85.0(85) 

 100.0(100) 



9.1(4) 

 90.9(40) 

 100.0(44) 



14.4(20) 

 85.6(119) 

 100.0(139) 



13.8(39) 

 86.2(244) 

 100.0(283) 



21.9(45) 

 78.1(160) 

 100.0(205) 



13.4(13) 

 86.6(84) 

 100.0(97) 



13.3(35) 

 86.7(229) 

 100.0(264) 



16.4(93) 

 83.6(473) 

 100.0(566) 



Table 7 — Regression 



budworm on Douglas-fir, Engelmann spruce, and subalpine fir 



Variable 



Coefficient 



T 



Probability 





Douglas-fir 







Natural log 1973 height 



8.912 



4.12 







Coefficient variation height 



.094 



1.98 



0.050 



Crown ratio 



-20.251 



-2.02 



.045 



Intercept 



13.320 



1.38 



.170 



R-square 



0.20 







Error mean square 



618.50 







F for regression (Probability) 



11.00(0) 

 Engelmann Spruce 







Natural log 1973 height 



16.138 



4.86 







Coefficient variation height 









Crown ratio 









Intercept 



11.047 



1.25 



.217 



R-square 



0.26 







Error mean square 



603.64 







F for regression (Probability) 



23.65(0) 

 Subalpine Fir 







Natural log 1973 height 



17.368 



8.35 







Coefficient variation height 



-.072 



-2.77 



0.006 



10-year radial growth 



-42.256 



-2.13 



.034 



Crown ratio 









Intercept 



30.188 



4.82 







R-square 



0.42 







Error mean square 



491.25 







F for regression (Probability) 



49.15(0) 







8 



