Table 1a — Number of overstory trees by species that became established in each 20-year period for each dry site plot. Data are all trees from 

 which total ages were obtained (see Methods). Four individual trees established before 1400 are listed by date. P = ponderosa 

 pine; F = Douglas-fir. 



Midpoint of 





L-1 



L-2 



L-3 



B-1 B-2 



B-3 



20-year period 



P 



F 



P 



F 



P 



F 



P F P 



F P F 



1890 



5 



4 





2 







1 1 



2 5 



1870 





2 



3 



1 









4 3 



1850 



3 



1 



3 



3 







2 1 



3 1 



1830 



4 



2 



4 









2 4 



111 



1810 







2 



5 



2 



4 



2 12 



4 14 



1790 





1 





2 



5 



2 



8 18 1 



4 



1770 



1 





1 





5 



6 



3 3 



4 1 



1750 





1 







15 



6 



5 14 



3 1 



1730 



4 







3 



45 



11 



5 2 3 



4 



1710 



3 



2 





4 



24 



5 



3 4 



1 1 



1690 



2 



2 





1 



4 



2 



4 8 



2 1 2 



1670 



4 





1 



4 



1 





1 



113 



1650 



3 



1 



1 



3 



3 



1 



3 



1 3 2 



1630 



2 





2 









1 



1 



1610 



2 





2 



1 









3 



1590 







5 



2 









1 1 



1570 



1 



1 



3 



1 



1 





2 



2 3 



1550 



7 





9 



2 





- 



d 



1 



1530 



8 





4 



1 







4 



1 



1510 











1 





4 



3 1 



1490 







1 









2 



5 



14/0 















1 



3 













1 





i 

 1 





1430 

















1 



1410 





1 















Establishment 



1291 













1356 





date of 



















older regen. 



1201 























1171 













Table 1 b — Number of overstory trees by species that became established in each 20-year period for each moist site plot. P = ponderosa pine; 



F = Douglas-fir; LP 



= lodgepole pine; WL 



= western larch; GF 



= grand fir. 







Midpoint of 





F-1 









F-2 





B-4 



20-year period 



P 



F 



LP 



WL 



P 



F 



LP WL P 



F LP GF 



1890 





3 



9 









1 1 1 



7 2 



1870 





1 



1 





4 



1 



16 1 1 



2 



1850 









1 



6 



1 



20 4 10 



5 1 



1830 









1 



22 



4 



5 18 10 



6 1 



1810 











21 



1 



6 3 



2 



1790 















1 





1770 



2 



1 





2 



1 









1750 



1 

















1730 



















1710 





1 











1 





1690 





3 





1 







1 





1670 



2 













3 





1650 



3 













3 





1630 



14 













7 





1610 



59 













8 





1590 



2 







1 







5 





1570 















1 





1550 















2 





1530 











1 









1510 



1 













1 





1490 















1 





1470 











1 









1450 















2 





1430 















1 





1410 



Establishment 

 date of 

 older regen. 



6 



